Go Back   Steve's Digicams Forums > Digital SLR and Interchangeable Lens Cameras > Pentax Lenses

Reply
 
Thread Tools Search this Thread
Old Jan 17, 2008, 1:53 AM   #1
Senior Member
 
bigdawg's Avatar
 
Join Date: Feb 2005
Location: Thach Alabama
Posts: 14,981
Default

Just checking the amount of Purple fringing or Green fringing that might occur. From 50mm to 500mm in first a 50mm increase in focal length then 100mm from there on! I always seem to get the CA while shooting towards the sun and on the edges of branches. Aperture priority mode and auto focus with the aperture set at it's widest to see if the image is too soft. You tell me is the image too soft? And the CA...Too much? Nothing done but resizing in Photofiltre...EXIF should be intact!













Dawg
bigdawg is offline   Reply With Quote
Sponsored Links
Old Jan 17, 2008, 7:45 AM   #2
Senior Member
 
bluwing's Avatar
 
Join Date: Jan 2005
Posts: 592
Default

Hi Dawg,

I really don't see any CA. I ran it thru a quick edit and it looks good. But either the lenas is dirty or your sensor is dirty......:G

It is not a softness that using a high pass sharpening won't fix and it is not that bad. at least to me, that is....

The spots really do show up when I inverted the picture...

Rudy

bluwing is offline   Reply With Quote
Old Jan 17, 2008, 2:49 PM   #3
Senior Member
 
bigdawg's Avatar
 
Join Date: Feb 2005
Location: Thach Alabama
Posts: 14,981
Default

bluwing wrote:
Quote:
Hi Dawg,

I really don't see any CA. I ran it thru a quick edit and it looks good. But either the lenas is dirty or your sensor is dirty......:G

It is not a softness that using a high pass sharpening won't fix and it is not that bad. at least to me, that is....

The spots really do show up when I inverted the picture...

Rudy
Dirty sensor..Thank you. My eyses are not what they used to be....Blower to the rescue I guess! Sorry for any incomvienience.

Dawg
bigdawg is offline   Reply With Quote
Old Jan 18, 2008, 10:48 AM   #4
Senior Member
 
mtngal's Avatar
 
Join Date: Nov 2005
Location: Frazier Park, CA
Posts: 16,056
Default

LOL! I was taking pictures of the pre-dawn light and had a big spot of dust on the sensor - big enough I could see it on the review! Much worse than yours (and it did disappear with a couple of puffs).

The CA does look very well controlled with this lens - are the pictures full frame/resized ones or 100% crops?
mtngal is offline   Reply With Quote
Old Jan 18, 2008, 12:26 PM   #5
Senior Member
 
bigdawg's Avatar
 
Join Date: Feb 2005
Location: Thach Alabama
Posts: 14,981
Default

mtngal wrote:
Quote:
LOL! I was taking pictures of the pre-dawn light and had a big spot of dust on the sensor - big enough I could see it on the review! Much worse than yours (and it did disappear with a couple of puffs).

The CA does look very well controlled with this lens - are the pictures full frame/resized ones or 100% crops?
Full frame resized JPEGS Harriet!

Dawg
bigdawg is offline   Reply With Quote
Old Jan 30, 2008, 7:55 AM   #6
Senior Member
 
Join Date: Jan 2007
Location: Mornington, Australia
Posts: 697
Default

They all look good to me.



Simon
simowills is offline   Reply With Quote
Old Jan 30, 2008, 6:41 PM   #7
Senior Member
 
bigdawg's Avatar
 
Join Date: Feb 2005
Location: Thach Alabama
Posts: 14,981
Default

simowills wrote:
Quote:
They all look good to me.



Simon
Thanks Simon!



Dawg
bigdawg is offline   Reply With Quote
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 7:31 AM.