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David6FL

US
1 posts

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David6FL Registered since 26th Nov 2012
Mon 26-Nov-12 04:11 PM

I use my D40 frequently to take pictures of jewelry using a white background and 5000K CFL lighting. Seemingly regardless of what settings I use, Auto or P, flash or no flash, the white background comes out a dirty gray. What am I doing wrong or what settings should I be using?

ctdrummer

Southern CT, US
237 posts

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#1. "RE: D40 Exposures" | In response to Reply # 0

ctdrummer Silver Member Nikonian since 09th Feb 2012
Mon 26-Nov-12 05:26 PM



You can try taking a reference shot of the white background using the preset white balance setting.


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JosephK

Seattle, WA, US
5795 posts

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#2. "RE: D40 Exposures" | In response to Reply # 0

JosephK Silver Member Fellow Ribbon awarded for his excellent and frequent contributions and sharing his in-depth knowledge and experience with the community in the Nikonians spirit. Nikonian since 17th Apr 2006
Tue 27-Nov-12 06:52 AM

The auto exposure system is designed to render scenes averaging to a medium gray. The camera does not know that all that white is supposed to be white. You need to use some +EV to get more light or do the same thing using manual exposure.

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Joseph K
Seattle, WA, USA

D700, D200, D70S, 24-70mm f/2.8, VR 70-200mm f/2.8 II,
50mm f/1.4 D, 70-300mm f/4.5-5.6 VR, 18-70mm f/3.5-4.5 DX

aolander

Nevis, US
3525 posts

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#3. "RE: D40 Exposures" | In response to Reply # 0

aolander Silver Member Nikonian since 15th Sep 2006
Tue 27-Nov-12 01:03 PM

"Auto or P".

Use manual or aperture priority. Expose so the histogram is up to the right side. Shoot RAW and adjust your white balance and exposure in post processing. The white background is causing the camera's meter to underexpose.

Alan

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ctdrummer

Southern CT, US
237 posts

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#4. "RE: D40 Exposures" | In response to Reply # 0

ctdrummer Silver Member Nikonian since 09th Feb 2012
Tue 27-Nov-12 08:17 PM



It wasn't clear that the images were under exposed, just that the background was gray.


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MEMcD

US
28082 posts

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#5. "RE: D40 Exposures" | In response to Reply # 4

MEMcD Moderator In depth knowledge in various areas Nikonian since 24th Dec 2007
Wed 28-Nov-12 07:15 PM

Hi Patrick,

Since the background is gray in the image and white in reality, the images are under exposed. Dialing in some positive Exposure Compensation should solve the problem.
As stated a above, when the background is white or brighter than the subject, the cameras metering system tends to under expose when Matrix or even Center Weighted metering is used. Depending on the subjects size, using Spot Metering should be more accurate.
Good Luck and Enjoy your Nikons!

Best Regards,
Marty

G