No Name Canon EF to u43 Focal Reducer and New APS-C 25mm f/1.4 cctv lens Reviews

Discussion in 'Adapted Lenses' started by samgoldphotos, Nov 19, 2014.

  1. samgoldphotos

    samgoldphotos New to Mu-43

    5
    Nov 19, 2014
    Orlando, FL
    Samuel Dorado
    Howdy folks,

    I recently acquired a generic focal reducer (same as one discussed here :https://www.mu-43.com/showthread.php?t=68723) and the new APS-C 25mm f/1.4 cctv lens that are floating around eBay. After about a week of use I have posted user reviews to my blog which include sharpness examples with 100% crops. Both are surprisingly good (the focal reducer does not exhibit any annoying flare issues) and you can find more about what I thought of them here:

    Focal Reducer:
    <a href="https://www.flickr.com/photos/samgold/15780647331" title="Obligatory by Samuel Dorado, on Flickr"> 15780647331_aa765035fc. "500" height="375" alt="Obligatory"></a>
    http://samgoldphotos.blogspot.com/2014/11/user-review-generic-canon-ef-to-m43.html

    25mm cctv lens:
    <a href="https://www.flickr.com/photos/samgold/15630742197" title="Leading lines by Samuel Dorado, on Flickr"> 15630742197_7f615a3e77. "500" height="375" alt="Leading lines"></a>
    http://samgoldphotos.blogspot.com/2014/11/user-review-aps-c-25mm-f14.html
     
  2. Turbofrog

    Turbofrog Mu-43 Hall of Famer

    Mar 21, 2014
    Initially I was thinking your review was about combining the two - a cheap 25mm/1.4 to use with the focal reducer! That was going to excite me, but alas I already have a 20mm/1.7 to fill that niche. Nice shots, nonetheless, though! I've also been generally happy with my cheap eBay focal reducer. It definitely lets you get shots you simply wouldn't be able to otherwise.
     
  3. samgoldphotos

    samgoldphotos New to Mu-43

    5
    Nov 19, 2014
    Orlando, FL
    Samuel Dorado
    Thank you, and yes, maybe I should have created a separate thread for each...
     
  4. Jüri

    Jüri Mu-43 Regular

    25
    Dec 14, 2013
    Tartu
    Jüri
    I own several Fujian branded CCTV lenses, in fact all the three that I'm aware of. 25mm, 35mm and 50mm. While the the former two are my absolute favourite lenses, the 50mm is a serious dissapointment. According to my observations in terms of DoF and exposure, it's actually f2.8 instead of the designated f1.4, so it's pretty useless.

    Thus, as exited as I am to hear about the new 25mm CCTV lens, I'm still a bit cautious. Is the aperture actually f1.4? And am I correct to assume that the FoV on MFT camera would be similar to about a 38mm lens, since it's 25mm on APS-C?
     
  5. samgoldphotos

    samgoldphotos New to Mu-43

    5
    Nov 19, 2014
    Orlando, FL
    Samuel Dorado
    I am not certain about the actual light transmittance but I can try and test this out in the next couple of days. However, I can say that it is pretty hard to manually focus wide open without magnification because the DOF is so shallow. As for its focal length rendering, my understanding is that it depends on what system you mount the lens to. On a micro four thirds camera it renders a 50mm FOV due to the 2x crop factor. It is not 25mm on APS-C, it would be 37.5 - 40mm depending on the 1.5 or 1.6 crop factor.
     
  6. darosk

    darosk Mu-43 Top Veteran

    705
    Apr 17, 2013
    Kota Kinabalu, Malaysia
    Daros
    I had the older Fujian 25mm - great center sharpness but the vignetting was too much for even me, a fan of lo-fi. Thanks for the heads up, I didn't know this existed - at this price really can't complain, and from the samples it looks to be at least as sharp as the smaller model.
     
  7. samgoldphotos

    samgoldphotos New to Mu-43

    5
    Nov 19, 2014
    Orlando, FL
    Samuel Dorado