Bill, your comment about Tungsten speed rating is interesting. I keep asking myself why Tri-X Super 8 Reversal is rated at 160ASA for Tungsten and 200ASA for daylight. I never thought about b&w Tri X 35mm having two different ratings as I thought it was panchromatic. Is this related to the selenium meter sensitivity that you mention (which I guess many Super 8 cameras, like mine have) or another factor?
Originally Posted by Bill Burk
Thanks for showing us the graph. It looks fascinating and satisfyingly methodical. Your description kind of makes sense but I'm afraid I still find it hard to read it without the background knowledge...
You comments on the Weston make me think that mine is working within acceptable limits and I will carry on with the 18% grey difference in mind when metering but probably rely on the incident reading until my results tell me differently. I'm testing with a Stouffer zone wedge step as my guide.
Last edited by mr.datsun; 02-23-2013 at 07:14 AM. Click to view previous post history.