DPChallenge: A Digital Photography Contest You are not logged in. (log in or register
 

DPChallenge Forums >> Tips, Tricks, and Q&A >> Potentially basic aperture question...
Pages:  
Showing posts 1 - 8 of 8, (reverse)
AuthorThread
09/15/2009 08:03:08 PM · #1
It has been a while since I've been involved with the forum so I thought I'd chime in with what could be a silly question;

Is there any disadvantage to using high f stop (say f22) over a slightly lower one (say f16) if you're going for maximum DOF? I'm thinking of situations where shutter speed is not an issue.

If so, how do you know where the happy medium is?

' . substr('//images.dpchallenge.com/images_challenge/0-999/224/120/Copyrighted_Image_Reuse_Prohibited_81069.jpg', strrpos('//images.dpchallenge.com/images_challenge/0-999/224/120/Copyrighted_Image_Reuse_Prohibited_81069.jpg', '/') + 1) . '

This question comes from looking at this shot - why f/16 and not f/22?

Thanks!
09/15/2009 08:06:40 PM · #2
sharpness is what your sacrificing @ smaller apertures (greater numbers)
09/15/2009 08:09:19 PM · #3
Here is a good read: //www.bobatkins.com/photography/technical/diffraction.html
09/15/2009 08:15:23 PM · #4
Right, I thought it might be something relatively basic and embarrassing... :-)

Cheers for the link, just what I needed.
09/15/2009 08:20:12 PM · #5
I understand where the writer is coming from, great link BTW, but I've found that to a certain extent though the phenomenon is present with close-up work, it certainly is not as obvious with the more distance related shots.

I'll close that sucker down as much as I can from time to time especially when dealing with bright light and distances.

I understand the science of it, but sometimes the result is fine with the tiny apertures.

It's a trial and error thing like so much of this damned pursuit.
09/15/2009 08:24:11 PM · #6
Originally posted by NikonJeb:

I understand where the writer is coming from, great link BTW, but I've found that to a certain extent though the phenomenon is present with close-up work, it certainly is not as obvious with the more distance related shots.

I'll close that sucker down as much as I can from time to time especially when dealing with bright light and distances.

I understand the science of it, but sometimes the result is fine with the tiny apertures.

It's a trial and error thing like so much of this damned pursuit.


With wide angle lenses on cropped-sensor cameras, the loss of sharpness at infinity focus at f/22 is pronounced. I rarely use anything smaller than f/11 on the 10-22mm, and usually f/8 unless I have extreme foreground/background DOF requirements.

The longer the lens, the less of an issue this seems to be; comparatively, the good telephotos are MUCH sharper stopped all the way down than the ultra-wides are. Which is a good thing, when you consider that DOIF is a major issue a lot of the time in telephoto work.

R.
11/09/2009 08:50:50 AM · #7
Originally posted by JimiRose:

It has been a while since I've been involved with the forum so I thought I'd chime in with what could be a silly question;

Is there any disadvantage to using high f stop (say f22) over a slightly lower one (say f16) if you're going for maximum DOF? I'm thinking of situations where shutter speed is not an issue.

If so, how do you know where the happy medium is?

' . substr('//images.dpchallenge.com/images_challenge/0-999/224/120/Copyrighted_Image_Reuse_Prohibited_81069.jpg', strrpos('//images.dpchallenge.com/images_challenge/0-999/224/120/Copyrighted_Image_Reuse_Prohibited_81069.jpg', '/') + 1) . '

This question comes from looking at this shot - why f/16 and not f/22?

Thanks!


Hi!

Although we shouldn't base all our work from websites, it's good to have some basic figures from each of our lenses.
Your picture is great, and I see how you can only achieve it by deep DOF. One way of trying to minimize it is to step away a bit from the subject, so you'll increase your distance to subject.
Also (just btw) your lens sweet spot @12mm is between f/5,6 and f/8 ( //www.slrgear.com/reviews/zproducts/sigma12-24f45-56/tloader.htm ).
It isn't always so precise, but with f/22 you should notice increased softness, even in landscapes.

Cheers,
Joao

Message edited by author 2009-11-09 08:51:37.
11/09/2009 09:05:14 AM · #8
For general purposes, I like to try and keep around F7.1, but it varies depending on conditions and if I am trying to achieve something in specific with the DOF.
Pages:  
Current Server Time: 09/22/2021 06:47:55 AM

Please log in or register to post to the forums.


Home - Challenges - Community - League - Photos - Cameras - Lenses - Learn - Prints! - Help - Terms of Use - Privacy - Top ^
DPChallenge, and website content and design, Copyright © 2001-2021 Challenging Technologies, LLC.
All digital photo copyrights belong to the photographers and may not be used without permission.
Proudly hosted by Sargasso Networks. Current Server Time: 09/22/2021 06:47:55 AM EDT.