Thread: P4K Observations thread

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  1. #41  
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    For some reason the Black Shading / Calibrate Sensor is disabled on my pocket?
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  2. #42  
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    Quote Originally Posted by soarprod View Post
    For some reason the Black Shading / Calibrate Sensor is disabled on my pocket?
    The Pocket doesn't have black shading.
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  3. #43  
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    Feb 2014
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    Quote Originally Posted by Seanzzxx View Post
    The 0.58x speedbooster will not work on the Pocket 4k. It was made for a much smaller sensor, so it projects the image in too small a format (so you will get massive vignetting). The XL will only work with full-frame lenses.
    fanx!

    so the right speedbooster to use apsc lenses is the .71?
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  4. #44  
    Yep, 0.71x works with aps-c and full frame lenses.
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  5. #45  
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    Quote Originally Posted by Seanzzxx View Post
    Yep, 0.71x works with aps-c and full frame lenses.
    Has this been tested? Has anyone heard from Metabones? That is great news if the 0.71x works with both APS-C and FF. I wonder if there are vignette at certain focal length.
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  6. #46  
    Quote Originally Posted by EYu View Post
    Has this been tested? Has anyone heard from Metabones? That is great news if the 0.71x works with both APS-C and FF. I wonder if there are vignette at certain focal length.
    0.71x focal reducers have been working with APS-C and full frame lenses for years now?

    The main thing is the image circle it projects, which you can simply look up / calculcate, and then look up the image circle required to fully expose the Pocket 4K. I believe 18mm on an APS-C lens might be on the border, but I have not heard anything about vignetting yet from folks having shot the Pocket 4K with a Metabones ULTRA and a Sigma ART 18-35.
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