How are Contrast & Brightness measured on HS10? - AVS Forum
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post #1 of 11 Old 11-12-2002, 01:03 PM - Thread Starter
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Does anybody know how the specs have been arrived at by Sony? I'm curious as to whether the 700:1 contrast is arrived at by placing the filter on the lens, and then removing the filter to get the 1200 lumens brightness rating. Are we seeing an advertised brightness spec that can't be achieved with the use of the filter?

Steve
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post #2 of 11 Old 11-12-2002, 01:22 PM
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I was under the impression that the "Cinema Mode" (i.e., high contrast mode) was achieved by reducing the intensity of the lamp, not with an optical filter attached to the lense. Am I way off base here guys?

--Scott
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post #3 of 11 Old 11-12-2002, 01:57 PM
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cinema mode and filter are different. I'm pretty sure 700:1 is without any filter.
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post #4 of 11 Old 11-12-2002, 02:07 PM - Thread Starter
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I just checked their spec sheet, which confirms that the 1200 lumens rating is achieved with cinema black off. Given that disclaimer, I'm guessing they would have added such a statement if the filter was required to achieve the 700:1 contrast rating.

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post #5 of 11 Old 11-12-2002, 02:19 PM
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interesting, I would expect the specs to all be for same setting, but you may be on to something here.
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post #6 of 11 Old 11-13-2002, 08:00 AM
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According to Sony Japan's site, the HS10 is rated at 1000 lumens with Cinema Black off, and 830 with Cinema Black on.
http://www.sony.jp/products/Consumer...HS10/spec.html

I'm not sure why it's rated at 1200 lumens on other sites, and in the U.S.
Maybe these numbers are with the filter attached?
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post #7 of 11 Old 11-13-2002, 08:04 AM
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The local dealers have been informed that its actually 1200 ansi lumens, and all the spec sheets state that as well. So 1200 ansi lumens is the official number. All HS10 reviews so far have stated that its a very bright pj.
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post #8 of 11 Old 11-14-2002, 07:01 PM
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1200 lumens normal
830 lumens cinema black
Possible 1000:1 Contrast ratio with filter on in Cinema Black Mode . Which Sony more than likely doesn't want to publicize due to it being the same contrast ratio as there Top of The Line VPL-12HT .
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post #9 of 11 Old 11-15-2002, 08:22 AM - Thread Starter
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Chaz.ca, any idea what the lumens measurement drops to with the filter on? How did you learn of the 830 lumens in cinema black? Thanks.

Steve
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post #10 of 11 Old 11-15-2002, 09:17 AM
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ssj: Check out the link I posted a few replies back.
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post #11 of 11 Old 11-15-2002, 09:36 AM
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Quote:
Originally posted by Chaz.ca

Possible 1000:1 Contrast ratio with filter on in Cinema Black Mode . Which Sony more than likely doesn't want to publicize due to it being the same contrast ratio as there Top of The Line VPL-12HT .
That would be real sweet, if true. I'm sure there are more than a few members of this forum who possess the expertise and equipment to verify this.
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