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Thread: New 50mm M lens from Japan Exposure

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    New 50mm M lens from Japan Exposure

    This looks interesting. Not cheap, but f/1.1:

    japan exposures | films and more (formerly Megaperls Japan Webshop)

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    Senior Member Taylor Sherman's Avatar
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    Re: New 50mm M lens from Japan Exposure

    Small and very light for the aperture, too! Interesting.

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    Re: New 50mm M lens from Japan Exposure

    Wow, 190g only, very interesting.

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    Re: New 50mm M lens from Japan Exposure

    I had one of their lenses, the perar, which was great in the center, but a bit funky in the corners, regarding sharpness. Their designs are tiny, but there is a bit of compromise between OOF rendering and size for 50 mm lenses, so I'd wait for "bokeh" samples, personally. I'm sure it will be a good performer when guaged within its limits. Size is a premium for MS optics.
    Ashwin Rao
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    Re: New 50mm M lens from Japan Exposure

    From what I've seen, this newest (50) is rather soft wide open. So I don't know that I'd expect any direct comparisons to the Noctilii (plural of Noctilux?) or Nokton.

    The MS lenses are quite interesting - and yes, very small. Though they have their quirks (e.g. screw-on lens caps, click-less apertures, etc.).

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    Re: New 50mm M lens from Japan Exposure

    Quote Originally Posted by Double Negative View Post
    So I don't know that I'd expect any direct comparisons to the Noctilii (plural of Noctilux?) or Nokton.
    That would depend if you at looking at a monitor or a credit card statement.

    I actually think it is great that we have these crazy lens designers. Not that anyone here would consider the lens signature beyond the simply resolving power important...

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    Senior Member Taylor Sherman's Avatar
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    Re: New 50mm M lens from Japan Exposure

    The Nokton 50/1.1 isn't exactly "crisp" wide-open. . .

    I too think it's pretty awesome that there's "a guy" in Japan (or anywhere) making custom lenses. I hope that it's something that becomes more possible as personal-scale manufacturing is making advances.

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    Re: New 50mm M lens from Japan Exposure

    Quote Originally Posted by Taylor Sherman View Post
    I too think it's pretty awesome that there's "a guy" in Japan (or anywhere) making custom lenses. I hope that it's something that becomes more possible as personal-scale manufacturing is making advances.
    My hat is also off to Mr. Miyazaki for his design skill and perseverance. It's wonderful to know that a small family shop is able to produce a lens like this, and while it may be a little long in the "character" department I'm sure it will produce captivating images in the right hands.
    Last edited by StephenPatterson; 12th October 2012 at 06:54.

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    Re: New 50mm M lens from Japan Exposure

    Of course. Don't get me wrong. I love that Miyazaki-san is making these cool lenses for us. The 28 and 35 Perars are really rather good. There's certainly nothing wrong with character lenses either.

    As for the Nokton - believe me, I know. Wide open it's... Weak in a few areas.

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    Re: New 50mm M lens from Japan Exposure

    As a matter of interest, what would be the effective 'T'-stop of this f1.1 lens after losing it's stated 3% transmission loss?

    ............. Chris

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    Re: New 50mm M lens from Japan Exposure

    I'm going to pop into a Shop in HK on Monday or Tuesday which has one of these. The owner says I can have a test with it so I'll try and get some shots uploaded!
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    Re: New 50mm M lens from Japan Exposure

    Chris - 3% transmission loss is 4.4% of a stop, so f/1.1 just becomes T/1.14, not much difference.

    stops lost = -log2(transmission) = -log2(0.97) = -log(0.97)/log(2) = 0.0439

    T rating = F + stops lost = 1.1 + 0.0439 = 1.1439
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    Re: New 50mm M lens from Japan Exposure

    O_o

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    Re: New 50mm M lens from Japan Exposure

    I didn't manage to shoot with this as the boss of the shop had taken the lens off to try it out. However I reviewed some more pictures of its output.

    A great deal softer than a Nokton 1.1 and everything has a somewhat blueish tinge to it. I don't think I will be following up with this one!

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    Re: New 50mm M lens from Japan Exposure

    Quote Originally Posted by Taylor Sherman View Post
    Chris - 3% transmission loss is 4.4% of a stop, so f/1.1 just becomes T/1.14, not much difference.

    stops lost = -log2(transmission) = -log2(0.97) = -log(0.97)/log(2) = 0.0439

    T rating = F + stops lost = 1.1 + 0.0439 = 1.1439
    Taylor - Thank you, and my apologies for not getting back to this thread earlier.

    ............... Chris

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    Senior Member Taylor Sherman's Avatar
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    Re: New 50mm M lens from Japan Exposure

    No problem, I'm happy to geek out about stuff here and there

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