Lets try to get this back on topic and set aside personal preferences.
Joshk
- did you use your paint on an already AR coated lens or plain glass? this may not matter but needs to be tested cause there are lots of different AR coatings or lack thereof and if people are going to spray lenses it would be good to test a few examples of both
- how durable is the coating? does tightening it up against an optic leave marks on the inside?
- any guesses if it will yellow or otherwise change color over time?
random thoughts:
TK has observed and SKV, myself and others have measured that an AR lens can actually raise Duv by a not insignificant amount. In some cases it’s almost non-existant (UCL) and in other cases it’s as much as (+0.002). An AR lens from an FW3A I measured was +0.0014 vs a plain glass. E07 was +0.002 according to SKV and +0.001 for a D4v2 AR lens
The AR coatings do not seem to effect the overall brightness very much but they do seem to be able to change the Duv by as much as what a 1/8 lee filter does. I wonder if there is any way to create an AR coating that would trend in the other direction or if this is just something ingrained in how these coatings work?