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Thread: It's alive! Fast wide angle for Alpa

  1. #1
    Senior Member thrice's Avatar
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    It's alive! Fast wide angle for Alpa

    Rollei Schneider 50/2.8 Super-angulon PQS AFD adapted to Alpa mount.

    Big thanks to SK Grimes and ecbuyonline (Rudy) on eBay for their assistance.

    Post any questions here and I'll attempt to answer them
    Quick informal brick wall photos below. I'll probably do some more precisely groundglass focused tests soon.
    Panorama's stitched to the limits of the STC. Image circle looks to be around 84mm. Sharp image circle around 70mm.
    Soft glow wide open, sharp at f/4.0 over the 39x48 sensor, sharp out to 70mm by f/8.0.
    Not sure why this optic (in its PC-TS Canon/Nikon variation) is considered soft.





    f/2.8

    Centre Crop
    Mid Crop
    Extreme Edge Crop

    f/4.0

    Centre Crop
    Mid Crop (reckon I bumped the camera here - sorry)
    Extreme Edge Crop

    f/8.0

    Centre Crop
    Mid Crop
    Extreme Edge Crop
    My Tumblr
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    Senior Member thrice's Avatar
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    Re: It's alive! Fast wide angle for Alpa

    Some bokeh tests
    f/2.8
    In front of plane of focus:



    Behind plane of focus:

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    Re: It's alive! Fast wide angle for Alpa

    A mixed light portrait wide open.
    Although this is a 50mm lens, it is equivalent to 35mm on small format so probably not an ideal portrait lens this close. Thankfully my subject is pretty enough that it doesn't do much harm
    50mm f/2.8 1/4s ISO50


    and a 100% crop
    My Tumblr
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  4. #4
    Senior Member thrice's Avatar
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    Re: It's alive! Fast wide angle for Alpa

    Probably not what I'll use this for, but it's not bad at smaller apertures!
    f/11 with 10mm rear fall



    Centre crop


    Edge crop

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    Re: It's alive! Fast wide angle for Alpa

    I've used this same lens on a Hy6 with a Leaf AFI II 7 (33mb) back - for photographing architectural drawings. By the time you post the images on the web, they are so downsized they look rather modest... but they are quite lovely as shot. Have to dial out a bit of barrel distortion in C1 tho, with the 50. Shooting around f11, in fluorescent light. ISO 50, but these are smaller jpg outputs (about 3 mb, instead of 20mb, and not TIFFs).

    First an overall:
    Click image for larger version. 

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    then edge crop
    Click image for larger version. 

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    Click image for larger version. 

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    Geoff

    www.gigi-photos.com
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  6. #6
    Senior Member thrice's Avatar
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    Re: It's alive! Fast wide angle for Alpa

    Great stuff, thanks Geoff!
    I would hazard a guess your 50 will perform a bit better than mine up close. The lens originally has a floating element, whilst mine has had to be locked down to work on a simple helical.

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