Site Sponsors
Results 1 to 4 of 4

Thread: Photo Pills and Medium Format

  1. #1
    Member
    Join Date
    Dec 2011
    Location
    North Dakota
    Posts
    171
    Post Thanks / Like
    Images
    3

    Photo Pills and Medium Format

    Does anyone use the Photo Pills App for calculations? I have a question on the DOF calculator on the app. When you are using it for DOF with the IQ180 and you put in the focal length, does it compensate for the Focal Length of the IQ180 or does it expect you to put in the 35mm lens equivalent Focal Length?

    Thanks,
    Mark

  2. #2
    Member
    Join Date
    Dec 2012
    Posts
    81
    Post Thanks / Like

    Re: Photo Pills and Medium Format

    i dont know the app, but...

    shouldn't it be easy to compare the results for different bodys combined with the same focal lengths? you should know whats going on, if the calculated results for different bodys are the same, or not the same.

  3. #3
    Subscriber & Workshop Member GrahamWelland's Avatar
    Join Date
    Nov 2007
    Location
    Vancouver, WA
    Posts
    5,802
    Post Thanks / Like
    Images
    564

    Re: Photo Pills and Medium Format

    You should be using the actual focal length. The key value that determines acceptable DoF as far as PhotoPils is concerned is the Circle of Confusion number that is determined really by your image sensor (and output size/viewing distance). PhotoPils seems to use a very generous CoC by default of an IQ180 unless you set the visual acuity to 20:20 vision in which case you'll be closer to pixel peeping acceptable values.

    This is where these discussions go down the rat hole of acceptable DoF is determined by print size & viewing distance etc etc ... (And Photopils does include this btw).
    Last edited by GrahamWelland; 22nd September 2014 at 12:33.
    Remember: adventure before dementia!

    As Oscar Wilde said, "my tastes are simple, I only like the best"
    Likes 1 Member(s) liked this post

  4. #4
    Member
    Join Date
    Dec 2011
    Location
    North Dakota
    Posts
    171
    Post Thanks / Like
    Images
    3

    Re: Photo Pills and Medium Format

    Thanks Graham

Tags for this Thread

Posting Permissions

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