A question on hypefocal distances.

[genotypewriter]

Thanks for that. I also was wondering what you meant. You had written "Why hasn't anyone mentioned that HFD is a highly variable value..." and yet I had mentioned that it was an inexact calculation in the previous post to yours, including a mention of the variation in the value of the maximum acceptable circle of confusion.

Yes, "CoC" gets mentioned almost every time people talk about HFD or DOF but that wasn't my point. The post you mentioned as well as the other posts at the time were trying to go in to great depth about HFD calculations. My post was merely trying to pointing out the fact that HFD values are so variable and therefore why anyone should nit pick that much to find out whether it's given from the film plane or the lens.

G, vagueness is a sin.

And the irony is funny Actually the term "variable" is quite well understood in scientific circles... of no confusion