Results 1 to 5 of 5

Thread: question on f-stop/ aperture

  1. #1
    Member
    Join Date
    Jun 2002
    Location
    somewhere over the rainbow
    Posts
    219

    Default question on f-stop/ aperture

    i am sooooo confused.

    could someone clarify if a big f-stop means a small aperture eg. f/22, and vice-versa?

    is there any way to calculate the estimated shutter speed if shooting in aperture priority? I for 1 don't really have steady hands as do most people.( too many blur pictures too mention :P)

    tia!

  2. #2
    Member
    Join Date
    Apr 2002
    Location
    In Paradise
    Posts
    546

    Default Re: question on f-stop/ aperture

    Originally posted by kristlbel
    i am sooooo confused.

    could someone clarify if a big f-stop means a small aperture eg. f/22, and vice-versa?

    is there any way to calculate the estimated shutter speed if shooting in aperture priority? I for 1 don't really have steady hands as do most people.( too many blur pictures too mention :P)

    tia!
    Basically the diameter of the aperture= focal length/f value.

    Meaning a larger f value will give you a smaller diameter. So a bigger f value means a smaller aperture and vice versa.

    http://www.mav-magazine.com/Apr2000/page25.html

  3. #3

    Default

    Aperture means lens opening. Nowaday with new Auto SLR camera, we can't see the lens opening but with old manual camera, you can see the lens is opening or closing by turing the aperture ring.

    If you want bigger lens opening(aka bigger aperture), you need to decrese your aperture value or F number. If you want smaller lens opening(aka smaller sperture), you need to increase your aperture value or F number.

    So to conclude :

    Bigger F number = smaller lens opening
    Smaller F number = bigger lens opening

    Hope this help.
    Objection !!!

  4. #4
    Senior Member
    Join Date
    Oct 2002
    Location
    Behind the viewfinder...
    Posts
    5,851

    Default

    Trivia:

    1) f3.5 - Big or small aperture?

    2) f16 - Big or small aperture?

    Answer:

    1) Big aperture opening (the common number of lens opening now), therefore small number

    2) Small aperture opening , therefore big number..

    works in opposite ways

  5. #5

    Default

    when they say f16... it simply means reciprocal of 16 = 1/16
    f3.5 = 1/3.5

    certainly 1/3.5 is bigger than 1/16

    much clearer?

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
  •