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Sony Lens Question

Wilfredo
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Wilfredo Newbie

Wilfredo

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I'm a Canon DSLR, and Leica MM photographer. I'm considering unloading my Canon gear for Sony. Are the Sony AF lenses for a Sony A7s comparable to Canon L lenses in terms of IQ?

 

Is the rumored A9 something that can use Leica M mount lenses with an adaptor?

 

Please excuse my lack of Sony knowledge but that's why I'm here, to learn from those of you who know the system.

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eyeseeyou2 Rookie

eyeseeyou2

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Well, Canon has many fast lenses over Sony.

 

Fast lenses are not as sharp as slow lenses.

 

But many are getting the A7s & A7 II and using lenses from Carl Zeiss (Hasselblad 500), Rolleiflex (6008), Leica/Nikon/Samyang.

 

You would need the adapter to using Sony A-Mount (Zeiss lenses) to get great IQ and fast lenses.

Or use manual lenses and all Sony has ATG peaking (Focus Peaking)

 

SZ (Sony AF Zeiss) has 16-35/2.8

SZ has 24-70/2.8

SZ has 85/1.4

SZ has 135/1.8

SG has 70-200/2.8G II (has Zeiss Optics). This cost $1,000.00 more than C/N's

 

ATG's suggests on the following:

1. If you want to shoot more videos over stills, then get A7s

2. It one can't hold camera steady or want to use many lenses, get the A7 II. OSS (IS/VR) is in the body.

3. It you don't want to use a flash and shoot wide open, go A7s

4. If you want large prints, go A7 II

5. If you buy an A-Mount to E-Mount Adapter, you can use on both cameras. Meaning also you can use Minolta lenses

6. If you want to shoot stealth, get the A7s

 

Do to small Flange-to-Focal on Sony E-Mount, you can use Leica with an adapter for all of these cameras.

Just use the great ATG's peaking (color will glow/appear on image)when doing manual focus.

 

Many & including myself are using Voiglander & Samyang lenses for these cameras.

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gruesomeflowers Newbie

gruesomeflowers

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your leica lenses should work absolutely fine. i use the 21 1.8, 40 1.4, and 75 1.8 voigtlanders all m-mount using an adapter to emount on both full and crop sensor.

 

ive only used the 85 1.2L so i have no experience with the majority of af L lenses but id say most of the zeiss and zeiss badge primes would be easily comparable. however, you should still keep your gems as you can use them also with the appropriate AF adapter. even if the AF isnt lightning fast in the current adapter, its just a matter of time. and will be improved yearly im sure. 

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benmao Contributor

benmao

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Every lens is an combination of many faults, which exists on speedy lenses wide open. The typical best results can be expected with 2 f/stops down!

This seems to be not the answer to my question. I know that lenses are not most sharp with maximum open aperture.

 

The question was:

Why should a fast lense be not as sharp as a slow one using the same aperture, e.g. f/4.5?

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Cheatah Collaborator

Cheatah

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This seems to be not the answer to my question. I know that lenses are not most sharp with maximum open aperture.

The question was:

Why should a fast lense be not as sharp as a slow one using the same aperture, e.g. f/4.5?

I guess, if you stop down your fast f/1.4 lens to f/4.5 it will be as sharp as an f/4.5 lens fully open! That should be the difference!

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benmao Contributor

benmao

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I guess, if you stop down your fast f/1.4 lens to f/4.5 it will be as sharp as an f/4.5 lens fully open! That should be the difference!

Yes. And maybe the fast should even be more sharp because it is not at it's aperture limit?

 

But this is the opposit opinion compared to:

 

Fast lenses are not as sharp as slow lenses.

 

So I still do not know how this statement is meant.

 

Ernst

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benmao Contributor

benmao

Posted
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I guess, if you stop down your fast f/1.4 lens to f/4.5 it will be as sharp as an f/4.5 lens fully open! That should be the difference!

Yes. And maybe the fast should even be more sharp because it is not at it's aperture limit?

 

But this is the opposit opinion compared to:

 

Fast lenses are not as sharp as slow lenses.

 

So I still do not know how this statement is meant.

 

Ernst

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Austerror Community Regular

Austerror

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It depends on the L lens and which other Sony lens you are comparing it with.

 

Not all Canon lenses are equal in their performance. Not all Sony lenses are equal in their performance too.

 

But, you can get adapters for the Canon lenses, so that they operate on the A7 series with autofocus.

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  • Posts

    • Pieter
      Blurry images on Sony 70-350

      By Pieter · Posted

      I've been using this lens extensively without any sharpness issues. At long focal lengths, you'll have to factor in the need for a faster shutter speed (< 1/500-ish at 350mm) and other factors like atmospheric distortion, fog/dust haze, etc. All these factors contribute to a deterioration of image quality at longer focal lengths.
    • Cameratose
      Blurry images on Sony 70-350

      By Cameratose · Posted

      That's supposed to be a pretty good APS-C lens. Can you try it on a different camera just for the heck of it? Friend? Camera shop? The lens is noted for sharpness, so if you're having as much trouble as you say, you may want to look into a replacement or repair. 
    • broz_tito
      Blurry images on Sony 70-350

      By broz_tito · Posted

      Hi everyone, I’m reaching out to the community because I’m facing a persistent image quality issue with my Sony 70–350mm f/4.5–6.3 G OSS lens, and I’d like to know if this is normal behavior or if my copy is defective. Problem description: I’ve extensively compared the 70–350mm G OSS with my Sony 18–135mm f/3.5–5.6 OSS, using a Sony A6700, under controlled conditions: • Identical lighting and background • Same subject and position (LEGO figure, consistent framing) • Tripod or steady support • Manual focus or AF with center point • Same shutter speed (e.g., 1/200s), similar ISO (ISO 4000–6400), RAW + JPEG • OIS turned on (and also tested with OIS off) My observations: • At 135mm, the 70–350mm G OSS delivers softer, flatter images than the 18–135mm, even when stopped down. • At 350mm, the sharpness drops significantly – the center is soft, and textures (like LEGO tiles or fabric) appear blurred or smudged. • Contrast and micro-detail are noticeably inferior across all focal lengths. • The 18–135mm at 135mm (even cropped) retains better edge sharpness and detail definition. • Both JPEG and RAW files confirm the issue – this is not just JPEG processing or noise reduction. Question to the community: • Have others experienced similar softness with the 70–350mm? • Is it possible I have a decentered or optically misaligned copy? • Is there a known issue with OSS introducing softness at long focal lengths? I wanted to love this lens due to the range and portability, but currently it’s unusable for anything where image quality matters. I’m considering returning or sending it for service. Thanks in advance for any feedback or comparison results you can share.  

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