CA or color fringing in pentax da 50mm f1.8

andri · 07-13-2013, 06:23 PM

First of all, thanks much for all ur help with my queries. I m loving my k30 n pentax color more each day

still have nikon but more for back up now.

Now, i have the da50mm f1.8. I noticed quiet a bad CA or green/magenta fringing around contrasty area. Read around some reviews n some sites said CA is good for this lens but some said bad. Hmmmm... Am i getting a bad copy? Never noticed CA in my 50mm nikon lens (i m an amateur n not pixel peeper), but with my da50mm straight out i can tell around my wife's hair with backlit background or even in smoke with dark background. 2 cents please? Thanks very much.

**Billy Joe** · 07-13-2013, 06:26 PM

Originally posted by andri

First of all, thanks much for all ur help with my queries. I m loving my k30 n pentax color more each day

still have nikon but more for back up now.

Now, i have the da50mm f1.8. I noticed quiet a bad CA or green/magenta fringing around contrasty area. Read around some reviews n some sites said CA is good for this lens but some said bad. Hmmmm... Am i getting a bad copy? Never noticed CA in my 50mm nikon lens (i m an amateur n not pixel peeper), but with my da50mm straight out i can tell around my wife's hair with backlit background or even in smoke with dark background. 2 cents please? Thanks very much.

Let me be the first to ask you to post some examples to see how bad it is?

Are you shooting Jpeg? Raw?

andri · 07-13-2013, 06:39 PM

Originally posted by Billy Joe

Let me be the first to ask you to post some examples to see how bad it is?

Are you shooting Jpeg? Raw?

Green fringe arnd wife's hair:

andri · 07-13-2013, 06:40 PM - **1 Like**

Magenta fringe around the smoke:

Attached Images

andri · 07-13-2013, 06:41 PM

They're raw i think. I shoot both raw n jpeg. Thanks

Adam · 07-13-2013, 06:48 PM

Looks like the CA's there because of the OOF area. That's fairly typical, I'd say.

**Aristophanes** · 07-13-2013, 07:02 PM

That's average for any lens.

**Billy Joe** · 07-13-2013, 08:53 PM

Originally posted by Aristophanes

That's average for any lens.

Wow, if that is average for any lens... I am almost afraid to go back and look at my photos...

I remember I never saw PF until someone else pointed it out,,, then I saw it everywhere!

I dont think I have seen this green in hardly any of my lenses, but now I am afraid to look.

**filoxophy** · 07-13-2013, 09:45 PM

Um, the shot of the (birthday cake?) smoke was ridiculously awesome. CAs were the last thing on my mind. For what that's worth.

icywindow · 07-13-2013, 09:55 PM

Yep, that's bokeh fringing and common on lenses. It clears up in the OOF as you stop down to f4.
Great shot of the birthday candle smoke, that's a keeper!

Tanzer · 07-13-2013, 09:56 PM

Looks pretty typical to me.

Originally posted by andri

i m an amateur n not pixel peeper ....

Well, with modern large monitors, we have all become pixel peepers.

I once pointed out some purple fringing to my 5-year old a few months ago and now she is always pointing it out in all my wide-aperture shots.

It's like a game to her.

andri · 07-13-2013, 10:16 PM

Thanks very much for ur inputs. I personally nver paid attention til the green fringe on the hair. Now i spotted them in my other pics include nikons ones which i never observed b4.
Thanks again

Giklab · 07-14-2013, 12:21 AM

Yeah, once you notice it you see it all the time. It's bad enough having it in images, but I wear glasses and also see it in IRL all the time (CA though, no bokeh fringing... yet

).

carrrlangas · 07-14-2013, 02:12 AM - **1 Like**

the cake shot is awesome!

**Kerrowdown** · 07-14-2013, 08:54 AM

Originally posted by andri

Green fringe arnd wife's hair:

It's a really simple quick fix in PP with ACR and probably most other PP software, don't worry too much.

07-13-2013, 06:23 PM	#1
andri New Member Join Date: Jun 2013 Photos: Albums Posts: 13	CA or color fringing in pentax da 50mm f1.8 First of all, thanks much for all ur help with my queries. I m loving my k30 n pentax color more each day still have nikon but more for back up now. Now, i have the da50mm f1.8. I noticed quiet a bad CA or green/magenta fringing around contrasty area. Read around some reviews n some sites said CA is good for this lens but some said bad. Hmmmm... Am i getting a bad copy? Never noticed CA in my 50mm nikon lens (i m an amateur n not pixel peeper), but with my da50mm straight out i can tell around my wife's hair with backlit background or even in smoke with dark background. 2 cents please? Thanks very much.

07-13-2013, 06:39 PM	#3
andri New Member Join Date: Jun 2013 Photos: Albums Posts: 13 Original Poster	Originally posted by Billy Joe Let me be the first to ask you to post some examples to see how bad it is? Are you shooting Jpeg? Raw? Green fringe arnd wife's hair: Attached Images

07-13-2013, 06:48 PM	#6
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,595	Looks like the CA's there because of the OOF area. That's fairly typical, I'd say. Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating or purchasing one of our Pentax eBooks. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

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07-13-2013, 06:26 PM	#2
Billy Joe Site Supporter Join Date: Jun 2013 Posts: 374	Originally posted by andri First of all, thanks much for all ur help with my queries. I m loving my k30 n pentax color more each day still have nikon but more for back up now. Now, i have the da50mm f1.8. I noticed quiet a bad CA or green/magenta fringing around contrasty area. Read around some reviews n some sites said CA is good for this lens but some said bad. Hmmmm... Am i getting a bad copy? Never noticed CA in my 50mm nikon lens (i m an amateur n not pixel peeper), but with my da50mm straight out i can tell around my wife's hair with backlit background or even in smoke with dark background. 2 cents please? Thanks very much. Let me be the first to ask you to post some examples to see how bad it is? Are you shooting Jpeg? Raw?

07-13-2013, 06:40 PM - 1 Like	#4
andri New Member Join Date: Jun 2013 Photos: Albums Posts: 13 Original Poster	Magenta fringe around the smoke: Attached Images

07-13-2013, 06:41 PM	#5
andri New Member Join Date: Jun 2013 Photos: Albums Posts: 13 Original Poster	They're raw i think. I shoot both raw n jpeg. Thanks

07-13-2013, 07:02 PM	#7
Aristophanes Site Supporter Join Date: Jul 2008 Location: Rankin Inlet, Nunavut Photos: Albums Posts: 3,948	That's average for any lens.

07-13-2013, 08:53 PM	#8
Billy Joe Site Supporter Join Date: Jun 2013 Posts: 374	Originally posted by Aristophanes That's average for any lens. Wow, if that is average for any lens... I am almost afraid to go back and look at my photos... I remember I never saw PF until someone else pointed it out,,, then I saw it everywhere! I dont think I have seen this green in hardly any of my lenses, but now I am afraid to look.

07-13-2013, 09:45 PM	#9
filoxophy Site Supporter Join Date: Jul 2012 Location: Albuquerque Posts: 1,132	Um, the shot of the (birthday cake?) smoke was ridiculously awesome. CAs were the last thing on my mind. For what that's worth.

07-13-2013, 09:55 PM	#10
icywindow Veteran Member Join Date: Mar 2011 Photos: Gallery \| Albums Posts: 303	Yep, that's bokeh fringing and common on lenses. It clears up in the OOF as you stop down to f4. Great shot of the birthday candle smoke, that's a keeper!

07-13-2013, 09:56 PM	#11
Tanzer Veteran Member Join Date: Mar 2012 Location: Perrineville, NJ Posts: 1,375	Looks pretty typical to me. Originally posted by andri i m an amateur n not pixel peeper .... Well, with modern large monitors, we have all become pixel peepers. I once pointed out some purple fringing to my 5-year old a few months ago and now she is always pointing it out in all my wide-aperture shots. It's like a game to her.

07-13-2013, 10:16 PM	#12
andri New Member Join Date: Jun 2013 Photos: Albums Posts: 13 Original Poster	Thanks very much for ur inputs. I personally nver paid attention til the green fringe on the hair. Now i spotted them in my other pics include nikons ones which i never observed b4. Thanks again

07-14-2013, 12:21 AM	#13
Giklab Veteran Member Join Date: Jan 2012 Location: Slovenia Photos: Gallery Posts: 2,182	Yeah, once you notice it you see it all the time. It's bad enough having it in images, but I wear glasses and also see it in IRL all the time (CA though, no bokeh fringing... yet ).

07-14-2013, 02:12 AM - 1 Like	#14
carrrlangas Veteran Member Join Date: Mar 2012 Location: Joensuu (Finland) Photos: Gallery Posts: 1,761	the cake shot is awesome!

07-14-2013, 08:54 AM	#15
Kerrowdown PEG Moderator Join Date: Aug 2008 Location: Highlands of Scotland... "Hold Infinity in the palm of your hand" - William Blake Photos: Gallery Posts: 57,819	Originally posted by andri Green fringe arnd wife's hair: It's a really simple quick fix in PP with ACR and probably most other PP software, don't worry too much.