question on f-stop/ aperture

kristlbel · 18th November 2002

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!

NitroTech · 18th November 2002

Quote:

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

ninelives · 18th November 2002

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.

SniperD · 18th November 2002

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

aesthetic · 20th November 2002

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?

18th November 2002	#1
kristlbel Member Join Date: Jun 2002 Location: somewhere over the rainbow Posts: 226	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!

18th November 2002	#3
ninelives Senior Member Join Date: Jan 2002 Location: BB Posts: 2,622	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. __________________ Common citizens have common sense. Common sense is not restricted by the law

18th November 2002	#4
SniperD Senior Member Join Date: Oct 2002 Location: Behind the viewfinder... Posts: 5,954	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 __________________ EYE-DEAS

20th November 2002	#5
aesthetic Member Join Date: May 2002 Posts: 143	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?