Leica 25mm f/1.4 vs. Nikon 35/1.8 DX + Speed Booster

Discussion in 'Adapted Lenses' started by brianc1959, Sep 15, 2013.

  1. brianc1959

    brianc1959 Mu-43 Regular

    39
    Sep 14, 2013
    Virginia
    Brian Caldwell
    Although the Nikon 35/1.8 + Speed Booster = 25mm f/1.2 combination isn't as compact as the Leica/Panasonic 25/1.4, you do gain 1/3 stop of speed and the corners are actually sharper. In the test chart image image below both lenses are shot wide open (f/1.2 and f/1.4, respectively).
     

    Attached Files:

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  2. carpandean

    carpandean Mu-43 Top Veteran

    827
    Oct 29, 2010
    Western NY
    Nice comparison. I will definitely consider using a Speed Booster if/when (a) they release one with AF, which there was talk of for Nikon -> :43:, and (b) I have a body with effective on-sensor PDAF. For what I do, AF is too important.
     
  3. RnR

    RnR Mu-43 All-Pro

    Sep 25, 2011
    Brisbane, Australia
    Hasse
    Thanks Brian for this. I have already been looking for a cheap copy of the 35mm f1.8. Leaning towards the Voigtlander 40mm f2 for leveraging the compact nature of both my E-PM2, and the Metabones adapter itself.

    Oh - and hurry up with the Konica Speedbooster adapter (yeah I know - its not you, but Metabones that has to make the decision) :biggrin:
     
  4. meyerweb

    meyerweb Mu-43 Hall of Famer Subscribing Member

    Sep 5, 2011
    OTOH, by the time you add up the cost of the speed booster + lens, you've probably spent more than you would for the native lens, and you still don't have AF, and are limited in your exposure modes.
     
  5. RT_Panther

    RT_Panther Mu-43 Legend

    May 4, 2011
    Texas
    Heck it's less than $200 USD new!
     
  6. RnR

    RnR Mu-43 All-Pro

    Sep 25, 2011
    Brisbane, Australia
    Hasse
    For sure. A Metabones Speedbooster is close to the same price as the Leica 25mm (at least here in Australia). However once you have a few Nikon mount lenses, it suddenly gets alot more interesting. For example, how would the Nikon 105mm f2.5 ai(s) with a Speedbooster compare to the Olympus 75mm f1.8? I would wager the Oly would win, but it would be a close race, and the 105mm f2.5 is rather cheap these days. In fact the Speedbooster + 105mm in good condition would be about the same price as the Oly. A $250 Nikon 180mm f2.8 ED with a speed booster? Might even give the hypothetical $3000 150mm f2.8 a half decent race :thumbup:

    Not sure I understand your reference to exposure modes?

    lol - fair point. Here in Australia... about $AU180 to $AU230 - 2nd hand to new prices. Not too far of yours.
     
  7. brianc1959

    brianc1959 Mu-43 Regular

    39
    Sep 14, 2013
    Virginia
    Brian Caldwell
    I recently tried out a copy of the Olympus 75/1.8 just to do this very comparison. Basically, you are correct, as can be seen below. The Olympus lens is slightly better at f/1.8 than the Nikon 105/2.5 + SB at f/1.8. The difference appears entirely due to the extensive use of ED glass in the Olympus, and as a result it avoids the slight purple fringing seen in the Nikon. At f/2.8 its very difficult to tell the two lenses apart.
     

    Attached Files:

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  8. brianc1959

    brianc1959 Mu-43 Regular

    39
    Sep 14, 2013
    Virginia
    Brian Caldwell
    True enough, especially if the Leica 25/1.4 will be your only lens for this format. But to be fair, there is no "native" 25mm f/1.2 lens for m4/3.
     
  9. RnR

    RnR Mu-43 All-Pro

    Sep 25, 2011
    Brisbane, Australia
    Hasse
    Thanks very much for doing that test. That explains a few things with my 105mm + SB combo ie. very crispy results.
     
  10. fredlong

    fredlong Just this guy...

    Apr 18, 2011
    Massachusetts USA
    Fred
    No, but there is a 25/.95

    Fred
     
  11. speedandstyle

    speedandstyle Mu-43 Hall of Famer

    Very nice comparisons! Hope you can post up more results from various lenses.
     
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