UV filter to remove bluish cast?

I26 · 22nd of June 2009 (Mon)

When shooting the last airshow I noticed most of my pics all have the same bluish look to them. Will a UV filter help combat this problem? I am looking for something worthwhile as it is for my 400L. Thanks.

Wilt · 22nd of June 2009 (Mon)

A skylight filter is what you want to try. UV is filtered by the camera...it already has a UV filter just in front of the sensor. But I rather doubt it is the need for a Skylight filter to remedy the problem.

Did you have Daylight WB set, or were you relying upon the fickle AWB setting?

Post a sample, and include EXIF data.

I26 · 22nd of June 2009 (Mon)

I have attached a sample that I only cropped in ps.

Saint728 · 22nd of June 2009 (Mon)

How about editing the photo instead of using a filter? Not sure why there are two pictures?

Take Care,
Cheers, Patrick

I26 · 22nd of June 2009 (Mon)

I only posted one, I see you posted two. I could edit it out, but I would rather get it straight from the camera. I have a hard time sometimes noticing color casts. I also would not mind some protection on the front of my 400L.

Wilt · 22nd of June 2009 (Mon)

I notice that your camera was set to AWB. It does seem bluish. Bumping the color balance via PP a small amount seems to bring it to a more neutral appearance.

Burnaby · 22nd of June 2009 (Mon)

If your photos are mostly shot in the same quadrant (like a runway approach), then a manual gray or white card reference WB would give you "faithful" results, although doing it in a crowded is easier said than done, especially if cloudy conditions are intermittent.

RDKirk · 22nd of June 2009 (Mon)

That looked like a gloomy day. It may have been a matter of the subject not getting direct sun.

Average white balance is probably the last choice you want to use. If you think you need a warming filter, just apply a CC factor right in the camera. It will apply no matter what white balance method you use.

Burnaby · 22nd of June 2009 (Mon)

For me anyway, 13:30 is still high noon for this type of photo, and my worst aircraft in flight photos are between 09:00 and 15:00, so I agree RDKirk.

siriusdogstar · 22nd of June 2009 (Mon)

yes. look at "uv-haze" filters -- some block more uv than others.

I26 · 22nd of June 2009 (Mon)

There was a low cloud ceiling that day and the sun shined through from time to time. Thanks to everyone for the advice. So setting the WB to daylight may have helped?

Jon · 22nd of June 2009 (Mon)

Looks to me like there was enough haze in the air that you really would have needed something like a Skylight 1A or even a Skylight 2 to take out the excess blue. With B&W aerial photography, the standard was a Wratten 12 deep yellow filter to cut the haze.

Saint728 · 22nd of June 2009 (Mon)

Quote:

Originally Posted by I26

I only posted one, I see you posted two. I could edit it out, but I would rather get it straight from the camera. I have a hard time sometimes noticing color casts. I also would not mind some protection on the front of my 400L.

I meant two pictures on my post. I couldn't get only one picture? I only posted the one picture but two showed up?

Take Care,
Cheers, Patrick

tdodd · 23rd of June 2009 (Tue)

It looks to me like it needs editing in any case because the contrast is very low. There is nothing even close to black in the image. A single click on the paintwork with the WB dropper had the colour fixed and then it was a matter of deepening the blacks massively, dialing up clarity and vibrance and adding a little more sharpening to get this....

(results would look better with the original file to work with, and if the original file was raw

)

Burnaby · 23rd of June 2009 (Tue)

Great PP Tim!

22nd of June 2009 (Mon)	#1
I26 Member Join Date: Aug 2005 Posts: 563 IMAGE EDITING OK	UV filter to remove bluish cast? When shooting the last airshow I noticed most of my pics all have the same bluish look to them. Will a UV filter help combat this problem? I am looking for something worthwhile as it is for my 400L. Thanks. __________________ Canon EOS 30D / Canon 430EX \| Canon BG-E2 Grip \| Canon 400mm f/5.6L \| Canon EF 70-300mm f/3.5-5.6 IS USM \| Canon EF 28-135mm f/3.5-5.6 IS USM \| Canon EF 50mm f/1.8 USM

22nd of June 2009 (Mon)	#2
Wilt Cream of the Crop Join Date: Aug 2005 Location: California Posts: 30,883 IMAGE EDITING OK	Re: UV filter to remove bluish cast? A skylight filter is what you want to try. UV is filtered by the camera...it already has a UV filter just in front of the sensor. But I rather doubt it is the need for a Skylight filter to remedy the problem. Did you have Daylight WB set, or were you relying upon the fickle AWB setting? Post a sample, and include EXIF data. __________________ Canon dSLR system, Olympus OM 35mm system, Bronica ETRSi 645 system, Horseman LS 4x5 system, Metz flashes, Dynalite studio lighting, and too many accessories to mention Keep POTN alive and well with member support http://photography-on-the.net/forum/donate.php Last edited by Wilt : 22nd of June 2009 (Mon) at 16:19.

22nd of June 2009 (Mon)	#5
I26 Member Join Date: Aug 2005 Posts: 563 IMAGE EDITING OK	Re: UV filter to remove bluish cast? I only posted one, I see you posted two. I could edit it out, but I would rather get it straight from the camera. I have a hard time sometimes noticing color casts. I also would not mind some protection on the front of my 400L. __________________ Canon EOS 30D / Canon 430EX \| Canon BG-E2 Grip \| Canon 400mm f/5.6L \| Canon EF 70-300mm f/3.5-5.6 IS USM \| Canon EF 28-135mm f/3.5-5.6 IS USM \| Canon EF 50mm f/1.8 USM

22nd of June 2009 (Mon)	#6
Wilt Cream of the Crop Join Date: Aug 2005 Location: California Posts: 30,883 IMAGE EDITING OK	Re: UV filter to remove bluish cast? I notice that your camera was set to AWB. It does seem bluish. Bumping the color balance via PP a small amount seems to bring it to a more neutral appearance. __________________ Canon dSLR system, Olympus OM 35mm system, Bronica ETRSi 645 system, Horseman LS 4x5 system, Metz flashes, Dynalite studio lighting, and too many accessories to mention Keep POTN alive and well with member support http://photography-on-the.net/forum/donate.php Last edited by Wilt : 22nd of June 2009 (Mon) at 18:22.

22nd of June 2009 (Mon)	#7
Burnaby Member Join Date: Jan 2009 Location: Vancouver, Canada Posts: 344	Re: UV filter to remove bluish cast? If your photos are mostly shot in the same quadrant (like a runway approach), then a manual gray or white card reference WB would give you "faithful" results, although doing it in a crowded is easier said than done, especially if cloudy conditions are intermittent. __________________

22nd of June 2009 (Mon)	#8
RDKirk Cream of the Crop Join Date: May 2004 Location: USA Posts: 11,519	Re: UV filter to remove bluish cast? That looked like a gloomy day. It may have been a matter of the subject not getting direct sun. Average white balance is probably the last choice you want to use. If you think you need a warming filter, just apply a CC factor right in the camera. It will apply no matter what white balance method you use.

22nd of June 2009 (Mon)	#10
siriusdogstar Member Join Date: May 2009 Posts: 268	Re: UV filter to remove bluish cast? yes. look at "uv-haze" filters -- some block more uv than others.

22nd of June 2009 (Mon)	#12
Jon Moderator Cocker Spaniel Mod Join Date: Jun 2004 Location: Kensington, MD USA Posts: 65,140	Re: UV filter to remove bluish cast? Looks to me like there was enough haze in the air that you really would have needed something like a Skylight 1A or even a Skylight 2 to take out the excess blue. With B&W aerial photography, the standard was a Wratten 12 deep yellow filter to cut the haze. __________________ Jon ---------- EOS, Powershot and Domke - it doesn't get any better than this! T90 and stuff \| F-1n, New F-1, FTb and more stuff out on loan Cocker Spaniels Maryland and Virginia activities *DC Cherry Blossoms* Image Posting Rules and Image Posting FAQ Report SPAM, Don't Answer It! (link) PERSONAL MESSAGING REGARDING SELLING OR BUYING ITEMS WITH MEMBERS WHO HAVE NO POSTS IN FORUMS AND/OR WHO YOU DO NOT KNOW FROM FORUMS IS HEREBY DECLARED STRICTLY STUPID AND YOU WILL GET BURNED.

23rd of June 2009 (Tue)	#15
Burnaby Member Join Date: Jan 2009 Location: Vancouver, Canada Posts: 344	Re: UV filter to remove bluish cast? Great PP Tim! __________________

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