| Author | Thread |
|
|
03/16/2007 12:32:50 AM · #1 |
How does a camera with a F/2.8-4.1 lense some how achieve F/7.1 at wide angle and F/8 at Telephoto in manual mode.
The camera has all sorts of stuff
- Rear Curtain flash sync
- Shutter and Aperture Priority
- External flash sync....
but with the aperture is it bullshitting or what.
Message edited by author 2007-03-16 00:33:07. |
|
|
|
03/16/2007 12:40:44 AM · #2 |
Generally, f/2.8 - 4.1 represents the maximum open aperture ratio at the min-max zoom ranges.
f/7.1 is a smaller opening, meaning the iris has closed down to change the ratio to a higher f-stop (smaller opening), completely possible therefore. Or am I misunderstanding your question?
(edit for spelling, doh!)
Message edited by author 2007-03-16 01:31:46. |
|
|
|
03/16/2007 12:43:06 AM · #3 |
AT this point its possible your right and i actually feel stupid. I just grabbed my dead point and shoot. Now as soon a I call my fatehr and have him grab the S5000 itll confirm it once again......
Yeah your right thats freakingly weird.
Thanks |
|
|
|
03/16/2007 01:04:03 AM · #4 |
No worries! No question is stupid unless asked a second or third time when not necessary. (Third time if a complex question!)
Cheers!
R. |
|
|
|
03/16/2007 01:28:49 AM · #5 |
| I had the same confusion, dont stress. |
|
|
|
03/16/2007 02:59:46 AM · #6 |
it's like when you check out the specs of a car, rarely do people bother about what is the lowest speed the car could go, the are only bothered to know how fast it is. the same concept with lenses, where people are more interested with how "fast" the lens is, which is the aperture.
Originally posted by ralfw:
Generally, f/2.8 - 4.1 represents the maximum open aperture ratio at the min-max zoom ranges. |
|
|
|
|
03/16/2007 07:38:38 AM · #7 |
Originally posted by crayon:
it's like when you check out the specs of a car, rarely do people bother about what is the lowest speed the car could go, the are only bothered to know how fast it is. the same concept with lenses, where people are more interested with how "fast" the lens is, which is the aperture.
Originally posted by ralfw:
Generally, f/2.8 - 4.1 represents the maximum open aperture ratio at the min-max zoom ranges. |
|
Sigma actually sometimes lists ONLY how slow the lense is in the specs and ONLY how fast it is in the description lol.
Message edited by author 2007-03-16 07:40:38. |
|
Home -
Challenges -
Community -
League -
Photos -
Cameras -
Lenses -
Learn -
Help -
Terms of Use -
Privacy -
Top ^
DPChallenge, and website content and design, Copyright © 2001-2026 Challenging Technologies, LLC.
All digital photo copyrights belong to the photographers and may not be used without permission.
Current Server Time: 01/02/2026 09:46:02 AM EST.
