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Making white backgrounds white?
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Apr 15, 2013 08:06:22   #
Gerylee Loc: Ontario, Canada
 
Mogul wrote:
It looks like your background is too close, and you seem to be getting a bit of vignetting.


OK. More distance between subject and background. Got it.
Thanks.

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Apr 15, 2013 08:07:14   #
jerryc41 Loc: Catskill Mts of NY
 
Gerylee wrote:
It sounds like I need to buy a separate meter. Is that what you mean when you say I cannot use TTL?

You could probably make two separate images - flowers and background, and then combine them in PS.

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Apr 15, 2013 08:08:34   #
Gerylee Loc: Ontario, Canada
 
SharpShooter wrote:
Gerylee, Yes, as you've been told, you need to overexpose the white background. You are basically attemting a "high key" shot(look on uTube). You need 3-4 lights with two on the background, crossing each other. twice as much light on the background as the subject. That will blow out the background and it HAS to come out white since there are no pixels left to produce any color. Your backgroumd histogram will be slammed to the right. But as long as your subject is properly exposed and with twice the light as the subject on the background, it WILL be white.
Gerylee, Yes, as you've been told, you need to ove... (show quote)


So, there is a name for this kind of shot. I will check out u tube.
Thanks for the tip.

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Apr 15, 2013 08:15:46   #
GoofyNewfie Loc: Kansas City
 
jerryc41 wrote:
You could probably make two separate images - flowers and background, and then combine them in PS.


We did it in one shot in the film days.
Did hundreds of product shots like this for ads.
We called them "COB's"... Cut out backgrounds.
Not hard, if you have the right tools and learn how to use them.

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Apr 15, 2013 08:29:19   #
jerryc41 Loc: Catskill Mts of NY
 
GoofyNewfie wrote:
Not hard, if you have the right tools and learn how to use them.

I like buying "the right tools," but learning how to use them is quite another matter. :D

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Apr 15, 2013 09:30:28   #
CaptainC Loc: Colorado, south of Denver
 
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Gerylee wrote:
It sounds like I need to buy a separate meter. Is that what you mean when you say I cannot use TTL?


You do not NEED a separate meter - you can do it by trial an error. Nothing wrong with that, it just takes much longer.

But in any case you need to light the subject and BG separately and using the flash TLK system cannot cope with that.

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Apr 15, 2013 10:14:08   #
steve40 Loc: Asheville/Canton, NC, USA
 
Expanding on "DO This".
PhotoShop = Adjust Lighting - Levels - Pick White Eye Dropper. Click a couple of places on the background. :)

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Apr 15, 2013 10:43:19   #
zerobeat
 
HI Mogul,

Here's so eye candy for ya.

Dale

http://www.finescalemodeling.org/

http://www.sundancecentral.org/

http://youtu.be/liQ9OPF0xAU

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Apr 15, 2013 13:12:17   #
mopinia Loc: New Jersey via Hawaii
 
Goofynewfie has the best answer. Even lighting on the background is the key. Your subject should be a few feet feet from the background. Flash should be back of subject so that no light from the flash bleeds onto your subject.

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Apr 15, 2013 21:17:57   #
imagesintime Loc: small town, mid-America
 
Gerylee wrote:
I tried for hours today to take this shot with the white background white. I tried using a grey card. I tried underexposing. I tried having separate lights to illuminate only the white background.
I tried different flash levels for the TTL flash and the 2 slave flashes. I had the two slaves flashes flash through white umbrellas. I even tried HDR. Finally, I brightened my less than satisfactory background in photoshop.

Anyone with any experience on how to make white backgrounds white, please tell me the secret.

I have attached 2 examples of post processing. One the background is more white, but at the cost of colour saturation of the flowers. The others has good saturation of the flowers but at the cost of an even less white background.

Grrrrrr. Help please.
I tried for hours today to take this shot with the... (show quote)


Here's just about everything you need to know about 'hi-key' white backgrounds.

http://www.zarias.com/white-seamless-tutorial-part-1-gear-space/

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Apr 16, 2013 01:54:34   #
marcomarks Loc: Ft. Myers, FL
 
Gerylee wrote:
I tried for hours today to take this shot with the white background white. I tried using a grey card. I tried underexposing. I tried having separate lights to illuminate only the white background.
I tried different flash levels for the TTL flash and the 2 slave flashes. I had the two slaves flashes flash through white umbrellas. I even tried HDR. Finally, I brightened my less than satisfactory background in photoshop.

Anyone with any experience on how to make white backgrounds white, please tell me the secret.

I have attached 2 examples of post processing. One the background is more white, but at the cost of colour saturation of the flowers. The others has good saturation of the flowers but at the cost of an even less white background.

Grrrrrr. Help please.
I tried for hours today to take this shot with the... (show quote)


Paintshop Pro X5, flood filled the almost white with pure white.

Flood filled all whites with 255-255-255
Flood filled all whites with 255-255-255...

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Apr 16, 2013 11:01:52   #
RC0448 Loc: Tacoma WA
 
Couldn't you just take a separate picture of only the background and set that as a custom white balance?

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Apr 16, 2013 20:21:26   #
Gerylee Loc: Ontario, Canada
 
RC0448 wrote:
Couldn't you just take a separate picture of only the background and set that as a custom white balance?


I don't know. I have to learn more about custom white balance.
Are suggesting that I take a photo of the background only set the white balance to start and then add the subject to the scene?

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Apr 16, 2013 20:28:18   #
RC0448 Loc: Tacoma WA
 
Gerylee wrote:
I don't know. I have to learn more about custom white balance.
Are suggesting that I take a photo of the background only set the white balance to start and then add the subject to the scene?


Yup... :-) I may have missed what camera you have, but, if it has a "custom white balance" function, click on that then select the picture of the wall, or whatever, and set it to that.....

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Apr 20, 2013 09:18:15   #
Gerylee Loc: Ontario, Canada
 
marcomarks wrote:
Paintshop Pro X5, flood filled the almost white with pure white.


Would you please tell me more about 'flood fill'?

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