Results 1 to 2 of 2

Thread: 4x5 Pinhole vs. 8x10 Pinhole

  1. #1

    Join Date
    Oct 2001
    Location
    Mount Horeb, WI
    Posts
    878

    4x5 Pinhole vs. 8x10 Pinhole

    I have several questions concerning pinhole cameras. I had an 8x10 and got a few interesting images using some expired 8x10 Ektachrome. My only problem with the camera was that its effective focal length was somewhere around a 95mm which was just too wide for my eyes so it has been sold. I have one of the Wanderlust cameras coming my way, and while I did find a very nice 90mm Schneider for it, I was thinking of using it as a pinhole to try a few ideas that I have in mind. My questions: if I want to print an image up to 32x40, will there be a noticeable difference? Would a print from an 8x10 pinhole be "sharper?" Does that make sense. Another question, since we are dealing with a pinhole, with a well exposed slide, am I to assume that a scan from my Epson 750 would be adequate, at least in terms of resolution. I have a fair amount of expired 8x10 and I'm trying to decide if the new Ilford 8x10 is a way I want to go, or if I should just stick with the Wanderlust when it arrives. I may end up shooting some b&w down the road also, but would be curious to know from those that have used both 4x5 and 8x10 pinholes what the practical differences would be in a final print of an image in the 32x40 size. Thanks.

  2. #2
    Jim Jones's Avatar
    Join Date
    Aug 2006
    Location
    Chillicothe Missouri USA
    Posts
    2,374

    Re: 4x5 Pinhole vs. 8x10 Pinhole

    For equal size enlargements from 4x5 and 8x10 pinhole cameras with equal angle coverage and ideally sized pinholes, the 8x10 will have more detail than the 4x5. Resolution on film is directly proportional to an optimum pinhole size. While optimum pinhole size is larger in larger cameras, the increase is only 1.4x the film size when angular coverage remains constant. Contrary to what a few "experts" have stated, an optimum size pinhole can resolve line pairs with a spacing finer than the pinhole diameter on the optical axis, if not in the corners. An Epson 750 at 2400ppi resolves much finer detail than any 4x5 pinhole camera.

Similar Threads

  1. Help on an 8x10 Pinhole Project
    By yeknom02 in forum Cameras & Camera Accessories
    Replies: 6
    Last Post: 5-Apr-2011, 06:22
  2. 8x10 pinhole
    By Bill_1856 in forum Cameras & Camera Accessories
    Replies: 3
    Last Post: 5-Sep-2004, 18:32
  3. Pinhole work with 4x5 or 8x10
    By tim atherton in forum Style & Technique
    Replies: 12
    Last Post: 25-Jun-2004, 00:12

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
  •