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  1. #61
    2F/2F's Avatar
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    Better Sense is correct. The dot should be photographed, but not attached to the camera to tell you anything useful. At that point, you could just photograph anything for the test to work.
    2F/2F

    "Truth and love are my law and worship. Form and conscience are my manifestation and guide. Nature and peace are my shelter and companions. Order is my attitude. Beauty and perfection are my attack."

    - Rob Tyner (1944 - 1991)

  2. #62
    David A. Goldfarb's Avatar
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    And if you look closely at the projected dot from a typical laser pointer, it's not really a great resolution target. From the distance of the audience at some dreadful PowerPoint presentation, it seems well defined, but up close, it's a bit like a mark from a thick crayon. I'd think that even a page of newsprint would be more informative.
    flickr--http://www.flickr.com/photos/davidagoldfarb/
    Photography (not as up to date as the flickr site)--http://www.davidagoldfarb.com/photo
    Academic (Slavic and Comparative Literature)--http://www.davidagoldfarb.com

  3. #63
    2F/2F's Avatar
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    Quote Originally Posted by David A. Goldfarb View Post
    I'd think that even a page of newsprint would be more informative.
    Exactly what I almost suggested in my last post.
    2F/2F

    "Truth and love are my law and worship. Form and conscience are my manifestation and guide. Nature and peace are my shelter and companions. Order is my attitude. Beauty and perfection are my attack."

    - Rob Tyner (1944 - 1991)

  4. #64
    rhmimac's Avatar
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    Re: Does "no mirror" really = sharper negs?

    I found a very nice graph showing the vibration amplitude set out to the shutter & mirror opening subs. Closing action

    See:http://photo.net/learn/nature/mlu

    Makes me thinking of buying an F4 for my macrowork on a 105mm

    rhmimac

  5. #65
    Lee L's Avatar
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    Quote Originally Posted by rhmimac View Post
    I found a very nice graph showing the vibration amplitude set out to the shutter & mirror opening subs. Closing action

    See:http://photo.net/learn/nature/mlu

    rhmimac
    Some kind of scale on that amplitude axis would be useful for interpreting results. An inch of deflection at one foot would be different than a few microns at 100 meters. It's also only one unidentified camera/lens/tripod combination, stated to be typical, as if there's no significant deviation among models.

    Interesting, but not enough info to be actually useful.

    Lee

  6. #66

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    Quote Originally Posted by BetterSense View Post
    I'm saying, that if the laser is attached to the camera, the dot is never going to be blurred, regardless of how shaky the camera is. If the camera moves, the dot will also move. Think about it. You need to photograph something that's external to the camera if you want to see if the camera is shaking.
    Oh man, now I have to think? It's making my brain sweat already. But I finally get it.
    Heavily sedated for your protection.

  7. #67
    Paul Goutiere's Avatar
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    I bought a Hasselblad, some time ago, to get sharp photos.

    -No one told me how nice it was to just handhold the thing.
    -No one told me how (relatively) light it was.
    -No one told me how nice it was to use a prism finder like a PME-5
    -No one told me how responsive the thing is.
    -No one told me just how fantastic a 6x6 neg really is.
    -No one told me how spontaneous you can be with the thing.

    What they did tell me was:

    -Tripod mount, always
    -Use remote shutter release always
    -Mirror up always
    -Be boring

    I think I'll do what feels right at the time.

  8. #68
    Sirius Glass's Avatar
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    Quote Originally Posted by Paul Goutiere View Post
    I bought a Hasselblad, some time ago, to get sharp photos.

    -No one told me how nice it was to just handhold the thing.
    -No one told me how (relatively) light it was.
    -No one told me how nice it was to use a prism finder like a PME-5
    -No one told me how responsive the thing is.
    -No one told me just how fantastic a 6x6 neg really is.
    -No one told me how spontaneous you can be with the thing.

    What they did tell me was:

    -Tripod mount, always
    -Use remote shutter release always
    -Mirror up always
    -Be boring

    I think I'll do what feels right at the time.
    -Tripod mount, always <= what a bunch of crap, I have used the tripod for the Hasselblad exactly on time so far
    -Use remote shutter release always <= AGAIN what a bunch of crap, I have never used the the remote shutter release
    -Mirror up always <= the mirror goes up after I trigger the shutter and stays there until I advance the film
    -Be boring <= Hey, if you cannot figure out how to use a well engineered camera, eat your heart out but do not crap in my bed!

    What a bunch of whinny wimps!
    Grow a pair!


    I think I'll do what feels right at the time. <= I am with you

    Steve

    [Note to self: Stop holding back your opinions and emotions.]
    Warning!! Handling a Hasselblad can be harmful to your financial well being!

    Nothing beats a great piece of glass!

    I leave the digital work for the urologists and proctologists.

  9. #69
    Joe Grodis's Avatar
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    Quote Originally Posted by Sirius Glass View Post
    Mirror slap is an over exaggerated effect that has become lone battle cry urban myth propagated by RF users who have not figured out how to overcome their parallax problems and how to use a polarizer correctly on an RF camera. :o

    http://www.youtube.com/watch?v=CkKcbyh2CrA

    Steve
    Amen!
    ------------------------------------
    -Joe
    RB67, ETR, ETRS, F4, F5, FM3a, A1, AE1,
    Bronica-S, Mamiya-7, Yashica TLR, & many many Range finders
    ------------------------------------

  10. #70

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    The reason that photographers use rangefinders for street photography is because HCB did it. But HCB could have taken wonderful photographs with a Kodak Brownie if it was all he had available. But then again, if he had, we would probably be spending thousands of dollars for Brownie cameras and lenses...

    Rangefinders are simpler optically than SLRs, but focus more slowly (depending on how much practice you have had), and less precisely than SLR cameras. This difference in focus precision probably outweighs the benefit of having no mirror vibration. I tinker with lots of cameras, and more than half of the rangefinder cameras I've come across are in need of rangefinder adjustments to some degree.

    Also, though rangefinders can used wonderful lenses, this number of lenses is small, as cameras like the Leica M series have focusing lines for 4 lenses. For different lenses you may have to use an accessory viewfinder. With an SLR, you can use any lens which will fit the mount, and see what the lens sees when you look through the viewfinder.

    As for myself, I shoot a rangefinder most of the time. Not because it's better or worse than an SLR, but simply because I like to.



 

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