Forums > Photography Talk > Keep reading about AB color inconsistancies.

Photographer

biwa

Posts: 2594

Pinole, California, US

And not just that particular brand there are others that supposed have this problem but I still want some AB400s to haul around and not worry about .

There seems to be only 2 brands that people say dont have this.

So on the ones that do have inconsistancies , how bad is it ?
Is it less noticible using light modifiers?  What is the fix for it in photoshop?  Anyone have a example of how this would look ?
Is it usually just in one or two shots out of a hundred or is it more random and unknown?   Are there chances of getting ABs that dont have this problem and its more related to a particular lot that was made?

Jul 10 08 01:19 am Link

Photographer

DaveDavis

Posts: 21946

Manteca, California, US

I have 1600s and 800s, the shift is an easy adjustment in camera raw.

edit: I see it less in the 1600s then the 800s

Jul 10 08 01:23 am Link

Photographer

Frame O Mind

Posts: 322

Albany, Georgia, US

I use a meter and set my WB for sunlight, what do you set yours too?

Jul 10 08 01:26 am Link

Photographer

Corwin Prescott

Posts: 1722

Portland, Oregon, US

custom white balance makes this a non-issue

Jul 10 08 01:27 am Link

Photographer

Hipgnosis Dreams

Posts: 8943

Dallas, Texas, US

1600's here and I haven't actually noticed it.  Mine seems pretty consistent from start to finish.

But then my sets/looks tend to be pretty quick so it's possible the lights are cooling down before they start to shift color on me.

Jul 10 08 01:28 am Link

Photographer

Frame O Mind

Posts: 322

Albany, Georgia, US

Corwin Prescott wrote:
custom white balance makes this a non-issue

QFT

Jul 10 08 01:30 am Link

Photographer

PhotoDancer

Posts: 2483

The inconsistencies occur when shooting at the lowest power settings. It may be inherent in the flash tube that is used.

If you are not shooting commercial where color matching is critical it probably does not matter at all. They say the same thing is true with the White Lightnings but I am perfectly happy with mine.

Jul 10 08 01:31 am Link

Photographer

DaveDavis

Posts: 21946

Manteca, California, US

Frame O Mind wrote:
I use a meter and set my WB for sunlight, what do you set yours too?

Yes, I set my camera on daylight and left it there. (for 2 years) I find the lights very consistent per shoot, but twice now I had a bluish cast on everything.
I just started shooting a gray/white/black card to make the corrections more precisely in PS, but the cast has not returned..

Jul 10 08 01:35 am Link

Model

StephenE

Posts: 2629

Great Neck, New York, US

Corwin Prescott wrote:
custom white balance makes this a non-issue

makes it more apparent, in that you set to one and it shifts from it, some shots are very accurate, some are not, which is correct?  Of course only matters if you want accurate to begin with, or at least want consistent all the same off factor hmm


Stephen Eastwood
http://www.NYPhotographics.com

Jul 10 08 01:39 am Link

Photographer

Æmagine

Posts: 6098

Biloxi, Mississippi, US

Try to measure the color inconsistency of almost any flash unit...  you'll likely find you have better things to do with your time. 

The ABs exhibit some inconsistency at the low end of their power scale, so turn it up and move it back.

Jul 10 08 01:39 am Link

Photographer

DaveDavis

Posts: 21946

Manteca, California, US

PhotoDancer wrote:
The inconsistencies occur when shooting at the lowest power settings. It may be inherent in the flash tube that is used.

Hmmmm that may be, but I generally shoot with one at about 7/8 to full and the other one (or 2) at 3/4.. I thought the color shift was a fluke until I started reading about it here. But thanks!! that is something I will try next time - lower power setting.  I would love to know the reason behind this!!

Jul 10 08 01:40 am Link

Photographer

Æmagine

Posts: 6098

Biloxi, Mississippi, US

DaveDavis wrote:

Hmmmm that may be, but I generally shoot with one at about 7/8 to full and the other one (or 2) at 3/4.. I thought the color shift was a fluke until I started reading about it here. But thanks!! that is something I will try next time - lower power setting.  I would love to know the reason behind this!!

It could be due to the analog control on the charging circuit.  Minor variations in charge that are only visible at the lower power settings.  Also, remember that the more light you have, the less color is apparent.  Put a gel on your light at full power then try that same gel at low power.

Jul 10 08 01:43 am Link

Photographer

Sierra-Lima

Posts: 1

Columbus, Ohio, US

PhotoDancer wrote:
The inconsistencies occur when shooting at the lowest power settings. It may be inherent in the flash tube that is used.

If you are not shooting commercial where color matching is critical it probably does not matter at all. They say the same thing is true with the White Lightnings but I am perfectly happy with mine.

It's true with nearly all strobes.  Color temp varies by a few 100 degrees from highest to lowest settings getting red-er at the low end.  For individual light, not an issue.  Worst case is if you have 2 lights, one on min, the other on max.

Jul 10 08 01:44 am Link

Photographer

Angelo Lorenzo Photo

Posts: 2094

Simi Valley, California, US

If the shift is apparent at low power settings, instead of turning up and moving back like said above, it may be more beneficial to add an ND gel to your modifier so you can still control the quality of light while cutting a stop or however much.

Jul 10 08 02:05 am Link

Photographer

Æmagine

Posts: 6098

Biloxi, Mississippi, US

Angelo Lorenzo Photo wrote:
If the shift is apparent at low power settings, instead of turning up and moving back like said above, it may be more beneficial to add an ND gel to your modifier so you can still control the quality of light while cutting a stop or however much.

That works... just trying to keep things easy

Jul 10 08 02:09 am Link

Photographer

Andrew Thomas Evans

Posts: 24079

Minneapolis, Minnesota, US

AEmagine wrote:
That works... just trying to keep things easy

and its' not as fun to say as "turn it up and move it back."

big_smile

Jul 10 08 02:32 am Link

Photographer

biwa

Posts: 2594

Pinole, California, US

DaveDavis wrote:

Hmmmm that may be, but I generally shoot with one at about 7/8 to full and the other one (or 2) at 3/4.. I thought the color shift was a fluke until I started reading about it here. But thanks!! that is something I will try next time - lower power setting.  I would love to know the reason behind this!!

This was interesting  , not new and has been posted in the dreaded lighting resource page !
http://photography-on-the.net/forum/sho … p?t=469075

Jul 10 08 02:33 am Link

Photographer

biwa

Posts: 2594

Pinole, California, US

DaveDavis wrote:
I have 1600s and 800s, the shift is an easy adjustment in camera raw.

edit: I see it less in the 1600s then the 800s

I guess thats what I was wondering , who doesnt tweak a bit in ACR or any raw converter and if thats the case its not a big deal .  But I can see if you have time constrants and want to do batch conversion it could be an issue .

Jul 10 08 02:34 am Link