Re: Measuring Black level

[Anonymous]

This came from the SpectraCal Forum:

Chad B:
I’m looking at an Extech 407026. It has RS232, and can be NIST. It’s stated resolution is .01 lux/fc. If it’s interfaced with CalMAN, will it’s resolution be higher? Will I be able to read .001? And will CalMAN convert the output to footlamberts? I want to read accurate black levels.

Derek Smith:
Yes it is supported by CalMAN. No the resolution is 0.01, yes CalMAN can report in fL or fC.

Here is also a link to a light meter that may fit your needs.
http://www.sperdirect.com/cgi-bin/category.cgi?item=840022&type=store

Meter # 840022 looks like it may work for you.

Specifications
Range: 40,000 fc
Resolution: 0.001/1 fc
Accuracy: ±(3% + 0.5% fs)

Hope this helps.

RayJr