Sony VPL-vw1000 - Page 372 - AVS | Home Theater Discussions And Reviews
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post #11131 of 11139 Old Today, 02:58 AM
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Hello Mark,

i ask this before...may be you can answer me:

i Already changed to the Isco 1.25 DLP Lens.
To Stretch 1080p i use the Build in scaler of the vw 1100.

I have no pc and no Knowledge to scale nativ 4k.

So do i have to take off the Lens each Time, before i watch 4k with Mediaplayer For Exemplare netflix or Trailer in nativ 4k?

Then Lumagen brings out a nativ 4k Scaler ( 4k in + out ) later this year, i can leave the lens in the lightway right ?

Best regards dirk
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post #11132 of 11139 Old Today, 04:46 AM
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Originally Posted by Dirk44 View Post
Hello Mark,

i ask this before...may be you can answer me:

i Already changed to the Isco 1.25 DLP Lens.
To Stretch 1080p i use the Build in scaler of the vw 1100.

I have no pc and no Knowledge to scale nativ 4k.

So do i have to take off the Lens each Time, before i watch 4k with Mediaplayer For Exemplare netflix or Trailer in nativ 4k?

Then Lumagen brings out a nativ 4k Scaler ( 4k in + out ) later this year, i can leave the lens in the lightway right ?

Best regards dirk
The internal scaler can not strech 4K native material so you can not use the lens when watching native 4K 2.35: material, and when Lumagen comes with a 4K in and 4K out it will probarbly do the strech with 4K material. I say probarbly because I don´t know, send a mail to Jim Peterson and he can answer that question.

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Andreas

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post #11133 of 11139 Old Today, 05:42 AM
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Thanks for your answer Andreas.
I think we don't need the 4k Scaler before the UHD Blu Rays (incl. 4k Anamorphic Signals) comes out after IFA Sept 2015.
this means for me, that i take the lens off each time then i watch 4k Netflix

Greetings to Norway
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post #11134 of 11139 Old Today, 06:42 AM
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Originally Posted by mark haflich View Post
It depends on how you set the aspect setting on the projector. You can set it to normal where it will operate as a 3840 x 2160 chip blanking out the 4K pixels on either side (1/2 of (4096-3840) ) on either side. This will preserve the source aspect of 1.78 filling the screen vertically with the extra pixels which there is no source content anyway blanked. the scale is by a multiplier of 2 vertically and horizontally. If you set the projector aspect to 2.35 it will light all 4096 horizontally through scaling to 4096 x 2160 by a multiplier of 2.07 but the chip will not have enough vertical pixels and will clip them, i.e., you will lose a small amount vertically of what's there.
Mark, thanks for that clarification. Just curious, do you see a sharpness degradation or scaling artifacts when use the 2.35 aspect mode to scale by 2.07? The reason I'm asking this is because I'm trying to plan ahead on which anamorphic lens to go with (my throw is too short to utilize the zoom method). The 1.25x ISCO DLP lens is a perfect fit if utilize the full 4096 width, but I will probably want to use a standard 1.33x if the standard 1.78 aspect is preferred. I realize the VPL-VW1000 / 1100 wont do vertical stretch of 4k/UHD material, but I'd be using my HTPC for that anyway.
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post #11135 of 11139 Old Today, 08:53 AM
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Originally Posted by Dirk44 View Post
Thanks for your answer Andreas.
I think we don't need the 4k Scaler before the UHD Blu Rays (incl. 4k Anamorphic Signals) comes out after IFA Sept 2015.
this means for me, that i take the lens off each time then i watch 4k Netflix

Greetings to Norway
Thank you!

I had the same combination as you with the VW1100 and Isco 1.25x, I have now sold my VW1100 and the Isco is for sale on eBay. I now run the Isco 4 and Cineslide with my JVC X500 and I am waiting for the new 4K models coming this fall.

Regards
Andreas

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post #11136 of 11139 Old Today, 08:58 AM
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I just upgraded my Lumagen to a 2143, and immediately found that 2160@60Hz output is "softer" than 1080p@60Hz. Specifically, text from my cable box (that outputs 1080i@60Hz to the Lumagen) looks sharper/better when I set the Lumagen to output 1080p@60Hz than it does when I set it to output 2160p@60Hz.


Is there something simple/stupid I am missing? For example is the Lumagen's Darbee disabled for 4K output?


Thanks

Alex
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post #11137 of 11139 Old Today, 10:45 AM
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I find the 2x scale to be sharper than the 2.07 scale. I never use the aspect on the Sony set to other than normal. The Lumagen scalar is no ring and that means without the deliberately introduced ringing of other scalars including the scalar built into the projector, it will look softer.

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post #11138 of 11139 Old Today, 02:29 PM
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Originally Posted by mark haflich View Post
I find the 2x scale to be sharper than the 2.07 scale. I never use the aspect on the Sony set to other than normal. The Lumagen scalar is no ring and that means without the deliberately introduced ringing of other scalars including the scalar built into the projector, it will look softer.
Thanks Mark. I see your point about ringing. That would certainly explain why the lumagen upscaling "looks soft" compared to the Sony. I knew I was missing something "simple" . I'll check out some test patterns and verify.


By the way, I am using the 2x scale (3840x2160) rather than the 2.07x (4096x2160), and I use the normal setting on the sony.

Alex
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post #11139 of 11139 Unread Today, 03:05 PM
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Thanks Mark. I see your point about ringing. That would certainly explain why the lumagen upscaling "looks soft" compared to the Sony. I knew I was missing something "simple" . I'll check out some test patterns and verify.

To make it easier for others to follow, ringing is visible as a white halo around dark to lighter contrast transition edges (regardless of the color of the transition). This makes the transition edge easier to see clearly. Obviously the halo must be hiding information behind the artificial halo. sitting far enough away, the halo or the information it hides would not be visible. I do find the halo to be annoying when I see it outlining such things as football helmets etc. while ringing makes an image APPEAR to be sharper, it is ACTUALLY less sharp by masking the info under the halo.

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