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Medium format lenses!

Cheatah

By Cheatah,
in Legacy Lenses

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Cheatah

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I have ordered an P6/K6 > E-mount adapter to use my medium format 6x6 lenses, 2,8/80mm and 5,6/250mm lenses on my A7 and A6000!  The lenses are quite heavy, and comparable bulky, but having also an advantage! I am using the center of These medium format lenses only, so to speak the sweet spots! 

 

Optical may be not as crisp as 35mm glasses, but with high contrast, no distortions, no corner vignettings!

 

On my A6000, the 80mm lens is an 120mm lens with an close distance of 60cm. Not too bad für an 120mm focal length!

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Guest Jaf-Photo

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The top two photos are very contrasty and nice.

 

I've used my Mamiya 645 lenses adapted to Sony full frame and APS-C. To me, the disappointments was that you don't get a medium format look on a smaller sensor. Therefore, I don't really use them much. The 35mm lenses are smaller and often sharper on a small sensor.

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dbmiller Enthusiast

dbmiller

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Wow - my text didn't show up in my post... Trying to edit...

 

Didn't someone (More edit - Rhinocam) make a rig that positioned the sensor behind all the areas the medium format lens covers? Essentially giving you the Brenizer approach to building up a medium format image by stitching together the pieces.

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Cheatah Collaborator

Cheatah

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The top two photos are very contrasty and nice.

 

I've used my Mamiya 645 lenses adapted to Sony full frame and APS-C. To me, the disappointments was that you don't get a medium format look on a smaller sensor. Therefore, I don't really use them much. The 35mm lenses are smaller and often sharper on a small sensor.

 

Yes, the 35mm lenses are developed to be generally sharper on the 35mm format, but the medium format lenses providing all the goodies of an sweet spot, and in addition with APS-C more focal length!  The missing crisp sharpness can be easyly obtained in post processing!  It's not a must, but if you keeping some medium format lenses unused in your drawer, there is an clever possibility to use them now with your Sony E-Mount cameras!

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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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