I am not comparing Efke 25 with Efke KB or PL 100, but Efke 25 with (for example) Tri-X 320.
I mean what I wrote. Efke 25 has a greater sensitivity to green and red (compared to blue) than Tri-X 320 film. Can you show me different information? Have you ever tried to develop Efke 25 under red safelight?
I appreciate the possible correction, but Efke's chart does not give the vertical scale we both need to make our points. I could point to relative comparisons, but we just plain need the correct Efke data.
I read the statement that Super-XX was the last "thick" emulsion film produced. All others after it were the "new" thin coating philosophy. Does anyone using Super-XX have any data that compares the coating thickness of it to modern films?
Your experience? You said that Efke 25 is red-blind, and I asked if you have ever developed it under red safelight. You clearly have not or you wouldn't dare say that.
I wasn't born yesterday.
I develop all my sheet film by inspection. For PL25 I use a red safelight, for all others a weak green one.
I have also used R50 for portraits, and seen red lips come out as black.
The vertical scale on the sensitivity charts is irrelevant - compare 25 and 50 with the 100! The sensitivity of 25 and 50 drop to zero at about 630nm, the KB100 goes to about 680nm, PL100 a little less but with higher sensitivity around 640.
Try using EFKE 25 withh a dark red filter. It should be easy to see if it comes out darker than expected from "standard" filter factors, or entirely blank.
I develop all
The vertical scale on the sensitivity charts is irrelevant - compare 25 and 50 with the 100! .
For gosh sake, how many times are you going to try change the issue? The comparison was 'old' style (efke 25) compared to Tri-X! The two charts given in that case were different - Kokak had vertical metrics and Efke had none!