Replies – Forums – Al Signore

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Al Signore
October 5, 2009 at 8:09 pm in reply to: Shooting feature film soon with 2 HPX 170’s, but having some noise issues

sorry – what i meant to say was – why would opening the iris all the way introduce noise?
Al Signore
October 5, 2009 at 7:55 pm in reply to: Shooting feature film soon with 2 HPX 170’s, but having some noise issues

yeah – i don’t think that’s it – i checked the waveform for exposure and the shots were lit well….

not sure what you meant about it looking like noise but it’s really not. If it looks like noise then it IS noise, whether it’s caused by underexposure or crappy sensor, etc………

Why would opening the iris all the way introduce gain?
Al Signore
October 4, 2009 at 12:00 am in reply to: Shooting feature film soon with 2 HPX 170’s, but having some noise issues

Gain is the devil! No, using zero gain and checking the waveform on the HPX for proper exposure….

Redrock claims it loses 1/2 a stop, I think it’s closer to what you’re saying at around 1….

For most of the tests, the HPX was stopped to 2.4, a couple times it was open all the way. You think that will introduce a lot of noise?

Gonna run some more tests with the KiPro tonight….