Canon 50mm f/1.4 and RJ Lens Turbo Review

Discussion in 'Adapted Lenses' started by ijm5012, Oct 5, 2015.

  1. ijm5012

    ijm5012 Mu-43 Legend

    Oct 2, 2013
    Pittsburgh, PA
    This past weekend, I decided to purchase a Canon 50mm f/1.4, Fotodiox adapter, as well as an RJ Lens Turbo adapter, all for about $165. I'm interested in adapted manual focusing glass as I'm getting in to shooting video more, where I use MF most of time anyways. I wanted to put together a quick summary of the lens and Lens Turbo, as well as providing some comparative samples (which have not been corrected at all to adjust for sharpness).

    In short, the lens is excellent on the standard adapter, even wide open. With the Lens Turbo, there is a bit of softness at the edges when shot wide open, but nothing that is too terrible IMO. Stopping the lens down a stop or two eliminates the sharpness (but also negates the speed advantage of using the lens turbo). Overall I'm happy, especially since I picked up the lens turbo for $65 on eBay (compared to $400 for an FD-m43 Speed Booster from Metabones). The next lens I'm looking to pick up is the Canon 100mm f/2, another superb lens that's pretty compact.

    Anyways, on to the sample images...

    The four below shots were taken with the camera and subject in the same location, only the adapter was changed.

    50mm @ f/1.4 on standard adapter

    50mm @ f/1.4 on lens turbo adapter (36mm f/1.0, shot from the same location)

    50mm @ f/11 on standard adapter

    50mm @ f/11 on lens turbo adapter (36mm f/8 shot from the same location)

    The four below shots had the framing adjusted to try to generate the same framing regardless of which adapter was on the camera

    36mm f/1.0, Left

    36mm f/2.0 Left

    50mm f/1.4

    50mm f/2.8
    Last edited: Oct 6, 2015
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  2. carlosfm

    carlosfm Mu-43 Veteran

    Oct 3, 2015
    Lisbon, Portugal
    Is this the nFD (or "new" FD) 50mm f1.4 lens?
    I have one.
    It's a little soft at f1.4 but at f2 is already very sharp.
    It's a very good lens, if you don't need to use it wide open at f1.4.
    The slight softness at 1.4 could be good for portraits, though.
    But I prefer the 35mm f2.0 SSC. This one is a gem, even wide open at f2.0 - ultra sharp and good colours.
  3. ijm5012

    ijm5012 Mu-43 Legend

    Oct 2, 2013
    Pittsburgh, PA
    It's an FDn 50 f/1.4. I'm amazed at how small it is, and how nice (and easy) it is to manually focus the lens on my GH4.

    I would say that on a standard adapter, wide open it's quite good given what it is (a FF lens that's at least 25 years old). The Lens Turbo does soften the image a bit at the corners/edges wide open, but they sharpen up nicely by stopping down one stop. The benefit of that is the lens ends up being a 36mm f/1.4 when stopped down a stop, so it's still a stop faster than the 35mm f/2, and that extra stop goes a long way towards generating a more narrow DoF, something I'm looking for when shooting video.

    I ordered an FDn 100mm f/2 last night, so between the two lenses and the Lens Turbo, I'll have a 36mm f/1.0, 50mm f/1.4, 72mm f/1.4, and 100mm f/2.0. I can't wait to get out next weekend and shoot some video with the lenses.
    Last edited: Oct 6, 2015
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