Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
04-03-2009, 07:25 PM   #16
Veteran Member
rparmar's Avatar

Join Date: Jan 2008
Photos: Gallery
Posts: 8,783
QuoteOriginally posted by jsherman999 Quote
Try some focus bracketing - focus fast until you see the red focus light, slow down, snap right when you see the first appearance of the green hexagon, focus all the way through to the 'end' of it's appearance, snap, focus back to about midway through it's appearance, snap. Do that several times, and find which images are spot-on sharp - after you determine that, you can always just shoot at that point in the green hexagon appearance.
Good advice, as always, from Jay. Definitely you'll have to learn to do this because at f/1.4 there's hardly any DOF but focus will still read ok over a wider range.

04-03-2009, 07:34 PM   #17
Veteran Member




Join Date: Dec 2006
Location: carpentersville, IL
Posts: 693
QuoteOriginally posted by jsherman999 Quote
Are you using the focus indicator light in the viewfinder?

Try some focus bracketing - focus fast until you see the red focus light, slow down, snap right when you see the first appearance of the green hexagon, focus all the way through to the 'end' of it's appearance, snap, focus back to about midway through it's appearance, snap. Do that several times, and find which images are spot-on sharp - after you determine that, you can always just shoot at that point in the green hexagon appearance.

Hopefully I described it OK...


.
PERFECTLY, good sir!
04-03-2009, 08:07 PM   #18
Veteran Member
Robert S Donovan's Avatar

Join Date: Mar 2009
Location: Anderson, SC
Photos: Gallery
Posts: 361
QuoteOriginally posted by vitalsax Quote
Anybody using this lens? not samyang or polar!

Isn't this a Canon "L" lens?
04-04-2009, 04:57 AM   #19
Veteran Member
pcarfan's Avatar

Join Date: Sep 2007
Location: Dayton, Ohio
Photos: Gallery | Albums
Posts: 2,960
QuoteOriginally posted by jsherman999 Quote
Are you using the focus indicator light in the viewfinder?

Try some focus bracketing - focus fast until you see the red focus light, slow down, snap right when you see the first appearance of the green hexagon, focus all the way through to the 'end' of it's appearance, snap, focus back to about midway through it's appearance, snap. Do that several times, and find which images are spot-on sharp - after you determine that, you can always just shoot at that point in the green hexagon appearance.

Hopefully I described it OK...


.
Thank you.

I am using the green hexagon, and have tweaked around with the K10D debug mode to make sure the green hexagon comes at the right time. At f1.4 there is not much play with the green hexagon to bracket around it, and at times the focus lock is unreliable as in it never locking focus under room light.

This morning, of the few shots I've taken most are in focus.....I'll see whether this improves to almost all, as in my other lenses. My FA43/1.9 is on focus at least 99% of the time. (I know that's because the camera is doing it for me ...before someone else points that out to me....)

I appreciate your help.

04-04-2009, 08:57 AM   #20
Veteran Member
jsherman999's Avatar

Join Date: Dec 2007
Photos: Gallery
Posts: 8,228
QuoteOriginally posted by pcarfan Quote
Thank you.

I am using the green hexagon, and have tweaked around with the K10D debug mode to make sure the green hexagon comes at the right time. At f1.4 there is not much play with the green hexagon to bracket around it, and at times the focus lock is unreliable as in it never locking focus under room light.

This morning, of the few shots I've taken most are in focus.....I'll see whether this improves to almost all, as in my other lenses. My FA43/1.9 is on focus at least 99% of the time. (I know that's because the camera is doing it for me ...before someone else points that out to me....)

I appreciate your help.
No problem. All of us have problems nailing focus at f/1.4 - at that aperture, even the very accurate Pentax MF focus acquisition system starts to have problems. (you should try an f/1.2 lens wide-open, whoo boy )

You could also practice by stopping down to f/2 or f/2.8, but really, very slight bracketing at f/1.4 is going to get you to a better keeper ratio eventually. It does improve with practice, but can be frustrating at first.



.
04-04-2009, 12:15 PM   #21
A Proud PENTAXER !!!
fwcetus's Avatar

Join Date: Sep 2006
Location: New England
Photos: Gallery | Albums
Posts: 1,213
QuoteOriginally posted by jsherman999 Quote
(you should try an f/1.2 lens wide-open, whoo boy )
I was surprised recently, when I used my A 50/1.2, to find that (on a K20D with a KatzEye screen) that the "shimmering" areas around the split image actually disappeared - only the split image itself (when out of focus) or the non-split image itself (when in focus) appeared - even the line that "splits the image" disappeared ! (This is not true on a 50/1.4.)
04-04-2009, 09:29 PM   #22
Senior Member




Join Date: Sep 2008
Posts: 153
QuoteOriginally posted by pcarfan Quote
However, it is really frustrating to not get the focus correct with so many shots....if i cannot improve on this, it will be off to the marketplace and I will have to get the Pentax FA77/1.8.
Does focus trapping work with the lens?
02-09-2014, 04:07 PM   #23
Veteran Member
ClinchShots's Avatar

Join Date: Mar 2012
Location: Arizona
Photos: Gallery
Posts: 437
Thinking of buying one right now

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!
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
For Sale - Sold: Vivitar Series 1 35-85mm f2.8 fast Zoom (Worldwide) rajubhai55 Sold Items 4 05-23-2010 11:41 PM
For Sale - Sold: Vivitar 85mm f/1.4 Series 1 Manual Focus pcarfan Sold Items 10 05-06-2009 01:00 PM
For Sale - Sold: Vivitar 85mm f/1.4 Series 1 Manual Focus pcarfan Sold Items 7 04-04-2009 04:49 PM



All times are GMT -7. The time now is 12:16 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