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Another panasonic 100-300mm Macro Question

Discussion in 'Native Lenses' started by rijesh, Dec 26, 2011.

  1. rijesh

    rijesh Mu-43 Regular

    43
    Nov 11, 2011
    Hey all,

    I was curious about the change in minimum focusing distance and the new magnification when using the Raynox DCR-250 and the Raynox DCR-150 on the Panasonic 100-300,,.

    I know the 250 is an 8 diopter and the 150 is a 4.8 diopter.

    With the Panasonic 100-300mm what diopter would you recommend for me.

    Pictures would be great.

    Thanks
     
  2. Sammyboy

    Sammyboy m43 Pro

    Oct 26, 2010
    Steeler Country
    The Marumi DGH 330 achromat +3 diopter, will allow you a focus from the front of the lens to the subject at a distance of about 13.3" when the lens is set at infinity. This should work well with the 100-300.
     
  3. oldracer

    oldracer Mu-43 All-Pro

    Oct 1, 2010
    USA
    I'm curious. That lens is great for its intended purpose, but it is not the sharpest lens -- particularly at 300mm. So, why do people want to use it for macro work instead of using some kind of sharper M43 lens? Maybe even an adapted film camera macro lens or telephoto which could probably be had cheap?
     
  4. Sammyboy

    Sammyboy m43 Pro

    Oct 26, 2010
    Steeler Country
    I agree, there are many better lens choices for doing macro.
     
  5. Art

    Art Mu-43 All-Pro

    Mar 13, 2011
    San Francisco, CA
    Most lenses are exceptionally sharp at close distances such as min. focusing distance which is used for macro so I wouldn't worry about 100-300 being not sharp
     
  6. Sammyboy

    Sammyboy m43 Pro

    Oct 26, 2010
    Steeler Country
    I don't agree with that statement, most would be sharpest when set at infinity. The reason many lenses have floating elements is to correct for sharpness etc. when being focused on the short end of the focusing scale.
     
  7. yhbae

    yhbae Mu-43 Regular

    41
    Nov 19, 2011
    I have both 100-300 and Raynox 250. Briefly I tried this combo for the first time, but didn't take any shots. At 300mm, the focus distance appeared to be around 1ft. The magnification was quite significant - I could see textures of papers quite easily with this combo. Very hard to keep it stable hand-holding this combo + E-PL3. My 250 was able to attach to 100-300 without any adapters. Understandably, dof was really thin with the default aperture setting (f/5.6).

    Perhaps I should try to take some shots when I get a chance but its like -10degree outside... :(
     
    • Like Like x 1
  8. rijesh

    rijesh Mu-43 Regular

    43
    Nov 11, 2011
    Thanks just what I wanted to know. I have ordered the raynox 150 and am anxiously waiting its arrival. Ill consider the 250 in the future.
     
  9. yhbae

    yhbae Mu-43 Regular

    41
    Nov 19, 2011
    I got my wife to actually measure the focal distance on 100-300mm. Looks like the actual distance is a bit less than 15cm - must have given me the perception that I was more than 1ft away because the lens itself was so long, especially when it is extended.

    Raynox 250 is a +8 diopter, so according to this article, its focus distance is supposed to be around 12.5cm:

    Micro Four Thirds Camera Blog – Article: Macro photography on Micro Four Thirds - Micro Four Thirds Camera Blog

    This article appears to be pretty good as an intro read to those who are getting into m4/3 macros.
     
  10. Sammyboy

    Sammyboy m43 Pro

    Oct 26, 2010
    Steeler Country
    Here is some info from one of my previous posts:

    For those who don't know how the diopter system for close-up lenses works, here is an example. Divide 1 meter by the diopter to give the distance from subject to front of lens when the lens is set to infinity.
    There are 25.4mm in 1 inch. You can also stack where a +2 and +3 = a +5.

    +1 diopter = 1/1 = 1 meter from subject to front of lens......(39.37")
    +2 diopter = 1/2 = 500mm from subject to front of lens.......(19.69")
    +3 diopter = 1/3 = 333mm from subject to front of lens.......(13.11")
    +4 diopter = 1/4 = 250mm from subject to front of lens.......(9.84")
    +5 diopter = 1/5 = 200mm from subject to front of lens.......(7.87")