Thanks for the info.

I was under the impression that I would either need to correct for the daylight-balanced B&W film when using the X-Ray (green or blue) light units or get a proper sensitometer.

Any idea why the X-Ray units also work on panchromatic film too?



Quote Originally Posted by ic-racer View Post
I tested green LED, blue LED, incandescent and xenon tube sensitometers for their ability to detect different film speeds and different percent gamma change with development change and all sensitometers gave the same normalized results. So, depending on your use, any of the 4 types could work.