Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
08-04-2013, 05:09 AM   #16
normhead's Avatar

Join Date: Jun 2007
Location: Near Algonquin Park
Photos: Gallery | Albums
Posts: 25,827
I often shoot from a scene from f2.8 to the highest f stop available, and I'd guess I have as many times when f22 was the best image as I have when f 2.8 was the best image. Simply put, if you limit yourself to what you believe, you're going to miss out every time what you believe is a subset of what is real. The best image is not always the sharpest image. Sometimes it's the one with the most DoF. Something that in this narrow depth of field crazy forum, often gets completely overlooked.

When discussing lenses people always want to know how good the lens is wide open. I've never actually heard a person ask how good the lens is at f22 or f32. I'd say that represents a pretty clear bias.

08-04-2013, 06:30 AM   #17
Site Supporter

Join Date: Jan 2010
Location: Michigan
Photos: Gallery
Posts: 2,180
Yesterday I was at the Lineman's Rodeo finishing off a roll of iso 800 on the Canon A-1 with the FD 70~210 zoom.
So most shots were necessarily around f/16 and 1/250th or so. There were no qualms about those kind of f/ in the old days.

(Reposted) Here is the K-01 with the 18~55 kit lens at 18mm
at f/8:

at f/22

The diffraction is certainly apparent in a full screen side-by side
08-04-2013, 07:18 AM   #18
Veteran Member

Join Date: Nov 2010
Location: San Diego, CA
Posts: 360
macro, long shutter, maximum DOF, ect.. there's some use, brian peterson suggest it a lot in his videos "aka f22 club".
08-04-2013, 07:47 AM   #19

Join Date: Jun 2008
Location: Flyover America
Posts: 4,475
QuoteOriginally posted by normhead Quote
I've never actually heard a person ask how good the lens is at f22 or f32.
f/22 is there for the same reason f/2.0 is there - they both have a purpose.

08-04-2013, 12:45 PM   #20
Site Supporter
Aristophanes's Avatar

Join Date: Jul 2008
Location: Dartmouth, Nova Scotia
Photos: Albums
Posts: 3,922
QuoteOriginally posted by Digitalis Quote
As the actor Michael Caine once said " you eventually get to the point where you have to say f*ck it, I don't care! and just get the job done"
I cannot believe a quote from Michael Caine is being used to such effect.
08-04-2013, 03:46 PM   #21
Pål Jensen's Avatar

Join Date: Dec 2007
Location: Norway
Photos: Albums
Posts: 3,145
A couple of F:22 images taken at almost the same spot but a year between...

08-04-2013, 04:12 PM - 2 Likes   #22

Join Date: Jan 2012
Photos: Gallery
Posts: 588
The problem with most amateur togs is that they are concerned about all the technicalities of a shot but never the photo. Sharpness, noise, dynamic range and other bullcrap. A good image is a good image even if it's not sharp or noisy.
08-04-2013, 07:10 PM   #23
Just1MoreDave's Avatar

Join Date: Feb 2007
Location: Aurora, CO
Photos: Gallery | Albums
Posts: 4,859
QuoteOriginally posted by ChrisPlatt Quote
f/22 or f/32 can get you some depth of field when required with a long lens.
Using film cameras f/22 or f/32 can be handy when you don't have a ND filter.
I just took some flowing water shots this morning with the Pentax-M 120mm f2.8, which closes to f32 like a lot of the M or K telephotos. I tried f32 first, just a bit too bright at the shutter speed I wanted to use. I wanted one stop darker. A polarizer would have been enough:

This was with the Hoya ND400 filter, which gives me a lot of flexibility for shutter speed, but I had to shoot at f4. The interesting thing is that the purple fringing is not a problem at f32. The Hoya has a color cast too, not that hard to fix.

08-04-2013, 10:28 PM   #24
Site Supporter
gofour3's Avatar

Join Date: Oct 2008
Location: Vancouver, Canada
Posts: 5,339
A couple of the Pentax Super telephotos have f45, it's for DOF.


  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
dof, f/22, k-mount, pentax lens, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
What's the point of printing on canvas? robgo2 Digital Processing, Software, and Printing 31 06-19-2017 04:08 AM
K5 Sensor Stains - what's the point freddyhard Pentax K-5 22 06-09-2012 03:57 PM
What's the point of the Green Button? herzzreh Pentax DSLR Discussion 22 01-24-2008 07:09 PM
aperture ring: what's the point? WMBP Pentax DSLR Discussion 33 02-23-2007 09:56 AM
lens hoods - what's the point? WMBP Pentax DSLR Discussion 32 12-28-2006 06:26 PM

All times are GMT -7. The time now is 09:46 AM. | See also:, part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]