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Thread: Sony SEL075 UWC

  1. #1
    Super Duper
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    Sony SEL075 UWC

    Recently, i bought one from Guy (Thanks Guy! ) . This is custom modified to fit the Sony RX1R II (which is still at the repair shop).

    While it works well with wider lenses like the Sony FE 28/2 it was made for and Sone E 16/20 (same bayonet connection), there is something interesting mismatch on the longer FE 55/1.8.

    On this lens, the UWC, besides making it wider also projects fuzzy, dreamy images with a glow from f/1.8 to f/2.5. This effect is kept at all focus distances all the way to infinity. It is gone by f/4 though.

    Because of the fuzz, AF does not work well and manual focus is mandatory.

    I will post some samples when I get some more time.

  2. #2
    Super Duper
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    Re: Sony SEL075 UWC

    Untitled by Vivek Iyer, on Flickr

    RX1R II (#3) with the SEL075 UWC, f/7.1

    This UW converter is fine for close ups. At infinity, the CA, smearing etc, is a bit too much.
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  3. #3
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    Re: Sony SEL075 UWC

    Actually, I find it to be a better performer / more useful than just for closeups ... at least for the type of photography I do with it and when mounted on an RX1, anyway.

    Perhaps the RX1RII's higher-res sensor is more revealing of its flaws?

    Focus distance for this photo was ~15 feet and at f8, there's enough resolution to see individual tines at the very top of the saguaro. I don't think I've ever used it at infinity, though, nor with the lens more open than f5.6, so who knows?

    Last edited by Audii-Dudii; 9th October 2016 at 16:57.

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