Page 1 of 3 123 LastLast
Results 1 to 10 of 23

Thread: Please Help and give me some advise

  1. #1

    Join Date
    Jul 2011
    Location
    Germany
    Posts
    120

    Please Help and give me some advise

    Hallo all LF-experts!
    Since last month Iīm trying to do LF-photography. In some of my pictures I realised some strange kind of OOFs or "distortion". Most of the pictures where taken with a Schneider 210/5,6 Symmar lens at high f-stops and with a short distance to the objects.
    There is a kind of distortion in the pic. "box and eggs" and also in the pics "beer and cigar". There is also the phenomena that the lover right part of the pictures looks somehow out of focus but the camera was lined up very straight to the table. The bottle and the glass seems to lean a bit to the left and the plate with the fuits seems to be distorted an the right side. Is it the lens? Is the lensboard bent? Or is it me.

    Please give me your advise what to do or what to check.

    The pictures are only Polaroid-proofs, so please excuse the poor quality.

    http://www.flickr.com/photos/megapic...7627626190965/

  2. #2

    Join Date
    May 2010
    Location
    BANNED in the USA!
    Posts
    455

    Re: Please Help and give me some advise

    pure perspective
    you need a longer lens
    see other related threads on this RECENT.....

  3. #3

    Join Date
    Aug 2011
    Posts
    3

    Re: Please Help and give me some advise

    Hi! And welcome to the LF side of life!

    Are you sure the bottle was 100% level on the ground glass before you took the picture? If not maybe the polaroid sheet wasnīt 100% level in the holder? Hard to tell. Shoot something completely level and make sure its level on the GG. Make 2 shots without changing anything and compare. If one is level and the other is not I would guess itīs the sheet that is not level in the holder. Also make sure that there are no movements applied if you want to shoot a test picture.

    I canīt really see anything unsharp in the lover right parts in the pictures. The picture with the apples and prunes look sharp to me...

    Nice shots btw!

    /J.S

  4. #4

    Re: Please Help and give me some advise

    "Please give me your advise what to do or what to check."

    johnielvis is right , a longer lens would help. As you get closer the distortions grow.

    Another problem will be you need to change the plane of focus to remove the distortion which will reduce your DOF. It's a dance that will make you crazy, compromise is the best solution.

    Rise cancels tilt, shift cancels swing, for distortion BUT there goes the DOF.

    Have fun with it.

  5. #5

    Join Date
    Jan 2001
    Posts
    3,962

    Re: Please Help and give me some advise

    Nice images! Don't obscess over details.
    Wilhelm (Sarasota)

  6. #6

    Join Date
    Jul 2011
    Location
    Germany
    Posts
    120

    Re: Please Help and give me some advise

    Thank you all for your reply.
    It seems, I really need a longer lens, I hope a 300mm would match.

    All objects like the bottle and the glass were in level, I leveled the table and checked the level with the GG-lines also. Therefore I was surprised by the results eg. distortion. Well, the 210mm is a 50 mm in the 35mm world and there this lens is not known for distortion. O.K. I have to make an invest in a 300mm or 360mm lens. But there is this strange OOF behavior at the lower right part of some pics. The left side is sharp in focus you can see all the structure of the wood the right side is very soft. No shift or tilt applied, the standards were absolutely in vertical (double checked) level. Maybe, the Pola-sheet was not straight in the cassette. Iīm curious to see the real film shots.

    I think I am not too critical with my first pictures but Iīm used to deliver perfect results as well in my job as in my photographing passion.

    Sorry for some mistakes in my writing my English is very poor.

    George

  7. #7

    Join Date
    Jul 2011
    Location
    Germany
    Posts
    120

    Re: Please Help and give me some advise

    I have just looked around for a longer lens and found a Rodenstock 360/6,8 Sironar N-MC.
    Do you think I can use it for table tops with my Sinar P and standard bellows or would I need some bellow extension. And is this lens useable for portraits?

    Thank you for your answers in advance.

    George

  8. #8

    Join Date
    Aug 2011
    Posts
    3

    Re: Please Help and give me some advise

    Canīt help you with that. But I have used my only lens, a Schneider 150mm f 5.6 lens for some porttraits with excellent results...it gives a pleasent bokeh.

    Donīt worry about your English...Iīm from Sweden...

  9. #9
    retrogrouchy
    Join Date
    Mar 2010
    Location
    Adelaide, Australia
    Posts
    800

    Re: Please Help and give me some advise

    The Beer and Cigar 0003-2 looks like the film plane was tilted backwards, which causes the bottom of the frame to bow outwards and the top inward. 0004-2 however looks like it's pretty straight.

    I don't see anything wrong with Box & Eggs, but that might be because the shapes are so rounded that they don't show distortions much. The box lid looks crooked; that could be due again to back tilt but it's really hard to tell with that subject.

  10. #10

    Join Date
    Jul 2011
    Location
    Germany
    Posts
    120

    Re: Please Help and give me some advise

    Hallo Polyglot!
    Your diagnosis seems plausible. The problem is, there was no tilt of the back. Both standard were upright only the axis (the monorail) was tilted forward by 25 degr. But maybe thatīs what yout mean, the filmplane shouldnīt be upright?
    Thank you for analysing.
    George

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •