Erren Franklin Posted March 24 Share Posted March 24 Hello! I've recently purchased an intervalometer for use with my Bolex H8REX4. It's the kind that uses the 1:1 drive shaft. The maker says that the exposure time is .75 sec but says that Bolex light loss from the prism means that exposure should be set to a .5 sec exposure time. I'm having a difficult time working out the math for how I should compensate for this exposure time when I set my aperture. I assume I'll need ND filters. Does anyone have any guidance here? I'd love some simple help, ie: tell me how many stops I need to compensate for, but I'm also into finally trying to understand the math so I can figure this stuff out myself in the future. Any help will be much appreciated! Thank you! Quote Link to comment Share on other sites More sharing options...
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