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perisoft
Joined: 29 Aug 2007
Posts: 2920
Location: Ithaca, NY
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| Posted: Wed Apr 15, 2009 2:12 am Post subject: Can you say 'black level' ... *bitch*? |
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Yeah, that's right. I said black level.
This first shot is a rather overexposed pic of the Nokia test pattern gray ramp - I had to overexpose it a bit so the camera didn't destroy the <10ire ramp, which was the point. So, you can see the detail I'm getting on the low end here. Tracking isn't perfect, but then I haven't got a calibration camera so it's kinda tricky.
So, to get an idea how black the black level is, I put up a full black screen and did a *thirty second* exposure with my D80. Witness:
And oh, yeah - if you expand the levels absolutely as much as you can, there's an even hash of noise across the whole frame... Yee-eah! That's what I'm talkin' about! 
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bbfarmht
Joined: 27 May 2006
Posts: 1273
Location: Where the Mississippi runs east to west!!
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| Posted: Wed Apr 15, 2009 2:17 am Post subject: |
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I don't like the second pic. I can't see nuttin.
Nice Peri!!
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Adam
"Any society that would give up a little liberty to gain a little security will deserve neither and lose both"
Benjamin Franklin
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AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Wed Apr 15, 2009 3:29 am Post subject: |
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LMASO @ BB
Which one of your digital's is that Peri?
( ducks and runs ) 
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perisoft
Joined: 29 Aug 2007
Posts: 2920
Location: Ithaca, NY
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| Posted: Wed Apr 15, 2009 3:31 am Post subject: |
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| AnalogRocks wrote: | LMASO @ BB
Which one of your digital's is that Peri?
( ducks and runs ) |
Oh, hell, I can get that kind of performance out of any of them, as long as I leave 'em off. 
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AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Wed Apr 15, 2009 3:34 am Post subject: |
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You know I guess that's how you get FFTB with a digital. Turn it off!
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perisoft
Joined: 29 Aug 2007
Posts: 2920
Location: Ithaca, NY
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| Posted: Wed Apr 15, 2009 3:37 am Post subject: |
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| AnalogRocks wrote: | | You know I guess that's how you get FFTB with a digital. Turn it off! |
It would have been fun to do a direct comparison with the Mitsu HC5000 we've got up at the shop, with its iris all the way closed.
To be fair, I'd have to actually put something ELSE on the screen along with an area of full black, and see how gray the black got with something else there. With my AC 808, I have a feeling that the Mitsu would smash it utterly in anything intrascene.
But really, how often do you have part of a scene light and the other part dark, anyway? 
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AnalogRocks
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Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Wed Apr 15, 2009 3:39 am Post subject: |
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Beats me, as long as sh!t is blowing up and cars are flying by it doens't matter.
Of course, then I have to go inside my place to watch the projector.
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r.bauer
Joined: 08 Apr 2006
Posts: 280
Location: The Netherlands
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| Posted: Wed Apr 15, 2009 10:05 am Post subject: |
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Take a high ansi-contrast scene from The Dark Knight, where Morgan freeman is talking in the well lit office and see what's left of it.
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