Re: Using a 113 gray standard in digital photo
Re: Using a 113 gray standard in digital photo
- Subject: Re: Using a 113 gray standard in digital photo
- From: tflash <email@hidden>
- Date: Thu, 21 Dec 2000 14:07:01 -0500
>
On 21 Dec 2000, at 10:41, Terence L. Wyse wrote:
>
>
> I'd still stand by that exposing for a 18% Gray Card will
>
> ALWAYS give you the correct exposure regardless of the subject matter.
I'm photographing polished platinum and white pearl earrings on gloss white
Plexiglas. The items are being back/top lit, and that little gray matte
patch is facing camera. I guarantee you if you base your exposure upon your
mid gray patch, you will have blown out highlights on your subjects. You
have to take into account the reflectance's of your subject. You will
likewise have an underexposed image if your actual subject matter is black
velvet. Basing exposure on one patch of gray should work very well if you
are photographing mid gray matte patches however. ;-)
Todd