Re: InfraRed Filters

[Joseph Tainter]

"The R72 effects a 720nm visible light cutoff, which is in the 
right range to slip into the bandwidth between most digital 
cameras' IR block filter and the typical sensors' ability to 
record near-IR light."

Godfrey, what is the spectrum cutoff of the IR blocking filter 
on the Pentax DSLRs?

Thanks,

Joe