Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
08-22-2011, 02:39 AM   #1
New Member




Join Date: Jul 2009
Location: Tartu, Estonia.
Posts: 21
K7 depth of field settings

Now I remember how stupid it feels to be a total n00b.

Well, I upgraded from K20 to K7 and what a great step it was.
But now recently I found myself in desperate need of DOF-preview and it takes a preview picture. On K20 it was pssible to have it step down the lens to selected aperture and view it directly through the viewfinder. And I'm absolutely certain that the option is there in the K7, too.
The question is - where?!?
I've searched through the menu and managed not to find it. Damnit. Need help.

08-22-2011, 02:55 AM   #2
New Member




Join Date: Jul 2009
Location: Tartu, Estonia.
Posts: 21
Original Poster
Oh. Hell. Found it. On the 1.3 menu (live view stuff) you have to go to digital preview and switch it off. I previously unchecked the histogram and dark/light area options under the ddof menu hoping it would do it, but in reality you just have to klick ok button on the "on" selection and select off(optical preview). At least I found it myself
So the thread can be locked.
And if anyone finds themselves in the same trouble ever again they can search this thread and not make a fool out of themselves on my account

Cheers.
08-22-2011, 03:02 AM   #3
Site Supporter
Site Supporter
Ex Finn.'s Avatar

Join Date: Nov 2007
Location: Southern Maryland. Espoo. Kouvola.
Photos: Gallery | Albums
Posts: 7,960
You could pull the on-off lever to the "DOF" preview position and stop down the lens that way?.
08-22-2011, 04:26 AM   #4
Veteran Member
aurele's Avatar

Join Date: Jan 2011
Location: Paris, France
Photos: Albums
Posts: 3,217
the DOF preview is on the same lever that allow the "OFF" "ON". In fact it's just after the "ON", see the small symbol that look like a circle with blade

08-22-2011, 10:00 AM   #5
New Member




Join Date: Jul 2009
Location: Tartu, Estonia.
Posts: 21
Original Poster
Yup, that's the old news
The same on-off lever function was there on k20D, too. And that's what I was looking for. (As a matter of fact on k20 the same lever was configurable to start the live view and something else, too..)
The latest news is, that you can set the K7 camera to take a DOF-test picture when pulling the on-off lever to the DOF-area. On my specimen this
was turned on and I wanted to get rid of that (IMHO it sucks) and this was kind of tricky.
But thanks anyway for trying to be patient

Cheers.
08-25-2011, 09:21 PM   #6
Forum Member
zerodaze's Avatar

Join Date: Aug 2009
Location: Arizona
Posts: 57
For the life of me, about 50% of the time using the DOF setting with the On-Off switch, I end up turning the K-7 off. I am a dope that way.
08-25-2011, 11:19 PM   #7
Veteran Member




Join Date: Jul 2008
Location: Var, South of France
Photos: Albums
Posts: 1,074
Be aware that the stock focus screen does not depict an accurate DoF at extreme apertures...
For instance, it cannot accurately render a f/1.4 DoF, and is limited to around f/2...

Just try it: do a DoF preview at f/2 with a f/1.4 lens, you'll see no differences at all in the viewfinder.
Moreover, at f/1.4, what you see in the viewfinder is wholly different from what you got in the final image...

08-26-2011, 09:11 PM   #8
Senior Member




Join Date: Nov 2009
Location: Vancouver
Photos: Gallery
Posts: 111
QuoteOriginally posted by dlacouture Quote
Be aware that the stock focus screen does not depict an accurate DoF at extreme apertures...
For instance, it cannot accurately render a f/1.4 DoF, and is limited to around f/2...

Just try it: do a DoF preview at f/2 with a f/1.4 lens, you'll see no differences at all in the viewfinder.
Moreover, at f/1.4, what you see in the viewfinder is wholly different from what you got in the final image...
Does that include errors in what appears sharp in the viewfinder? I find that at wide apertures, what I perceive as in focus is actually not in certain situations.
08-27-2011, 09:11 AM   #9
Veteran Member
Marc Sabatella's Avatar

Join Date: Sep 2006
Location: Denver, CO
Photos: Gallery
Posts: 10,685
That's exactly it. When shooting at f/1.4, the viewfinder will show much more in focus than actually is. You just have to learn to anticipiate that effect and compensate, figuring out throu practice what part of what appears to be in focus will actually turn out to be.
08-31-2011, 04:33 AM   #10
Veteran Member




Join Date: Jul 2008
Location: Var, South of France
Photos: Albums
Posts: 1,074
Or you can get a Canon ee-S screen : it renders DoF accurately right down to f/1.4 (but you'll need to shim it correctly, as it needs 0.10mm less than the stock screen).
Reply

Bookmarks
  • 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!
camera, depth of field, dslr, k20, k7, photography, step
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Depth of Field etc bros Pentax K-r 13 07-29-2011 10:22 AM
K10D and depth of field rimofheaven Troubleshooting and Beginner Help 7 01-04-2010 09:21 PM
depth of field miss_alexx Troubleshooting and Beginner Help 20 12-11-2009 10:56 PM
depth of field rattrap Troubleshooting and Beginner Help 9 10-28-2009 11:20 PM
calculating the depth of field rustynail925 Troubleshooting and Beginner Help 18 10-06-2009 05:31 AM



All times are GMT -7. The time now is 10:02 AM. | See also: NikonForums.com, CanonForums.com 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?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top