Results 1 to 4 of 4

Thread: Velvia 50 - reciprocity failure

  1. #1
    Member
    Join Date
    Jun 2003
    Location
    London, United Kingdom
    Posts
    596

    Default Velvia 50 - reciprocity failure

    Hi!
    I need some help on reciprocity failure.... According to Fuji's Velvia 50 datasheet if I'm shooting for 4 seconds, apart from the CC filter I need to add 1/3 stop increase in the aperture. Must this be the case or can I extend the shutter speed? Both ways can get the same amount of light to the film right?

    Ilford Delta 400 (B&W film) lists it purely as an increase in shutter speed only. Or am I comparing apples to oranges here?

    BTW, reason to not want to increase 1/3 stop in the aperture side is the need for the DOF @ F22.

    Thanks!

    Alvin

  2. #2

    Default Reciprocity?

    Hi Alvin,

    I believe you can keep your DOF n drag d shutter by 1/3 stop..

  3. #3

    Default

    The CC filter is because Velvia turns greenish when exposed beyond 4 sec. I have had ugly green looking shots of Sentosa at night

    Add 1/3 stop can be done by opening the aperture or increasing the exposure by lowering shutter speed. Both will work. I usually bracket a little (1/2 stop up and down).

  4. #4
    Member
    Join Date
    Jun 2003
    Location
    London, United Kingdom
    Posts
    596

    Default

    Thanks mates i'll try that!

    Alvin

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
  •