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  1. #1
    A49
    A49 is offline

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    POLL - How much resolution (lpm) you can achieve?

    I´d like to start a little poll to see what resolutions are possible for you in LF. It would be interesting to compare what is your peak result under "laboratory conditions" using a test chart and how much of that you can realize in the field. I´m aware that almost nobody will shoot test targets in the field, but perhaps you can interpolate from small details how much resultion you usually achieve outdoors or at least if your outdoor shots are nearly as sharp as the test shots or significantly less.

    It would be nice of you to use that proposed chart. If that is too much for you, but you would like to attend in the poll anyway, just fill out the fields that you like to.

    test shots

    peak resolution (lpm):

    negative format:

    lens used:

    aperture used:

    exposure time used:

    film:

    developer:

    used light (flash or lamps):


    in the field

    usually achieved percentage of your peak resolution (only a rough estimation):

    usually used lens(es):

    usually used apertures:

    usually used exposure times:

    your standard film:

    your standard developer:


    prefered light conditions (direct sunlight or shadowed sunlight or dull weather):


    Maybe we all could learn something from the contributions. Thanks in advance to all that join in.

    Best regards,
    Andreas Rudolph




    My results:


    test shots

    peak resolution (lpm): 40 lpm

    negative format: 5 x 7 inch

    lens used: Symmar-S 5.6 / 210 mm

    aperture used: f/22

    exposure time used: 20 s up to 2 minutes

    film: ADOX / ROLLEI Ortho 25 (effective speed 6 to 12 ASA)

    developer: Rodinal 1+200

    used light (flash or lamps or daylight): daylight



    in the field

    usually achieved percentage of your peak resolution (only a rough estimation): 50 % to 80 %

    usually used lens(es): Symmar-S 210 mm

    usually used apertur(es): f/22

    usually used exposure times: 10 to 3 minutes

    your standard film: ORTHO films (ADOX / ROLLEI ORTHO 25, ORWO FO1 and FO5)

    your standard developer: Rodinal 1+200 (in the tray, intermitted agitation)

    prefered light conditions (direct sunlight or shadowed sunlight or dull weather): dull weather or shadowed sunlight


  2. #2
    RalphLambrecht's Avatar
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    All my results packed into one chart attached:
    Attached Thumbnails Attached Thumbnails Resolution.jpg  
    Regards

    Ralph W. Lambrecht
    www.darkroomagic.comrorrlambrec@ymail.com[/URL]
    www.waybeyondmonochrome.com

  3. #3
    Rick A's Avatar
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    I resloved years ago to not bother myself with resolution, only results.
    Rick A
    Argentum aevum

  4. #4

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    Quote Originally Posted by ralnphot View Post
    I resloved years ago to not bother myself with resolution, only results.
    That is what I do!

    Jeff

  5. #5

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    My shots are never as sharp as I want them to be. Fortunately sharpness isn't all that matters. I had a couple of shots taken with my Perkeo II (I know, 6x6 isn't LF) printed and the prints please even though they won't bear close scrutiny.

  6. #6

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    Quote Originally Posted by ralnphot View Post
    I resloved years ago to not bother myself with resolution, only results.

    That's how I roll, too. LPM isnt too important for me; the final image is all I care about. Obviously, LPM plays a part in the final image, but so does composition, contrast, and artistic style.

    Obviously, you need the camera for the job you want. If you're doing a job that requires uber LPM, then make sure you have a setup that can deliver. If all you have is a Holga, then you need to limit yourself to what a Holga can do. I dont have a lens for my recently aquired 5x7 camera yet, but when I wont obsess over LPM when I do get shooting with it. (hell, I might even make a pinhole for it )
    "I have captured the light and arrested its flight! The sun itself shall draw my pictures!"

    -Louis Daguerre, 1839-

  7. #7
    Athiril's Avatar
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    Quote Originally Posted by ralnphot View Post
    I resloved years ago to not bother myself with resolution, only results.
    Same thing imho really.. caring about your results. Peace of mind to maximise quality potential, so you can then focus on creating your image.

  8. #8

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    Quote Originally Posted by ralnphot View Post
    I resloved years ago to not bother myself with resolution, only results.
    I should have said that although I know sharpness isn't all, I do shoot comparable lenses against each other to decide which one(s) not to use. Making these decisions doesn't require formal resolution testing. I sometimes shelve the slightly sharper lens because the not-quite-so-sharp one is sharp enough and has better contrast or is less prone to flare or is simply easier to use.

  9. #9

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    47 meeelion!
    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)

  10. #10
    RalphLambrecht's Avatar
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    Quote Originally Posted by ralnphot View Post
    I resloved years ago to not bother myself with resolution, only results.
    That's all well and good, and many will agree with you. However, it seems to be important to the OP. So, let's deal with his question.

    That said, I don't think sharpness is the only criterium either, but I'm always turned off by images that are not as sharp as they could be when they could be improved by sharpness. I'm well aware, unsharpness can be a creative tool (many good examples in the APUG library of that), but that shouldn't become an excuse for sloppy craftsmanship.
    Last edited by RalphLambrecht; 02-06-2011 at 12:33 PM. Click to view previous post history.
    Regards

    Ralph W. Lambrecht
    www.darkroomagic.comrorrlambrec@ymail.com[/URL]
    www.waybeyondmonochrome.com

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