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Writer's pictureKaisern Chen

Sigma, the naughty boy

Updated: Aug 24

Sigma, much like Subaru in the automotive industry, is known for its distinctive and innovative approach to lens design. They've carved out a unique identity by pushing boundaries and embracing a bold, unconventional style. This adventurous spirit is evident in their latest offering, the Sigma 28-45mm F1.8 DG DN lens.


Sigma continues to demonstrate that they're not afraid to compete with the best, consistently offering products that defy norms and set new standards in the industry. This lens is a testament to their ingenuity, making it an attractive option for photographers seeking exceptional performance and reliability.



Image from my Sigma cameras and lenses




Sigma 28-105mm 1:2.8 DG DN Art (loaner, thanks to Sigma Thailand)


Sigma has excelled in recent years by not only offering alternatives to camera brands' original lenses but also filling gaps within lens systems, catering to photographers' aspirations. The new Sigma 28-105mm f/2.8 DG DN Art is a prime example.

Sigma 28-105 1:2.8 DG DN Art mounted on my SONY A7R V August 24, 2024

I often use my SONY FE 24-70mm f/2.8 GM II for its versatility, sometimes eliminating the need for prime lenses. It rarely disappoints, but occasionally, I wish for more reach—similar to the Leica Vario-Elmarit 24-90mm f/2.8-4 ASPH for my Leica SL system. The Sigma 28-105mm f/2.8 DG DN Art fulfills and even exceeds that desire.


The lens boasts solid build quality with a comfortable textured grip, though it lacks a premium finish—likely a deliberate choice to maintain a manageable weight. However, it excels in key areas: optical performance and tactile feedback, both at a highly professional level. On my SONY A7R V, the lens balances well and offers a comfortable size, considering its focal range. Single and continuous focus are particularly effective for portrait shoots, allowing photographers to track moving subjects easily. The lens locks onto and maintains focus quickly, consistently delivering sharp images, as demonstrated by examples taken with the Sigma on my SONY A7R V.


In the following image from my "Surfaced" series, Nina Lobzhanidze is captured with exceptional clarity using the new Sigma 28-105mm f/2.8 DG DN Art lens. The lens delivers impressive sharpness, highlighting intricate details with precision. The rendering of the image is beautifully pleasing, showcasing the lens's ability to create a striking, well-balanced composition.


Nina Lobzhanidze “SURFACED” Bangkok, Thailand August 27, 2024 Sigma 28-105/2.8 f/7.1 1/100s ISO 200 Manual

Another image of Nina Lobzhanidze with the lens gives a pleasing sharpness and the background is rendered with a nice bokeh without over-confusion which gives a good sense of location while still placing all the focus on the subject.


Nina Lobzhanidze, Bangkok, Thailand August 28, 2024 Sigma 28-105/2.8 f/4.5 1/160s ISO 200 Aperture Priority

In the following image, I asked Nina to constantly act to avoid stagnation so the image would be more lively, while taking the picture, Nina was walking and half-swimming at the pool while I was also in the pool training the camera and moves along with Nina to get the desired composition. The lens works without any hiccups and delivers frame after frame of images to allow more alternative in final editing of a short series of images.


Nina Lobzhanidze, Bangkok, Thailand August 28, 2024 Sigma 28-105/2.8 f/3.5 1/100s ISO 200 Aperture Priority

The following shot of Nina, I used the Sigma 28-105mm f/2.8 DG DN Art set at approximately 50mm to test its close-up capabilities during her stretch pose. The lens delivers impeccable geometric rendering with minimal distortion, outperforming some acclaimed 50mm primes I've used in the past. This highlights the advancements in modern optical design, showcasing the impressive performance of a constant large aperture 28-105mm zoom lens.


Nina Lobzhanidze, Bangkok, Thailand August 28, 2024 Sigma 28-105/2.8 f/3.2 1/60s ISO 200 Aperture Priority

Here is a night shot of Nina, where a compact LED light balances her with the city lights in the evening. The modern bi-color LED lights illuminate the subject, allowing photographers to see the real exposed image through the electronic viewfinder or rear screen. I aimed for the city lights to provide subtle hints of color in an otherwise near-monochrome setting, ensuring Nina's face remains the immediate focal point.


Nina Lobzhanidze, Bangkok, Thailand August 28, 2024 Sigma 28-105/2.8 f/3.5 1/80s ISO 2,500 Aperture Priority

A quick test of the new Sigma 28-105mm f/2.8 DG DN Art lens during an early evening in August showcased its impressive capabilities. At the wide 28mm end, the lens offers exceptional optical correction and vivid detail, capturing the densely packed buildings in stunning clarity even in low light. Zooming to 105mm, the lens beautifully captures the remaining colors of the setting sun, with the stabilized camera/lens system delivering a fantastic 3D rendering of the cityscape. This suggests that the lens could be an ideal one-lens solution for landscape applications when compactness and light weight are needed.


Bangkok City Scape, August 24, 2024 Image left at 28mm f/7.1 1/60s ISO 400 & the right at 105mm f/7.1 1/250 ISO 1,600 Aperture Priority

So, is the Sigma 28-105mm f/2.8 DG DN Art a replacement for my trusted SONY FE 24-70mm f/2.8 GM II? It's a tough call. Optically, the 24-70mm f/2.8 GM II is impeccable for me, and as a long-time user since the original model, it's become my most-used lens across various camera systems, with hundreds of thousands of images captured.


The new Sigma is close—so close that, on any given day, I wouldn’t mind swapping it with my 24-70mm f/2.8 GM II, unless I need that 24-28mm range. The 24-70mm is also slightly smaller and lighter, making it less intimidating for street photography or with camera-shy subjects. However, the 70-105mm range at f/2.8 is highly desirable, even dreamlike.


In reality, the Sigma 28-105mm will complement my SONY 24-70mm, offering flexibility for different shooting days. While compactness and lighter weight are always appealing, they don't outweigh the benefit of extra reach—especially in street portraiture, where a longer lens can provide more definition of the subject without compromise.


Sigma 28-105 1:2.8 DG DN Art mounted on my SONY A7R V August 24, 2024

When it comes to my Leica SL system, the decision is easier. The Sigma's constant aperture design is beneficial for video work under artificial lighting, even though I don't typically use my SL for video. It's approximately the same size but lighter than my old Vario-Elmarit-SL 24-90mm f/2.8-4 ASPH, with faster and more responsive focusing, and a longer reach that I prefer. Since I generally don't use my SL for wide shots, I'm comfortable with the 28mm wide-angle end.


Optically, the Sigma is compatible and offers better vignetting control, making it an ideal replacement for the Vario-Elmarit. While the dark grey matte finish might not appeal to those concerned with the aesthetic of their gear, for those focused solely on getting the shot, the choice is clear.



"Mirrored Perspectives: The Paradox of Self and City"


Nina Lobzhanidze stands at the center of the frame against a glass curtain wall on a high-rise rooftop garden in Bangkok. Her profile and reflection are elegantly captured, with the metropolitan skyline seamlessly merging into her mirrored image. This scene creates a mesmerizing blend of reality and illusion. Her reflection seems to gaze over the horizon, highlighting the interplay between self and city, where both Nina and her reflection take center stage.


"Mirrored Perspectives: The Paradox of Self and City" Nina Lobzhanidze, Bangkok, Thailand August 28, 2024 Sigma 28-105/2.8 f/5.6 1/60s ISO 200 Aperture Priority



Sigma 28-45mm 1:1.8 DG DN Art (loaner, thanks to Sigma Thailand)


Sigma 28-45mm F1.8 DG DN Art mounted on my SONY A7R V

This image of Nina Lobzhanidze beautifully showcases the Sigma 28-45mm F1.8 DG DN Art lens's resolving power and flare control, maintaining pleasing contrast across the frame. Nina, in her sleek black swimsuit, poses gracefully by the pool at the Marriott Surawongse Bangkok, exuding elegance and relaxation. The vibrant blue and teal water tiles create a striking backdrop, adding depth and visual intrigue.


The lens captures the scene with exceptional sharpness and accurate colors, highlighting Nina's features and harmonizing her skin tones. Despite not being compact or lightweight, the lens balanced well on my SONY A7R V, resulting in a dynamic and visually captivating image.


Nina Lobzhanidze, Marriott Surawongse Bangkok, Thailand SONY A7R V + Sigma 28-45/1.8 DG DN Art f/5 1/2500s ISO 100 Aperture Priority August 19, 2024

Nina Lobzhanidze, Marriott Surawongse Bangkok, Thailand SONY A7R V + Sigma 28-45/1.8 DG DN Art f/5 1/2000s ISO 100 Aperture Priority August 19, 2024

Nina Lobzhanidze, Marriott Surawongse Bangkok, Thailand SONY A7R V + Sigma 28-45/1.8 DG DN Art f/7.1 1/100s ISO 640 Aperture Priority August 19, 2024

Nina Lobzhanidze, Marriott Surawongse Bangkok, Thailand SONY A7R V + Sigma 28-45/1.8 DG DN Art f/7.1 1/100s ISO 640 Aperture Priority August 19, 2024


Testing the lens at the Bangkok Railway Station, Thailand


Though I usually refrain from shooting wide open, I made an exception to test this remarkable lens with Nina. Shooting at F1.8, the lens delivered outstanding detail and contrast, far exceeding expectations. Its rich depth and clarity highlight Sigma's commitment to quality and precision, even when operating at maximum aperture.


For photographers frequently working in low-light environments, this lens is an invaluable tool. Its ability to capture stunning images with sharp detail and vibrant contrast ensures that creative vision isn't compromised, regardless of lighting conditions.


Nina Lobzhanidze, at the Bangkok Railway Station, Thailand SONY A7R V + Sigma 28-45/1.8 DG DN Art f/1.8 1/30s ISO 200 Aperture Priority August 19, 2024

Nina Lobzhanidze, at the Bangkok Railway Station, Thailand SONY A7R V + Sigma 28-45/1.8 DG DN Art f/2.5 1/30s ISO 200 Aperture Priority August 19, 2024

Nina Lobzhanidze, at the Bangkok Railway Station, Thailand SONY A7R V + Sigma 28-45/1.8 DG DN Art f/2.8 1/30s ISO 100 Aperture Priority August 19, 2024

The following black-and-white image, taken at the Bangkok Railway Station, captures a moment of everyday life. Through a rain-streaked window, a janitor is seen diligently cleaning the train after its arrival at the terminal. The smudges and water droplets on the glass create a textured, artistic effect, adding depth and intrigue to the composition. The blurred silhouette of the janitor in motion contrasts with the sharp details of the window, emphasizing the hard work and routine of maintaining the bustling station.


The use of the Sigma 28-45mm F1.8 DG DN Art lens on my SONY A7R V, showcases the lens’s ability to render crisp detail and mood in challenging lighting conditions.


At the Hualumphong Station, Bangkok, Thailand SONY A7R V + Sigma 28-45/1.8 DG DN Art f/4.5 1/100s ISO 200 Aperture Priority August 19, 2024

Boy and his bike, Makkasan Community Bangkok, Thailand SONY A7R V + Sigma 28-45/1.8 DG DN Art f/4 1/100s ISO 200 Aperture Priority August 19, 2024

Sujeepon Boochote, Warehouse 30 Bangkok, Thailand SONY A7R V + Sigma 28-45/1.8 DG DN Art (at 28mm) f/4 1/60s ISO 320 Aperture Priority August 20, 2024


Sigma 15mm F1.4 DG DN Diagonal Fisheye (loaner, thanks to Sigma Thailand)


Banteay Srei Temple, Siem Reap, Cambodia February 2024 Sony A7R V + Sigma 15mm 1:1.4 DG DN DiagonalFisheye f/4 I/1,250s ISO 100 Aperture Priority

Bayon - the temple with many faces, Siem Reap, Cambodia February 2024 Sony A7R V + Sigma 15mm 1:1.4 DG DN Diagonal Fisheye f/11 1/200s ISO 100 Aperture Priority


Sigma 15mm F1.4 DG DN Diagonal Fisheye Art mounted on my SONY A7R V

Sigma 15mm F1.4 DG DN Diagonal Fisheye Art mounted on my SONY A7R V

Analyzing the Sigma 15mm F1.4 DG DN Diagonal Fisheye Art lens is a challenge for me, mostly because super-wide-angle photography isn't my forte. However, this lens is undeniably impressive. Its robust build is immediately noticeable when you pick it up.


Sigma designed this lens with a wide open aperture of f/1.4, clearly appealing to astrophotographers. The well-corrected optics and remarkable sharpness make it highly versatile, capable of adapting to various creative needs. It truly pushes photographers to explore new creative boundaries.


Although it's a large and hefty lens at 1,360g, and it dominates my SONY A7R V, its fast and quiet focusing is impressive. It delivers the signature fisheye effect with crispness and style. For those who master its use, it can become an indispensable everyday lens.


Khmer girl in the Pub Street, Siem Reap, Cambodia February 25, 2024 SONY A7R V + Sigma 15mm F1.4 DG DN Diagonal Fisheye f/4 1/60s ISO 125 Aperture Priority


The little daughter of a toy seller in the Pub Street, Siem Reap, Cambodia February 25, 2024 SONY A7R V + Sigma 15mm F1.4 DG DN Diagonal Fisheye f/4 1/60s ISO 160 Aperture Priority


Francois, on the weight-station in the gym in sunsetting time, Bangkok, Thailand February 24, 2024 SONY A7R IV + Sigma 15mm F1.4 DG DN Diagonal Fisheye f/6.3 1/30s ISO 1,250 Aperture Priority



The Merrill Cameras


The Sigma DP1 Merrill was my introduction to Sigma cameras, and it quickly became a favorite due to its simplicity and the extraordinary quality delivered by its Foveon sensor. This camera effortlessly captured images with rich detail and vibrant colors, making it a standout choice for anyone passionate about photography.


What I found particularly appealing about the DP1 Merrill was its straightforward, user-friendly design. This made it incredibly intuitive to use, allowing me to focus on composing my shots rather than getting bogged down by complex settings—a true testament to Sigma's commitment to functionality and performance.


The camera became my constant companion, much like my old Contax T3, known for its reliability and excellent image quality. It was easy to carry and always ready for action, tucked neatly inside my bag, just waiting to capture those spontaneous moments of inspiration. Whether I was exploring cityscapes or wandering through natural landscapes, the DP1 Merrill proved to be versatile and dependable.


Overall, the Sigma DP1 Merrill left a lasting impression on me, merging the past values of traditional photography with modern digital innovation. It was more than just a camera; it was an artistic tool that inspired creativity and produced exceptional results.


Nanfangao, Yilan, Taiwan October 2012 Sigma DP1 Merrill

Nanfangao, Yilan, Taiwan October 2012 Sigma DP1 Merrill

Time Werner Center, Columbus Circle, Manhattan, New York Sigma DP-1 Merrill

From the balcony of Madison Green, Manhattan, New York, New York Sigma DP-1 Merrill

The Foveon sensor in the Sigma DP1 Merrill is renowned for its ability to produce exceptionally pleasing tones and detailed images, making it a fantastic tool for black-and-white photography. Its performance closely rivals that of dedicated monochrome cameras like the Leica M Monochrom. This sensor captures incredible depth and texture, rendering images with a richness that is often difficult to achieve with traditional sensors.


One of the standout features of the Foveon sensor is its ability to retain the full spectrum of colors, which can be particularly beneficial during post-processing monochrome conversions. This flexibility allows photographers to apply color filters digitally, enhancing their creative control and tailoring the final black-and-white artwork to their exact vision.


For photographers who are passionate about creating striking black-and-white images, the DP1 Merrill offers a unique blend of high resolution and tonal accuracy. Its ability to capture nuanced shades and intricate details adds a layer of sophistication to the images, elevating them beyond standard monochrome photography.


In essence, the Sigma DP1 Merrill with its Foveon sensor is more than just a camera; it is a bridge between color and monochrome photography, providing artists with a robust platform to explore their creative boundaries and produce stunning black-and-white art.


Ko Sichi 柯錫杰 Taipei, Taiwan October 7, 2012 Sigma DP-1 Merrill

The Sigma DP-2 Merrill during the 2012 - 2013 was my camera for street portraits and often I have all the Sigma Merrill with me - the DP-1 Merrill, the DP-2 Merrill and the DP-3 Merrill, that cover the most often use focal length.


Buffalo trader, Chiang Mai, Thailand October 2012 Sigma DP-2 Merrill

Purple Umbrella, Madison Square Park, Manhattan, New York Sigma DP-3 Merrill

The DP-3 Merrill was often use as a candid camera inside my studio but also sometimes use to capture some images next to my primary camera of the work.


Paulina Marozsán at SOTA 96 Bangkok

Paulina Marozsán at SOTA 96 Bangkok, Thailand Sigma DP-3 Merrill


The Sigma SD-1 was a capable camera of its day, easily comparable to the best cameras of its time. I often use the SD-1 side by side with my Phase One backs on Hasselblad H cameras in my studio.


Marta Vorobiova at SOTA 96

Marta Vorobiova, SOTA 96 Bangkok, Thailand Sigma SD1 Merrill + Sigma 50/1.4 EX DG HSM


The best Foveon Sigma - sd Quattro H with the larger APS-H size sensor and 51MP-equivalent resolution



Izem Yilmaz, Bangkok, Thailand

Izem Yilmaz, Bangkok, Thailand Sigma SD Quattro H + 85/1.4 DG HSM Art


Sigma fp L Mount camera mounted with 45mm F2.8 DG DN Contemporary


The fp is a proprietary camera for video production with good capability for stills. It is a regular 24MP Bayer sensor camera instead of Sigma's signature Foveon sensor, however, it is a compact and capable camera perfectly fit for still photography.


Sabrina Baycroft "Surfaced" Samut Prakan, Thailand Sigma fp + 45/2.8 DG DN Contemporary



The refresh of the 85mm fast prime


The recent introduction of the 85mm F1.4 DG DN Art for SONY E-mount and L-mount cameras is one of the example of Sigma tradition - to challenge the best! It carries a rich list of optical specifications, very well-made and assembled, a bold claim to rival or even surpass the highly acclaimed SONY 85mm F1.4 G Master in the optical performance, which I also owned and shoot since 2016, and charge a lot less. All the nice descriptions of the new Sigma 85mm DG DN Art lens are available from Sigma's official website and numerous lens review/marketing websites that I do not need to repeat or endorse! I intend to find out by myself by taking pictures with it.


SONY 85mm F/1.4 GM & Sigma 85mm F1.4 DG DN Art on SONY A7R IV

SONY 85mm F/1.4 GM & Sigma 85mm F1.4 DG DN Art on SONY A7R IV

I am a photographer, and this is a personal blog with the images I took, sometimes with some personal and subjective opinions on the tools I use. I love taking pictures, and I'm not too fond of lens test, so I will go directly to the conclusion on questions that ordinary users may have, after shot a few hundred pictures with the Sigma 85mm DG DN Art with my SONY A7R IV ;

  1. Lens optical performance - excellent, will comment more on the pictures in this blog. 

  2. Lens AF and MF performance - both are excellent. AF is very snappy when using SONY A7RIV, which is the camera I use to shoot this series of pictures. The Sigma 85mm DG DN Art is AF faster than the SONY 85/1.4 G Master. The 85 GM was a bit slow with SONY A7RII cameras but improved very much with A7RIII, and even faster with A7RIV, especially shooting eye-focus in continuous mode for portraiture; it is more than acceptable. You don't complain a lens can AF faster, and the Sigma has the edge in this regard.   

  3. Lens design - it is like a SONY G Master redesign in Sigma design language since their new Art series lenses. It has all the G Master's feature elements, focus mode, physical aperture ring, de-click switch, and programmable button. The lens looks smart. The lens is said to use more expensive optical elements to keep its size down, similar to many Leica M lenses' claims.  

  4. Size and weight - If you are a professional photographer, then you need to figure out how to use a camera and lens no matter how big and heavy for no concern how long. However, lighter and more compact is still preferred, provided no compromise to the performance, as the new Sigma. Some photographers may not prefer lighter and smaller, and they will make their pick. My SONY G master is a tab bigger but not uncomfortable to hold and is 190g heavier (820g vs. 630g), it is not a deciding factor for me, or to most photographers, I suppose. It could be a more significant factor for traveling and camera bag size; each can decide his own.  


Liza Kaylee & Maria Klepikova at the Fotoclub Bangkok

August 13, 2020


This series of images stook with the Sigma 85mm F1.4 DG DN Art on SONY A7R IV with beautiful Liza Kaylee and Maria Klepikova at Fotoclub Bangkok. Special thanks to Jate Pokmangmee to allow me to use his facility fitted in the Any Warhol inspired style that I use for the shoot. 



Maria Klepikova "Intergalactic Travel", Fotoclub Bangkok, Thailand August 13, 2020 SONY A7R IV + Sigma 85/1.4 DG DN Art f/5.6 1/100s ISO 100 Ring Flash

A reflective surface is always a challenge to shoot, especially involving using artificial light. The camera sensor's dynamic range depends on the lens in front of it for the broadest range of information it is designed to deliver, and the Sigma 85/1.4 DG DN Art is not disappointing. Organic gradation, even on the reflective highlight area with the smallest detail and texture kept.



Liza Kaylee and Maria Klepikova, Fotoclub Bangkok, Thailand August 13, 2020 SONY A7R IV + Sigma 85/1.4 DG DN Art f/5.6 1/100s ISO 100 200W LED Lamp + Ring Flash

The Sigma lens defines the skin tone and highlight texture of the foil interior exceptionally well - suggesting the new Sigma lens of good contrast and tonal transition. I imagine the lens will do fantastic jobs outdoors, judged by how it reacts to this shooting condition. I would find out later.



"Space in Space" - Maria Klepikova, Fotoclub Bangkok, Thailand August 13, 2020 SONY A7R IV + Sigma 85/1.4 DG DN Art f/5.6 1/100s ISO 100 200W LED Lamp + Ring Flash




Both are exceptionally well-made lenses; the SONY 85/1.4 GM is made in Thailand to SONY standards, and the Sigma 85/1.4 DN DG Art is made in Japan. It is not a suggestion or hint of anything to craftsmanship or optical quality may differ by its manufacturing country, as long as each's original specification is met. The metallic rear lens collar on the Sigma is similar to the other Art series lenses and is easy to pick up fingerprints. It has nothing to do with the lens performance, it just looked a bit dirty after a hot day of use, and I prefer Sigma to apply different finishes to get rid of such annoyance eventually. This is a purely subjective opinion and not a reason for anyone not to buying it as it is easy to wipe clean.


Back to the shoot! Liza has such a "nice girl" look that I am sorry to have to ask her to act "сука" (bitch in Russian) each time I shoot her, so I can get a little more of edginess out of her.


Liza Kaylee, Fotoclub Bangkok, Thailand August 13, 2020 SONY A7R IV + Sigma 85/1.4 DG DN Art f/5.6 1/100s ISO 100 200W LED Lamp + Ring Flash

Liza Kaylee "Intergalactic Travel", Fotoclub Bangkok, Thailand August 13, 2020 SONY A7R IV + Sigma 85/1.4 DG DN Art f/8 1/100s ISO 160 Ring Flash

There are some examples of the shots I captured with the SONY 85/1.4 G Master here! It is not a direct comparison because I don't test the lens that way unless a paid assignment with good commercial incentives. Honestly, I would rather just do real photography. However, everyone who reviews the image can make up their mind and there will be many lens reviews available soon anyway.


The SONY 85/1.4 G Master is a great lens, and the Sigma 85/1.4 DG DN Art is also a great lens. If budget is a factor, go with Sigma; if the money of this level is no object, go with whatever, or buy both.


Maria Klepikova, Fotoclub Bangkok, Thailand August 13, 2020 SONY A7R IV + Sigma 85/1.4 DG DN Art f/6.3 1/100s ISO 100 200W LED Lamp + RIng Flash

"The Messier 31 Dream"

Liza Kaylee "The Messier 31 Dream", Fotoclub Bangkok, Thailand August 13, 2020 SONY A7R IV + Sigma DG DN Art f/7.1 1/100s ISO 100 200W LED Lamp + Ring Flash

Maria Klepikova "Stretching Space", Fotoclub Bangkok, Thailand August 13, 2020 SONY A7R IV + Sigma 85/1.4 DG DN Art f/5.6 1/100s ISO 100 200W LED Lamp + Ring Flash

Lovely Maria selfie with the 1954 Leica IIIf RD, a camera two generations older than Maria, is one of the oldest Leica in my collection. The original Leica IIIf introduced in time for Christmas 1950 matches the red color of the bodysuit nicely. The old camera pairs with Maria and the Andy Warhol space theme very well and thanks Maria's beautiful pose to connect all the elements that work well as a picture. More on my blog Behind and in front of my camera.


Maria Klepikova "Space-Time Travel" Fotoclub Bangkok, Thailand August 13, 2020 SONY A7R IV + Sigma 85/1.4 DG DN Art f/5.6 1/100s ISO 100 Ring Flash



More photos from Sigma 85/1.4 DN DG Art coming...




Sigma 85/1.4 DG DN Art & SONY 85/1.4 G Master, with lens shade attached

The size of the lens shall factor together with the camera for practical comparison and, if necessary, including the lens shade for those who use it regularly. The Sigma is visibly more compact than the SONY G Master, but the difference drew much closer with lens shade attached.


Similarly, the handling of the lens shall be judged on the camera and lens as a unit. I have been using cameras for more than 30 years, and I like all the cameras I used because handling is something of getting used to, and it is a photographer's job to get familiar with the tools he uses, any tool. However, it is fair to say the combination of this Sigma 85/1.4 DG DN Art on SONY A7R IV fits my hand very well, and I suppose every photographer shall feel comfortable shooting with this combination all day long if he loves photography enough.

Sigma has delivered what it claimed for the 85/1.4 DG DN Art. The lens works flawlessly, sharpness is right there with the best, ie. the G Master, and I did not miss any focus from a couple of hundred of images from the shoot. It is a dependable tool!


Sigma has a new design for the lens shade release, which deserves some applauses. It is a careful design detail that one may question why it takes so long for any lens maker to figure it out? The release embedded as part of the lens shade design, so it won't get knock-off easily while allowing very fast disengagement.


Sigma art lens as the more compact and lighter one also feels more metallic. The Sony G Master is a magnesium lens chassis hybrid with an engineering plastic shell. As an industrial designer, I have no preference for a lens that feels metallic or not because engineering plastic is very forgiving and durable and does not conduct too much cold if to use it in Russian winter, which I often do. I like both.



Liza Kaylee and Maria Klepikova, Fotoclub Bangkok, Thailand August 13, 2020 SONY A7R IV + Sigma 85/1.4 DG DN Art f/4.5 1/100s ISO 100 200W LED Lamp + Ring Flash

December 1


Sigma introduced three lenses to join the first Full frame Contemporary lens -45mm F2.8 DG DN launched with the cine-oriented Sigma fp -back in July 2019.


Sabrina Baycroft with Sigma fp + 45mm F2.8 DG DN Contemporary, November 2019

The 24mm F3.5 DG DN is, IMHO, the most interesting one among the three lenses because it can close focus to 11cm with a max magnification of 1:2 (0.5X), making it a handy macro lens.


Sigma 24mm F3.5 DG DN Contemporary

The other two, the 35mm F2 and 65mm F2 presented quite interestingly in Sigma's introduction material in metallic appearance - for the statement of the Contemporary lenses being all-metal construction. Still, it won't be such a bad idea if such a chrome-metallic finish is available!


Sigma 35mm F2 DG DN & 65mm F2 DG DN Contemporary

The Sigma Contemporary lens design appeared taking some cues from the Zeiss Loxia and ZM lenses to blend with the Sigma recipe and finished a stylishly compact lens that provides snappy autofocus and excellent optical performance on my SONY A7R IV.


Sigma 65mm DG DN Contemporary

The 65mm F2 DG DN gives a slightly more natural perspective for close range portraiture, as the one I shot with this man in front of a park.



Man alone, Bangkok, Thailand December 9, 2020 SONY A7R IV _ Sigma 65mm F2 DG DN Contemporary f/4.5 1/60s ISO 250 Aperture Priority


Cycle of life


"Death is the start of a beginning, life is the start of the end, and the cycle continues forever."

~ Tim I. Gurung, Afterlife


cycle of life #20-258, Bangkok, Thailand December 9, 2020 SONY A7R IV + 65mm F2 DG DN Contemporary f/7.1 1/60s ISO 500 Aperture Priority

cycle of life #20-310, Bangkok, Thailand December 9, 2020 SONY A7R IV + 65mm F2 DG DN Contemporary f/6 1/30s ISO 800 Aperture Priority

6-month old Grace and her mom

Grace and her mother, Bangkok, Thailand December 9, 2020 SONY A7R IV + 65mm F2 DG DN Contemporary f/4 1/60s ISO 400 Aperture Priority



2021



August


Quiet time for photography, many cameras left rest in the storage. Time for making some in-house project.



August 12 The Sigma sd Quattro H - the closest alternative to Leica Monochrom cameras?


The Foveon Quattro sensor with a vertically stacked 2X2 grid of Blue-Green-Red silicon wafer depicts the colors it detects at each absorption level for each output pixel. The resulting image with Sigma proprietary process algorithms to construct a single RGB color from all the data sensed by the photodiode stack would appear with higher clarity and sharpness than a typical Bayer pattern sensor. And in most situations, more pleasing and natural color reproduction.


The Quattro version may be a little less sharp than the earlier Merrill sensor. However, it gains better sensitivity and still performs significantly better than the Bayer sensor for color fidelity and pattern separation as no demosaicing is required.

Sigma sd Quattro H + 85/1.4 DG HSM Art next to Leica M10 Monochrom + Apo-Summicron-M 90/2 ASPH

The Sigma Foveon camera is the closest alternative to Leica Monochrom cameras and, in many circumstances, more flexible than true Monochrom cameras. The Leica Monochrom cameras I use since the original Monochrom, Typ 246, and the current M10 Monochrom all suffered nasty highlight responses, especially with the M10M. It is usually not a huge problem to deal with as the exposure can key on avoiding blown highlight and rely on shadow recovery when developing the DNG files, not so easy with JPEG directly from the camera.

The Foveon sensor for managing monochromic capture allows more latitude in dealing with nasty highlights as the blue filer is stacked on top of the green and green over red, resulting in a very smooth tonal transition and more flexible JPEG output directly from the camera. One clear advantage of Sigma Foveon camera over the true monochrom camera is the color filter can be applied post-capture when developing the X3F file (now also available with X3F Plug-in for Photoshop), making the Sigma Foveon camera a wonderful, if not better, than a Leica M Monochrom camera. And it produces beautiful color images.


However, the limitation of a Leica Monochrom camera is also its strength as exposure control requires more thought and field experience, and using an optical filter for contrast manipulation is a part of creating art that is the charm of authentic monochrom photography.

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