picture clarity

svsrao · 04-29-2011, 06:10 PM

when i'm using my SMC Pentax 300/4MF lens on my K200D, i'm getting a pink-halo
over the white subjects. can anyone let me know how to correct it?

JohnBee · 04-29-2011, 07:08 PM

Sounds like a familiar problem, but without seeing an example of what's going on, its going to be rather hard to figure out the cause.

Can you take a sample shot of the phenomenon and post your settings along with it?

**manishved** · 04-29-2011, 07:18 PM

A picture is worth a million words!

svsrao · 04-30-2011, 03:06 AM

i'm posting a pic which shows the pink-halo over the bird.

**Ash** · 04-30-2011, 04:33 AM

Chromatic aberration.
Are you shooting wide open? That would make the CA effect worse.
Stop down to at least f/5.6 and you may see this essentially disappear.
See here: Chromatic aberration - Wikipedia, the free encyclopedia, Correcting and Preventing Chromatic Aberration | Tutorial9 and Chromatic Aberration: Optical: Glossary: Learn: Digital Photography Review

svsrao · 04-30-2011, 07:45 AM

hi Ash & Wheatfield
thanks a lot for the information. shall try next time. let me see.

04-29-2011, 06:10 PM	#1
svsrao Junior Member Join Date: Apr 2010 Location: HYDERABAD Photos: Gallery \| Albums Posts: 38	picture clarity when i'm using my SMC Pentax 300/4MF lens on my K200D, i'm getting a pink-halo over the white subjects. can anyone let me know how to correct it?

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04-29-2011, 07:08 PM	#2
JohnBee Veteran Member Join Date: Sep 2008 Location: Newrfoundland Photos: Albums Posts: 4,667	Sounds like a familiar problem, but without seeing an example of what's going on, its going to be rather hard to figure out the cause. Can you take a sample shot of the phenomenon and post your settings along with it?

04-29-2011, 07:18 PM	#3
manishved Loyal Site Supporter Join Date: Mar 2008 Location: N. Calif Photos: Gallery \| Albums Posts: 3,652	A picture is worth a million words!

04-30-2011, 03:06 AM	#4
svsrao Junior Member Join Date: Apr 2010 Location: HYDERABAD Photos: Gallery \| Albums Posts: 38 Original Poster	i'm posting a pic which shows the pink-halo over the bird.

04-30-2011, 04:33 AM	#5
Ash Loyal Site Supporter Join Date: Mar 2007 Location: Toowoomba, Queensland Photos: Gallery \| Albums Posts: 23,920	Chromatic aberration. Are you shooting wide open? That would make the CA effect worse. Stop down to at least f/5.6 and you may see this essentially disappear. See here: Chromatic aberration - Wikipedia, the free encyclopedia, Correcting and Preventing Chromatic Aberration \| Tutorial9 and Chromatic Aberration: Optical: Glossary: Learn: Digital Photography Review

04-30-2011, 07:45 AM	#6
svsrao Junior Member Join Date: Apr 2010 Location: HYDERABAD Photos: Gallery \| Albums Posts: 38 Original Poster	hi Ash & Wheatfield thanks a lot for the information. shall try next time. let me see.