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Thread: M4/3 to Leica

  1. #201
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    Re: M4/3 to Leica

    i am shipping the LTm to G1 adapters tomorrow.

    e-mail me for details

    [email protected]

  2. #202
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    Re: M4/3 to Leica

    Quote Originally Posted by willpix View Post
    One more thing I'd like to confirm with one of you knowledgeable G-1 shooters. I believe I read elsewhere that any lens with a rear element protruding beyond the G-1>Leica M adapter is unusable. That means no marriage between the Panny G-1 and my cherished 21mm f/3.4 Super Angulon, right?

    Nope!


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    Re: M4/3 to Leica

    Quote Originally Posted by willpix View Post
    One more thing I'd like to confirm with one of you knowledgeable G-1 shooters. I believe I read elsewhere that any lens with a rear element protruding beyond the G-1>Leica M adapter is unusable. That means no marriage between the Panny G-1 and my cherished 21mm f/3.4 Super Angulon, right?
    Sad, but true. It would have been so sweet if we could have used the SA on the G1.

  4. #204
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    Re: M4/3 to Leica

    i hope my zeiss 21/4.5 fits in there ok...

    this is pretty exciting really, using my zm lenses on this little digital.

    joe

  5. #205
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    Re: M4/3 to Leica

    How far does the rear element extend on the 21?

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    Re: M4/3 to Leica

    i'd have to measure but just looking at it? not very far, no where near the 21 leica.

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    Re: M4/3 to Leica

    Quote Originally Posted by back alley View Post
    i hope my zeiss 21/4.5 fits in there ok...

    this is pretty exciting really, using my zm lenses on this little digital.

    joe
    That C-Biogon would be a no go.

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    Re: M4/3 to Leica

    Quote Originally Posted by Vivek View Post
    That C-Biogon would be a no go.
    that's disappointing.
    have you tried it?

    joe

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    Re: M4/3 to Leica

    The dangerous thing with the G1 when mounting lenses is the shutter. Since its normally open, it is easy to overlook. It closes and reopens very quickly at the start and end of each exposure, and is difficult to actually see (there is a slow-motion film of it somewhere; Ive lost the link).

    Ive done a couple of measurements on mine with a caliper (very carefully), and enclose a rather blurry picture of the lens mount and innards of the camera. The large, flat surface at point A in the pic is situated 6.5 mm below the plane of the lens mount front; Id say thats about the safe limit for anything to intrude into the camera.

    The frame seen at B is the shutter window; the blades pass *immediately* below it. That frame is 10.5 mm below the lens mount front surface, and anything intruding more than that means certain disaster at first exposure! I would subtract at least 2 or 3 mm as a safety margin.

    The sensor surface itself is several mm below the plane of the shutter window, but Ill be d*mn*d if I will put a caliper point to it...

    Finally the customary disclaimer: Ive done the measurements to the best of my abilities, but I take no responsibility whatsoever for what might happen if you mount anything on your camera: you have to measure yourself!

    I post these results only to help those who havent yet access to the camera, but want to get some idea of what lenses may be safely mounted.
    I hope that Vivek or Jlm,, or somebody else can fill in with the effective height of the converters; Im still waiting for mine.

  10. #210
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    Re: M4/3 to Leica

    Here is the link to the shutter video:

    http://www.youtube.com/watch?v=-dK6Qa1Iy4Y

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    Re: M4/3 to Leica

    Quote Originally Posted by back alley View Post
    that's disappointing.
    have you tried it?

    joe
    No. I haven't lost 'it', yet.

    If previous posts here have no meaning, you try it and describe to us how the shutter looks before and after.

  12. #212
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    Re: M4/3 to Leica

    the distance between the LTM flange and the G1 flange is very close to .400", (10 mm). if your lens element is less than 1.10" (28mm) diameter, it can extend another .200 (5mm). so a lens with a rear element of less than 1.17" can extend .600" beyond its base flange, assuming the lens is measured at inf focus, and assuming that is where the lens extends the most

    if the element is larger diameter, it will interfere the spring-loaded electrical contacts in the body, in the case of a larger, no more than another .12", or .52" total.

    for example, the CV 15 extends about .56" and is 1.06" in diameter, works fine
    the 12mm CV also extends about .56" and is .87" dia (at the interference end) and works fine


    The M to G1 adapters hold the lens flange about .040" closer to the G1 flange, so the numbers get reduced by .040"

    for example the WATE extends .420" (.99" dia), that is less than .52 and will work fine
    the 28 Cron extends .47" (1.14 dia) and that will work
    Last edited by jlm; 16th December 2008 at 08:38.

  13. #213
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    Re: M4/3 to Leica

    I'm not sure I understand John's exaplanation exactly, but I rushed home to measure the three other lenses I might like to use on the G1: 21mm Elmarit ASPH, 24mm Elmarit ASPH and 35mm Summilux ASPH - they all have a rear lens diameter of 29mm (1.142") and a maximum extension behind the flange of 13mm (0.51").

    John, will these lenses be OK?

    Others, like the Noctilux, 75mm's and 90's are fine. The 50mm f2.8 Elmar is obviously a no-no if you try to collapse it. The 90/4 collapsible Elmar will make a lovely 180mm f4 lens and because it does not project beyond the bayonet will be fine. Judging by the pictures on the Leica web-site, the 21/1.4, 24/1.4, 50/0.95 will be fine as well as their rear lenses do not appear to extend beyond the bayonet. Assuming of course the pictures are of real lenses, not mock-ups.

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    Re: M4/3 to Leica

    they should fit

  15. #215
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    Re: M4/3 to Leica

    Quote Originally Posted by jlm View Post
    if your lens element is less than 1.10" (28mm) diameter, it can extend another .200 (5mm). so a lens with a rear element of less than 1.17" can extend .600" beyond its base flange
    I'm confused: is the 1.10" in the above paragraph supposed to be 1.17"?

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    Re: M4/3 to Leica

    oops! the number should be 1.7"

    jm

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    Re: M4/3 to Leica

    1.7" = 43mm? You sure?

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    Re: M4/3 to Leica

    oh man...1.170"

  19. #219
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    Re: M4/3 to Leica

    John, does this look correct?


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    Re: M4/3 to Leica

    my most precise measurement tool is a craftsman tape measure...so for what it's worth...

    it looks like, on the zm 21/4.5, that the distance from the flange to the rear of the lens is 13 mm - and 12 mm for the 25/2.8

  21. #221
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    Re: M4/3 to Leica

    Those measurements look ok as long as your Craftsman and your measuring technique are sound.

    And as long as the diameter of the rear part of the lens is <29.7mm.

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    Re: M4/3 to Leica

    looks to be a hair over 26 mm.

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    Re: M4/3 to Leica

    Lookin' good so far, Joe.

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    Re: M4/3 to Leica

    Is it safe to assume the 50 lux asph and pre-asph as well as the 90 asph will work? Thanks

  25. #225
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    Re: M4/3 to Leica

    Quote Originally Posted by monza View Post
    Those measurements look ok as long as your Craftsman and your measuring technique are sound.

    And as long as the diameter of the rear part of the lens is <29.7mm.
    I thought I'd better get out my electronic calipers to measure that rear lens diameter more accurately:

    21mm Elmarit ASPH: 29.10mm
    24mm Elmarit ASPH: 29.04mm
    35mm Summilux ASPH: 29.00 mm

  26. #226
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    Re: M4/3 to Leica

    Quote Originally Posted by wolverine View Post
    Is it safe to assume the 50 lux asph and pre-asph as well as the 90 asph will work? Thanks
    I wouldn't think those would have any issue...its the wides with extended rear elements that are the problems.

  27. #227
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    Re: M4/3 to Leica

    Quote Originally Posted by marknorton View Post
    I thought I'd better get out my electronic calipers to measure that rear lens diameter more accurately:

    21mm Elmarit ASPH: 29.10mm
    24mm Elmarit ASPH: 29.04mm
    35mm Summilux ASPH: 29.00 mm
    Looks like 1mm or less to spare, in diameter and in flange-to-rear lens distance, but that's enough.

  28. #228
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    Re: M4/3 to Leica

    All these discussion about which one hit the shutter is a bit redundant if you look the pics of the adapter posted by Bill.

    If a lens fits that adapter, it will fit the camera.

  29. #229
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    Re: M4/3 to Leica

    Vivek, you've got it backwards. The adapter photos are redundant.

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    Re: M4/3 to Leica

    Yes, both are redundant for me.

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    Re: M4/3 to Leica

    Any plans for a leica R to mFT adapter?

  32. #232
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    Re: M4/3 to Leica

    Novoflex will have one in February, or, you can use Leica R glass now using two adapters (Leica R --> 4/3 and 4/3 --> 4/3)

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    Re: M4/3 to Leica

    Are two adapters like doing an extension tube? I have always thought that the further the lens gets away the closer you focus?

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    Re: M4/3 to Leica

    Quote Originally Posted by wolverine View Post
    Are two adapters like doing an extension tube? I have always thought that the further the lens gets away the closer you focus?
    Yes, it is. Just like using an extension tube.

    However, here, if the lens' infinity focus is preserved in spite (or because) of the adapter, then it would behave like a normal lens. There is no light lost and the focal length of a lens does not change due to smaller or bigger sensors.

    The G1 and a Leica M adapter is now a camera that can take Leica M lenses.

    The G1 + a Leica M adapter plus a Leica M to LTM adapter makes it a camera that accepts and works with Leica thread mount lenses and so on.

    So, this modular approach is even more versatile than Tamron's line of Adaptall design lenses.

  35. #235
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    Re: M4/3 to Leica

    All very interesting. I'm looking forward to a live view through a Noctilux, though presumably, if the adapter restricts the diameter to 29mm, will that cause problems with larger rear elements than that? The Nocti is about 34mm but doesn't project backwards like the wide-angles.

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    Re: M4/3 to Leica

    Some of the shots I posted here were with a Canon 50/0.95.

    The rear diameter calculation/confusions left me scratching my head (only briefly).

    That lens' (50/0.95) rear element does not protrude outside the lens mount but has a diameter of ~36mm.

  37. #237
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    Re: M4/3 to Leica

    Assuming the chart accurately reflects John's post, the Noct would be fine if it extends less than 9mm.

    I sold one a few weeks ago, would have been nice to see it on a G1. Although it will be very Dolly Parton-ish, front heavy.

  38. #238
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    Re: M4/3 to Leica

    There's no issue about the Noctilux lens projecting too far back. I just wondered what the effect of the 29mm (or so) hole will be when the lens diameter is 34mm (or so).

  39. #239
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    Re: M4/3 to Leica

    How much of that 34mm consists of retaining ring? I wouldn't think it would cause any problem.

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    Re: M4/3 to Leica

    It won't cause any problems. As I already said, if a lens fits the adapter, it is ready to be used.

    Monza, Dolly Parton?! Are you ancient as well?

  41. #241
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    Re: M4/3 to Leica

    No, I have a black G1, that makes me a young whippersnapper. Otherwise I'd have a red one.

    OK Pam Anderson?

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    Re: M4/3 to Leica

    No,no, no. That isn't it.

    No comparisons to any body parts (whatever gender).

  43. #243
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    Re: M4/3 to Leica

    Can you please post FULL SIZE raw and jpeg samples of your great Leica Lenses on Panasonic G1?
    By posting a 1mp sample means nothing about image quality
    Very easily a crap lens could be good at 1mp!
    PLEASE FULL SIZE!

  44. #244
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    Re: M4/3 to Leica

    actually I would like someone to take a 'classic leica look' picture ( eg not a brick wall, haphazard collection of booze bottles, coloured pencils and fluffy toys)... maybe a street scene or an indoor natural light portrait on

    1) M8
    2) G1
    and if possible
    3) RD 1

    Dont care which lens you use.. lux cron or 'it... just the same shot

    you can even use PP... but the same to all shots

    just curious

  45. #245
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    Re: M4/3 to Leica

    Quote Originally Posted by akaloith View Post
    Can you please post FULL SIZE raw and jpeg samples of your great Leica Lenses on Panasonic G1?
    By posting a 1mp sample means nothing about image quality
    Very easily a crap lens could be good at 1mp!
    PLEASE FULL SIZE!
    Sorry. I NEVER post any full size (any format) pictures.

  46. #246
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    Re: M4/3 to Leica

    Quote Originally Posted by kevinparis View Post
    actually I would like someone to take a 'classic leica look' picture ( eg not a brick wall, haphazard collection of booze bottles, coloured pencils and fluffy toys)... maybe a street scene or an indoor natural light portrait on

    1) M8
    2) G1
    and if possible
    3) RD 1

    Dont care which lens you use.. lux cron or 'it... just the same shot

    you can even use PP... but the same to all shots

    just curious
    Be nice to Jono!

    He is the only one who has all the three cameras you mention!

  47. #247
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    Re: M4/3 to Leica

    I think Jono has most cameras actually...

  48. #248
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    Re: M4/3 to Leica

    I am always nice to jono :-) as far as I recall I have never personally insulted him....

    I may have expressed an alternative perspective on a camera he loves... but that was all in the spirit of lively debate and discourse... which of course ended up with mild disagreement about who was most correct :-)

    truth be told... I really envy my other half's lenses... even the ones she casts aside... and would love to see my comparison request.

    k

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    Re: M4/3 to Leica

    nope, Jono has forsaken my beloved R-D1, sniff, sniff...
    Last edited by cam; 18th December 2008 at 15:24. Reason: g

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    Re: M4/3 to Leica

    Kevin, I did not imply you personally attacked Jono at all. I did not read that earlier exchange like that.

    Having used the M8 sporadically and having owned and used the R-D1s for a while, I can only say this. The M8 wins easily in terms of image clarity (despite the IR/UV problems it has). It is a toss up between R-D1s and the G1.

    Price, versatility and many other factors easily favor the G1 over the two.

    BTW, akaloith, read Jack's reply here: http://forum.getdpi.com/forum/showthread.php?t=4304

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