Yeah I dunno how that all shakes out, because when you feed the JVC projectors a 1080p24hz signal, they don't convert it to 60hz, they just display it.
post #31 of 188
5/28/11 at 12:04pm
Why don't you link to my thread so I can see what you're talking about... perhaps you misunderstood a post of mine. I have no drift, no inversion over time. I experienced some ghosting with the IR glasses; with thr RF I was able to tune this out.
I don't doubt that 120hz exhibits greater image quality than 60; the refresh is greater. But that's different entirely than not maintaining sync, which is what this thread is about.
Again, with the RF system fine-tuned, I get no ghosting, no image drift.
Unless you have a 3D 120 hz projector you don't have a good reference as to the quality of the 3D image to compare 60 Hz operation. You stated the IR glasses presented a problem which is a sign that sync issues are most likely there. You may be lucky in that the HD70 viewing could be adjusted
with the RF glasses and be stable. I thought the same for 2 of my 60 Hz projectors but after some time I started noticing problems surfacing with ghosting and image inversion in all except one I will test tonight. VIP needs to publish a list of PJ's their products work with.
They are advertised as being compatible with 60 Hz operation than they really are due to this up conversion from 24 hx to 60 hz. The fact that 60 hz viewing requires RF glasses to make adjustments is a sign this problem exists.
As I stated previously the IR glasses work with 120 Hz viewing with only a problem with loss of signal and a polarity correction sometimes being needed.
|Sync: With the ir emitter, I had to press the polarity button probably 50% of the time on startup; while it's too soon to tell for sure, initial sync doesn't seem to be an issue with the rf emitter. So far the polarity with the rf system has been reversed only once or twice, and I have fired up 3d blu-ray & cable dozens of times already... The instances of pseudo-stereo seem to be limited to times I resumed a previously played disc... I have had no problems on a newly loaded disc, or pausing, fast forward, etc.|
|Delay & duty cycle settings: These are the adjustments which directly effect image quality. With the ir emitter, I had two choices - vga or dvi. Vga was too dark, and dvi had too much flicker at 60hz. The rf emitter gives me a good number of settings along that spectrum. Flicker is not eliminated completely, mind you, but I can choose a setting that minimizes it (by sacrificing some brightness).|
|The adjustments give me ZERO ghosting on blu-ray titles; I occasionally see a double-image on some low-end cable content, but I believe these are convergence issues, as they don't "bleed" from eye to eye.|
60 hz switch is a non issue. Your telling me you have absolutely no issues with the HD70 image drift over time or ghosting. need to constantly readjust rf glasses. I have been going back through the threads and there are plenty of 60 hz problems posted. Where you get 90 % of 60 hz users having no issue from I don't know. I've gone back through 24 pages of the theater thread and it looks like 90 % of people are having 60% problems. I have 3 60hz pj's I tested so far and all have sync issues with the 24 to 60 hz up conversion from the displayer.
My H5360 is the only one that works properly.