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  1. #4051  
    Senior Member Paul Russell's Avatar
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    Yep, my 50mm AEG glows like mad when it's wide open at f1.4. After 2.8 it calms down a bit.
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  2. #4052  
    Senior Member Ben Scott's Avatar
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    Yep that's why my Contax set had the 50 1.7 and not the 1.4. The 1.7 is razor sharp from wide open.
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  3. #4053  
    It doesn't seem that bad after adjusting the exposure.



    I wonder how similar the f/1.4 (T1.6) and the f/1.7 (T2?) are wide open.
    Last edited by Vladimir Cazacu; 06-28-2017 at 07:55 AM.
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  4. #4054  
    Senior Member Ben Scott's Avatar
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    The Contax 50mm 1.7 wide open

    London Marathon 2016 by Ben Scott, on Flickr

    Brac Island, Croatia by Ben Scott, on Flickr

    Interview Stills by Ben Scott, on Flickr
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  5. #4055  
    Im going to purchase some of the Cordvision Cine Rings for my new lenses, but the suggested Adorama lens caps are no longer available. Any one have a good alternative they can recommend??
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  6. #4056  
    Quote Originally Posted by Paul Russell View Post
    Yep, my 50mm AEG glows like mad when it's wide open at f1.4. After 2.8 it calms down a bit.
    Well the fact is it is shot at 2.8, if it was full open on 1.4 I would understand the glow and softness. Only when stopping down to around 5.6 it's getting less.
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  7. #4057  
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    In Europe these contax zeiss lenses seem to be more rare. I have been looking for a contax zeiss 35mm 1.4, but have not seen one for sale so far. Not sure what the prices are up to these days.
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  8. #4058  
    Hey everyone! Nick Morrison, you sir are awesome. Been a long time lurker of this thread before I finally decided to pull the trigger and start building a set of Contax Zeiss lenses! I currently have the 28mm f/2 AEG, 50mm f/1.4 MMJ, 85mm f/1.4 MMJ, 35-70mm f/3.4 MMJ, and 35mm f/1.4 MMJ. Blown away by the quality.


    Anyway, I was hoping to get some second opinions though on the 35mm f/1.4 MMJ that I bought off eBay. The description said it had been professionally cleaned and was free of fungus, haze, or residue. However when I inspected it with a flashlight, I noticed some markings towards the front of the lens. Here are pictures:

    https://flic.kr/p/V1vEps

    Front of the lens with no flashlight - looks clear


    https://flic.kr/p/W2Zxob
    Looking through the front of lens and everything looks clear still


    https://flic.kr/p/V1vHPU
    Looking through the back of the lens, everything still looks good.


    https://flic.kr/p/V1vFEy
    Shine a light through the front, and the back looks fine with the exception of some dust.

    Now here is where I see the problem:


    https://flic.kr/p/W2Zvh7
    When I shine a flashlight through the back of the lens, this mark shows up towards the front element in the center. I can't tell what it is. Is it haze? Residue? I don't believe it's fungus. When I shine a light at the front, everything looks fine.

    https://flic.kr/p/VGEXdW

    Here are some test images, but I didn't notice the mark showing up.
    Shot against a brightly lit white wall at f/16


    Show against a blue sky also at f/16


    Another random test image:


    So do you think I should return the lens?
    Is that marking going to get worse?
    Will I be fine if I take it to a professional cleaner?
    Could my lens coating, micro-contrast, color, etc be affected in comparison to a clean Contax 35mm f/1.4?

    Sorry for the long post, but I really want to get to the bottom of this!

    Here is a link to all the photos if you want higher resolution: https://flic.kr/s/aHskYeBejC
    Last edited by Tony Yang; 07-01-2017 at 02:46 AM.
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  9. #4059  
    If I was to guess, I'd say it looks like coating damage. But the only way to be sure is to take it to a lens technician to give you a diagnosis.

    One of the dangers with buying a lens that once had fungus (mould), is that even if you clean it, there's possibly permanent coating damage. Also, it's almost impossible to say the fungus will never return at some time in the future. If there's any evidence of fungus or haze, I won't touch the lens. You may be able to take images with it, but for how long? Will it still be ok in five, ten or twenty years? I personally fell it's not worth the risk.

    There's a reason why many lens repair shops, such as CinemaTechnic, refuse to take lenses that have/had fungus.

    http://cinematechnic.com/resources/a..._fungus_damage
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  10. #4060  
    Gotcha. It's my first purchase with vintage lenses and first experience with any kind of lens deformity. Luckily, the seller has agreed to refund me the full amount and I'll just repurchase another 35mm f/1.4 MMJ!
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