Sony Forum (Page 3)

DavidBM

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p.3 #1Sony 35 GM vs Sigma 35 f2 DG DN

PhilG21 wrote:

lifeandmylens wrote

I have the 35 GM for about a week until my real one comes in April.

Here’s a size comparison:

https://photos.smugmug.com/photos/i-S8JNtRZ/0/62453a9a/X5/i-S8JNtRZ-X5.jpg

https://photos.smugmug.com/photos/i-QT7M3mV/0/f6ecdfb4/X5/i-QT7M3mV-X5.jpg

Here are a few quick 5 min tests I did.

Dumb question : how do you export LR comparisons windows ? And how do you previously add metadata below the "select" and "candidate" titles ?

I just made a few comparison shots with the 35 GM and the Sigma 1.2, thought you could be interested ;-)

Screenshots, the selective kind!

Feb 22, 2021 at 01:10 PM

nhsonyshooter

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p.3 #2Sony 35 GM vs Sigma 35 f2 DG DN

Hodie wrote:
Thanks for the comparison and congrats on the baby to come! I have two young kids (6 years and 10 months) and it’s true what they say...everything

It goes by fast. Everyone says it, but when they are young you don't notice as much. Then one day you wake up and they are 6 inches taller than you with deeper voices and your like "what the @#$%"

Feb 22, 2021 at 01:15 PM

Fred Miranda

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p.3 #3Sony 35 GM vs Sigma 35 f2 DG DN

The GM is slightly narrower in FOV and that impacts the amount of "blur" when comparing both lenses at same distance and aperture. So, from this comparison, it's expected to see a bit more blur from the 35/1.4 GM @f/2 around the center area.

However, away from center (off-axis), the blur difference is even more pronounced since the GM's rendering is more homogenous (smooth across the frame) while images from the Sigma wide open tend to sharpen up towards the corners at mid-distance. (Common with 35mm primes)

Feb 22, 2021 at 01:16 PM

tbpeur01

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p.3 #4Sony 35 GM vs Sigma 35 f2 DG DN

Teo Rey wrote:

tbpeur01 wrote

I really, really wanted to keep the Sigma - it more than holds its own against the GM here. I just wish its eye-af on older bodies was a little better. No other complaints about that little gem.

Which body and settings were you using? What kind of lighting situations did you have issues in?

I used continuous af and the wide area. I was left unsatisfied in two scenarios 1) tracking my son playing outside on a bright day in the snow where he was largely stationary and 2) tracking my daughter inside in average morning light while she was stationary on the couch. In both situations I was left frustrated because I had to be both closer than i’m used to for the eye-af to work, and it seemed to really need direct eye contact vs. locking on when slightly looking away.

Let me be clear - I could have made due with it and still enjoyed it fine, but I feared missing shots in critical moments where I would be forced to hit the shutter without having a lock at large apertures. In the few days I tested it I have plenty where eye af worked, but knowing alternatives will work better was enough for me to return it. My points of reference are the Sony 24-105, 24 GM, 35 1.8, 50/1.4 ZA, and 35/1.4 ZA - they all perform better in my experience. That aside, the lens is so fun and performs so well i’ve contemplated a body upgrade vs a lens upgrade

Feb 22, 2021 at 01:17 PM

keepcoding

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p.3 #5Sony 35 GM vs Sigma 35 f2 DG DN

Mystik wrote:

scalanc2 wrote

Mystik wrote

_manny_ wrote

Thanks for uploading these.

It looks like the sigma has a wider focal length, which might also contribute to the GM’s smoother bokeh along with sigma having gone for a more contrasty look.

Did you use a tripod though as maybe the apparently slightly different focal length could just be where one stands.

The Sigma 35i is definitely wider than 35mm. I encountered the difference in FOV, DOF, and bokeh when testing it against the sigma 35 1.2 and the de 35 1.8. of course if you step closer while shooting the 35i to keep a similar subject framing, you'll get a bit more blur.

Can you post sample samples comparing Sigma 1.2 to 2.0?

Sigma 35 1.2

https://live.staticflickr.com/65535/50969760531_40bf2859b7_h.jpg 35 1.2 @ f2 by Carlo Alcala, on Flickr

Sigma 35 F2

https://live.staticflickr.com/65535/50969867102_4e9e9c6d29_h.jpg 35 f2 @f2 by Carlo Alcala, on Flickr

not the same exposure: iso160 vs iso200, which suggests the i35 is actually darker than F2 (maybe T2.4 or so).

Feb 22, 2021 at 03:05 PM

Mystik

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p.3 #6Sony 35 GM vs Sigma 35 f2 DG DN

keepcoding wrote:

Mystik wrote

scalanc2 wrote

Mystik wrote

_manny_ wrote

Thanks for uploading these.

It looks like the sigma has a wider focal length, which might also contribute to the GM’s smoother bokeh along with sigma having gone for a more contrasty look.

Did you use a tripod though as maybe the apparently slightly different focal length could just be where one stands.

The Sigma 35i is definitely wider than 35mm. I encountered the difference in FOV, DOF, and bokeh when testing it against the sigma 35 1.2 and the de 35 1.8. of course if you step closer while shooting the 35i to keep a similar subject framing, you'll get a bit more blur.

Can you post sample samples comparing Sigma 1.2 to 2.0?

Sigma 35 1.2

https://live.staticflickr.com/65535/50969760531_40bf2859b7_h.jpg 35 1.2 @ f2 by Carlo Alcala, on Flickr

Sigma 35 F2

https://live.staticflickr.com/65535/50969867102_4e9e9c6d29_h.jpg 35 f2 @f2 by Carlo Alcala, on Flickr

not the same exposure: iso160 vs iso200, which suggests the i35 is actually darker than F2 (maybe T2.4 or so).

Could be right but it was early morning and sun through the windows pretty quickly. Lighting wasn't really consistent.

Edited on Feb 22, 2021 at 03:44 PM · View previous versions

Feb 22, 2021 at 03:33 PM

Teo Rey

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p.3 #7Sony 35 GM vs Sigma 35 f2 DG DN

tbpeur01 wrote:

Teo Rey wrote

tbpeur01 wrote

I really, really wanted to keep the Sigma - it more than holds its own against the GM here. I just wish its eye-af on older bodies was a little better. No other complaints about that little gem.

Which body and settings were you using? What kind of lighting situations did you have issues in?

I used continuous af and the wide area. I was left unsatisfied in two scenarios 1) tracking my son playing outside on a bright day in the snow where he was largely stationary and 2) tracking my daughter inside in average morning light while she was stationary on the couch. In both situations I was left frustrated because I had to be both closer than i’m used to for the eye-af to work, and it seemed to really need direct eye contact vs. locking on when slightly looking away.

Let me be clear - I could have made due with it...Show more →

That's helpful information! What camera body were you shooting with?

Feb 22, 2021 at 03:43 PM

tsdevine

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p.3 #8Sony 35 GM vs Sigma 35 f2 DG DN

If both lenses are flat field (big assumption), is the same property that causes cat's eye (optical vignetting) also apt to cause the same lenses to sharpen up in the corners more, as you describe? In other words can you predict the apparent sharpening of corners by looking at how much optical vignetting is exhibited by a lens? Is there any correlation, and if so, are there other factors that can make it better or worse?

For example, I think my CV 65 sharpens up in the corners at wider apertures compared to my Sigma 65. I also see more optical vignetting in the CV compared to the Sigma....is that just pure coincidence?

Fred Miranda wrote:
The GM is slightly narrower in FOV and that impacts the amount of "blur" when comparing both lenses at same distance and aperture. So, from this comparison, it's expected to see a bit more blur from the 35/1.4 GM @f/2 around the center area.

However, away from center (off-axis), the blur difference is even more pronounced since the GM's rendering is more homogenous (smooth across the frame) while images from the Sigma wide open tend to sharpen up towards the corners at mid-distance. (Common with 35mm primes)

Feb 22, 2021 at 03:56 PM

gordec

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p.3 #9Sony 35 GM vs Sigma 35 f2 DG DN

I'd be more interested in seeing a Sigma 35/2 vs Sony 35/1.8 comparison. From the pictures so far, I think the Sigma is a better overall lens. I think prospective buyers would be looking at these 2 instead of the 35 GM. If you know you want the GM, you are not thinking about the Sigma anyways.

Feb 22, 2021 at 04:20 PM

PhilG21

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p.3 #10Sony 35 GM vs Sigma 35 f2 DG DN

Just a little digression that might interest some of you, here are a few comparison shots between the 35GM and the Sigma 1.2 (unprocessed images).

As said in another thread, I’m not a reviewer; but I hope this can help. I only had a cheap tripod with me today, and I was in a hurry… so this is mostly about rendering, balance between bokeh and sharpness. No proper corner comparisons, sorry for that. And framing doesn’t perfectly match (side note: that being said, I’ve the feeling the Sigma’s FOV is narrower than the GM’s).

35 GM @ f/1.4

https://i.goopics.net/RyoGm.jpg

35 SIGMA 1.2 @ f/1.4

https://i.goopics.net/EXaJa.jpg

35 GM @ f/2

https://i.goopics.net/7gk3l.jpg

35 SIGMA 1.2 @ f/2

https://i.goopics.net/k8WKo.jpg

35 GM @ f/2,8

https://i.goopics.net/v7bw3.jpg

35 SIGMA 1.2 @ f/2,8

https://i.goopics.net/dw7p3.jpg

Sharpness comparisons:

https://i.goopics.net/2xpGR.png

https://i.goopics.net/O05N2.png

https://i.goopics.net/0O2nO.png

Bokeh comparisons:

https://i.goopics.net/ZL2Vq.png

https://i.goopics.net/YAokd.png

https://i.goopics.net/J4VWy.png

https://i.goopics.net/py3xv.png

Other tests need to be done by people more skilled than me, but to me the GM looks a bit sharper than the Sigma, especially wide open at f/1.4, at least in the center of the frame. On the other hand the Sigma’s bokeh looks slightly smoother between f/1.4 and f/2. Color tones seem also to be a bit warmer. But honestly, to my eyes, these differences are subtle and appears mostly at wide apertures… Overall both lenses offer a beautiful balance between sharpness and out of focus rendering. The GM may be a little bit more precise and contrasty (and somehow a bit more realistic, while avoiding to be neutral or « clinical »; in another thread I mentioned a kind of 3D effect and I stand on that). The Sigma seems to offer a slightly smoother rendering, a gentler style that might suit better to certain types of portraits (I guess that’s where it becomes subjective, it really depends what kind of portrait you have in mind...).

Edited on Feb 22, 2021 at 06:51 PM · View previous versions

Feb 22, 2021 at 04:20 PM

PhilG21

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p.3 #11Sony 35 GM vs Sigma 35 f2 DG DN

Sorry, I just don't get it, my pictures won't get resized, no matter how I'm doing this... I'm a noob when it comes to editing/exporting/posting... and my english sucks... I just shouldn't post anything !!!

Seriously, I'll try to edit this one, but I can't promise you anything. In the mean time you should open the images in new windows, that's the only way.

Feb 22, 2021 at 04:26 PM

Alex W

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p.3 #12Sony 35 GM vs Sigma 35 f2 DG DN

Wow the sharpness of the GM over the Sigma 1.2 is quite noticeable. Epecially where it counts. Glad I held off on pulling the trigger of the Sigma. Both awesome lenses though. I think I prefer the colors of the GM too but its close.

Feb 22, 2021 at 04:29 PM

Chris Crevasse

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p.3 #13Sony 35 GM vs Sigma 35 f2 DG DN

Mystik wrote:
Both were shot at F2 so the difference you are seeing is a matter of the wider FOV shooting from the same position. Wider FOV, means narrower DOF from the same shooting distance. You can of course make up the difference by stepping closer and getting an equivalent subject framing....by shooting from a closer distance, you get higher degree of blur.

This applies to the samples provided by the OP as well.

Edit: OP congrats on the baby!

Don't you mean wider field of view means wider DOF from the same shooting position? That is why wide angle lenses, at the same subject distance and aperture, have greater DOF than longer lenses.

Feb 22, 2021 at 04:30 PM

Fred Miranda

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p.3 #14Sony 35 GM vs Sigma 35 f2 DG DN

PhilG21 wrote:
Sorry, I just don't get it, my pictures won't get resized, no matter how I'm doing this... I'm a noob when it comes to editing/exporting/posting... and my english sucks... I just shouldn't post anything !!!

Seriously, I'll try to edit this one, but I can't promise you anything. In the mean time you should open the images in new windows, that's the only way.

If you remove the "frame" tag around your image(s), they will resize with the browser window.

Feb 22, 2021 at 04:32 PM

DavidBM

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p.3 #15Sony 35 GM vs Sigma 35 f2 DG DN

gordec wrote:
I'd be more interested in seeing a Sigma 35/2 vs Sony 35/1.8 comparison. From the pictures so far, I think the Sigma is a better overall lens. I think prospective buyers would be looking at these 2 instead of the 35 GM. If you know you want the GM, you are not thinking about the Sigma anyways.

True of some people.
But I know people who are thinking like this: I’d prefer the small size of the Sigma 2/35 and I’m happy with f2. But the GM seems to render even more smoothly at f2 and f2.8. Is the improvement large enough that it’s worth the extra size and weight, if I really don’t need f 1.4?

For them GM versus Sigma 2/35 are very salient.

Feb 22, 2021 at 04:39 PM

Fred Miranda

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p.3 #16Sony 35 GM vs Sigma 35 f2 DG DN

tsdevine wrote:
If both lenses are flat field (big assumption), is the same property that causes cat's eye (optical vignetting) also apt to cause the same lenses to sharpen up in the corners more, as you describe? In other words can you predict the apparent sharpening of corners by looking at how much optical vignetting is exhibited by a lens? Is there any correlation, and if so, are there other factors that can make it better or worse?

For example, I think my CV 65 sharpens up in the corners at wider apertures compared to my Sigma 65. I also see more optical...Show more →

Fred Miranda wrote

The GM is slightly narrower in FOV and that impacts the amount of "blur" when comparing both lenses at same distance and aperture. So, from this comparison, it's expected to see a bit more blur from the 35/1.4 GM @f/2 around the center area.

However, away from center (off-axis), the blur difference is even more pronounced since the GM's rendering is more homogenous (smooth across the frame) while images from the Sigma wide open tend to sharpen up towards the corners at mid-distance. (Common with 35mm primes)

At infinity, the Sigma 35/2 DG DN is indeed flat-field but at closer distance (2-5m), there is rearward FC which may cause the further away OOF corners to be "more in focus" compared to the center area.

I believe that optical vignetting mainly affects the shape of the specular highlights but also causes DOF changes.

Feb 22, 2021 at 06:01 PM

Dave Sanders

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p.3 #17Sony 35 GM vs Sigma 35 f2 DG DN

The extra-sized pictures helped... For bokeh I scrolled over and just went down and picked favourites without any idea which lens was which. To my eyes, the Sigma is the best in terms of OOF rendering. All three are, in all honestly, great. I wouldn't be upset with any of them...well, unless you told me I had to carry the Sigma and the sacrifice I had to make was the 1/2 litre of beer I usually carry...that might upset me

Feb 22, 2021 at 06:08 PM

tsdevine

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p.3 #18Sony 35 GM vs Sigma 35 f2 DG DN

Forgetting the Sigma's field curvature, talking lenses in general, it would seem optical vignetting in the corners is a restriction of the projected image on the sensor, not completely different than when you partially close aperture blades. So I find it interesting that one increases depth of field, and the other doesn't.

I have so much to learn about optics....thanks Fred.

Fred Miranda wrote:

tsdevine wrote

If both lenses are flat field (big assumption), is the same property that causes cat's eye (optical vignetting) also apt to cause the same lenses to sharpen up in the corners more, as you describe? In other words can you predict the apparent sharpening of corners by looking at how much optical vignetting is exhibited by a lens? Is there any correlation, and if so, are there other factors that can make it better or worse?

For example, I think my CV 65 sharpens up in the corners at wider apertures compared to my Sigma 65. I also see more optical vignetting in the CV compared to the Sigma....is that just pure coincidence?

Fred Miranda wrote

The GM is slightly narrower in FOV and that impacts the amount of "blur" when comparing both lenses at same distance and aperture. So, from this comparison, it's expected to see a bit more blur from the 35/1.4 GM @f/2 around the center area.

However, away from center (off-axis), the blur difference is even more pronounced since the GM's rendering is more homogenous (smooth across the frame) while images from the Sigma wide open tend to sharpen up towards the corners at mid-distance. (Common with 35mm primes)

At infinity, the Sigma 35/2 DG DN is indeed flat-field but at closer distance (2-5m), there is rearward FC which may cause the further away OOF corners to be "more in focus" compared to the center area.

I believe that optical vignetting mainly affects the shape of the specular highlights but also causes DOF changes.

Feb 22, 2021 at 06:14 PM

scalanc2

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p.3 #19Sony 35 GM vs Sigma 35 f2 DG DN

Dave Sanders wrote:
The extra-sized pictures helped... For bokeh I scrolled over and just went down and picked favourites without any idea which lens was which. To my eyes, the Sigma is the best in terms of OOF rendering. All three are, in all honestly, great. I wouldn't be upset with any of them...well, unless you told me I had to carry the Sigma and the sacrifice I had to make was the 1/2 litre of beer I usually carry...that might upset me

All three?

Feb 22, 2021 at 06:16 PM

ReleaseDrive

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p.3 #20Sony 35 GM vs Sigma 35 f2 DG DN

Wow. That GM's OOF rendering looks on point! That is quite nice. Hope to see it compared to the Voig 35mm 1.2. Really though, combined with the sharpness....that is impressive.

Feb 22, 2021 at 06:23 PM

Archive 2021Sony 35 GM vs Sigma 35 f2 DG DN