[chrisreeves]

EDIT: Typo in my title - should have read "How did Art get 1925 lumens out of the 1100ES Sony?"

Sorry if this is old discussion, but I thought the Sony uses an optical filter to get DCI, which supposedly cuts light output by 30%.

But in his review he said:

"Maximum Brightness measured was Reference mode, zoom at wide angle, color space set to DCI. That worked out to 1925 lumens, just slightly less than the 2000 lumens claimed."

Even if uncalibrated - if the Sony puts out 2000 lumens at its maximum possible setting, wouldn't putting an optical filter in the path take you down to 1,400 lumens?

Later he said that DCI will add lumens, not take them away - was this just a typo?

"DCI color will add a couple hundred more lumens, but since we don’t have any available DCI content at this time, that’s a “future thing.”

http://www.projectorreviews.com/sony/review-sony-vpl-vw1100es-4k-projector-performance/

 

[12GAGE]

My vote would be a typo of some sorts. On my unit, with the filter engaged there is a noticeable drop in brightness. I would estimate 20-25 % honestly.

 

[Ron Jones]

The reported higher lumens case was for Reference picture mode when setting the projector to use DCI color apace vs. rec. 709. These were not calibrated modes. If you look at the brightness table that shows the various picture modes with the out of the box brightness the "Cinema Digital" mode only had 750 lumens and a color temp of 6128 with Reference mode when set for DCI color space measured 1711 lumens at mid-zoom position). Clearly these are not equal and perhaps the DCI P3 color space is not actually achieved in Reference mode even when set to DCI color space. Perhaps some VW1000/VW1100 owner can see check what happens when they select DCI color space in Reference picture mode. I suspect the DCI color filter is not actually moved into the light path in Reference mode even when you set the color space to DCI.. As far as I know, Mike who does the measurements for Art's reviews, did not attempt to calibrate for DCI-P3, so only the out of the box lumens are being reported.

 

[mark haflich]

I just retired my projector for tonight at the end of the MD/Conn women's semi final game. I will check it tomorrow but I really do not know why any of this should matter. Using the filter the light output will drop by about 30% when calibrated to P3 over no filter at rec 709. and I will not try and find my light meter to measure because I just don't care at this point with no DCI sources available to me at this time. Tomorrow I will use my projector to view every minute of the Wisc/Duke men's final game. This is why I have a HT and my Sony. I do want to watch The Waiting Game. Maybe pay per view tomorrow.

 

[12GAGE]

Thanks Ron. I believe that sheds some light on the situation. I can confirm that in Reference mode the optical filter does not engage when set to DCI color space. It seems to replicate the P3/DCI color space fairly well but without measurement there is no way to confirm.

*In certain modes however, setting the DCI colorspace will engage the filter. I tend to do most of my viewing now in the Reference mode.

 

[RLBURNSIDE]

EDIT: Typo in my title - should have read "How did Art get 1925 lumens out of the 1100ES Sony?"

Sorry if this is old discussion, but I thought the Sony uses an optical filter to get DCI, which supposedly cuts light output by 30%.

But in his review he said:

"Maximum Brightness measured was Reference mode, zoom at wide angle, color space set to DCI. That worked out to 1925 lumens, just slightly less than the 2000 lumens claimed."

Even if uncalibrated - if the Sony puts out 2000 lumens at its maximum possible setting, wouldn't putting an optical filter in the path take you down to 1,400 lumens?

Later he said that DCI will add lumens, not take them away - was this just a typo?

"DCI color will add a couple hundred more lumens, but since we don’t have any available DCI content at this time, that’s a “future thing.”

http://www.projectorreviews.com/sony/review-sony-vpl-vw1100es-4k-projector-performance/

I'd love to get my hands on such a Rec 709 -> DCI P3 color conversion filter. Does Sony sell them to consumers directly?

I'm sure many projector aficionados in the 4K UHD Bluray era are going to be interested in trying it too, assuming they can live with the lumens loss (which I can easily afford).