Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
07-10-2007, 07:26 PM   #1
Inactive Account

Join Date: Jul 2007
Posts: 2
I need some help, WB/Exposure?

I hope this is the correct section to post this..

Hey there, I am currently needing to take pics of mixed drinks, and lots of them. I have made a 'lightbox' of my own, that works great..but I can't get the exposure/WB correct to save my life. I am using a Pentax ist DS, and for lighting i'm using two 500w lights. The pictures come out great, but the drink isn't as crisp as I'd like, and the worse problem of all is the background not being white.

If I posted a few pictures of what I took, along with all the setting information, would someone be able to help me figure this out? I'm really desperate right now, lol. Thanks in advance


07-10-2007, 09:07 PM   #2
Veteran Member
stewart_photo's Avatar

Join Date: Apr 2007
Location: Heidelberg, Germany
Posts: 1,864
I wish you had posted more details about your lightbox. Absent that, here is the best I can offer. When photographing an object against a background, the most common way to avoid dull, darker, backgrounds is to ensure the same amount of light or more (with small objects, more often preferred) is striking the background as that reaching your subject.

With small objects, the most common way to accomplish that is to use a transparent background lit with light from behind. This background can be thin cloth, the back of your lightbox (if it is the background and the back is translucent), or a piece of translucent plexiglass (a light table - look it up). If done properly, this method will also help your subject "pop" from the background.

Of course, if you're getting color tints, make sure your background is truly white. Our eyes are very good at correcting minor differences in shading and color tints, all of which can show up when photographed.

Another method is to light the front of your background separately, but this is often very hard to do with small objects since some light is sure to hit your subject and/or cause unwanted reflections.

Hope that helps.


Last edited by stewart_photo; 07-10-2007 at 09:17 PM. Reason: clarification and spelling
07-13-2007, 10:15 AM   #3
Lowell Goudge's Avatar

Join Date: Jan 2007
Location: Toronto
Photos: Gallery | Albums
Posts: 15,463
In terms of setting white balance, I have made a similar comment elsewhere, which works if you have a K10D

Take a photo of your subject:

Press the function button, and select white balance. You will see a preview of the image you just took, along with the menu icons for white balance adjustment

As you adjust the white balance, the white balance in your preview changes to match your settings.

I'm sure this will get you the results you want

  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
camera, dslr, help, photography, pictures
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Help with exposure Grazy81 Troubleshooting and Beginner Help 12 08-05-2010 08:42 PM
K7 Exposure... spartan Pentax DSLR Discussion 9 12-02-2009 07:53 PM
Exposure. sebberry Troubleshooting and Beginner Help 5 11-20-2009 08:09 AM
what don't I get about exposure? FHPhotographer Pentax DSLR Discussion 34 09-11-2008 07:12 AM
Night photography with K10D - High ISO short exposure VS Low ISO long exposure pw-pix Pentax DSLR Discussion 10 02-03-2008 01:37 AM

All times are GMT -7. The time now is 08:26 PM. | See also:, part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]