Chromatic Aberration in Tamron 17-50mm

sentinel_006 · 14th January 2008

Hi, I took these 2 pictures of a yummy steak.

I noticed the blue/ purple colours on the left side of the steak. Does anyone know what causes it? Is this chromatic aberration and inherent in the Tamron 17-50mm F2.8 lens?

Lighting Condition:
Dim.
Lots of sizzling smoke from the plate. Could it be a factor?

Thanks

Shot with NIKON D80 at 2008-01-14

limonello · 15th January 2008

That doesn't look like CA to me. Are you sure you didn't get too close to the sizzling steak and get some steak juice on your lens?

Viewpoint · 15th January 2008

It's not CA. If the CA is that obvious at this size, I'll sell the lens right away!

It looks more like reflections of some distant blue light in the restaurant. I think the CA colour is more purple than solid blue.

You can easily do a test shot to see the CA -- shoot some trees at f2.8 against a bright white background (clouds, for eg), or reflections of bright sunlight off a pond or lake.

Adiemus · 15th January 2008

It's definitely not CA. As Viewpoint mentioned, it's very likely to be reflections of some blue/violet light.

blazer_workz · 15th January 2008

Definitely not CA..CA usually appears around the edges of subject..might be reflection as what Viewpoint & Adiemus have mentioned..or maybe its the flame from the grill..yum yum

sentinel_006 · 15th January 2008

Hi all,

Thanks. It's comforting to know it's not CA.

14th January 2008	#1
sentinel_006 Member Join Date: Sep 2005 Posts: 157	Chromatic Aberration in Tamron 17-50mm Hi, I took these 2 pictures of a yummy steak. I noticed the blue/ purple colours on the left side of the steak. Does anyone know what causes it? Is this chromatic aberration and inherent in the Tamron 17-50mm F2.8 lens? Lighting Condition: Dim. Lots of sizzling smoke from the plate. Could it be a factor? Thanks Shot with NIKON D80 at 2008-01-14 Shot with NIKON D80 at 2008-01-14 Last edited by sentinel_006; 14th January 2008 at 11:46 PM.

15th January 2008	#2
limonello Member Join Date: Dec 2005 Posts: 181	Re: Chromatic Aberration in Tamron 17-50mm That doesn't look like CA to me. Are you sure you didn't get too close to the sizzling steak and get some steak juice on your lens?

15th January 2008	#3
Viewpoint Member Join Date: Jan 2007 Posts: 350	Re: Chromatic Aberration in Tamron 17-50mm It's not CA. If the CA is that obvious at this size, I'll sell the lens right away! It looks more like reflections of some distant blue light in the restaurant. I think the CA colour is more purple than solid blue. You can easily do a test shot to see the CA -- shoot some trees at f2.8 against a bright white background (clouds, for eg), or reflections of bright sunlight off a pond or lake.

15th January 2008	#4
Adiemus Member Join Date: May 2004 Location: Small island.... Posts: 1,563	Re: Chromatic Aberration in Tamron 17-50mm It's definitely not CA. As Viewpoint mentioned, it's very likely to be reflections of some blue/violet light.

15th January 2008	#5
blazer_workz Member/Tangshooter Join Date: May 2006 Location: ClubSNAP Community Posts: 3,096	Re: Chromatic Aberration in Tamron 17-50mm Definitely not CA..CA usually appears around the edges of subject..might be reflection as what Viewpoint & Adiemus have mentioned..or maybe its the flame from the grill..yum yum __________________ I'm not a photographer, I'm only a cameraman. \| TangShooters