February 23, 2017 at 9:21 AM #11478
I have a Panasonic VT60 that is quite prone to image retention – a small price to pay for Panasonic plasma’s awesome picture quality 🙂
To reduce this when viewing content in 4:3, the panny has an option to change the sidebars from black to various shades of grey. Using the brightest shade of grey means that there is virtually zero IR. When the sidebars are left at the default black setting, the IR is noticeable after an hour or so of use.
Would it be possible to offer something similar on the OSSC? In order to get the correct AR when using the OSSC, I have to set the VT60 to 4:3 mode. There doesn’t seem to be a way to get correct AR when the TV is in 16:9. I’ve spent hours and hours playing around with the advanced timing tweaker in order to get some decent settings for 4:3, so I’d rather not have to start over again in order to explore these options for 16:9. Either way, I would still need to be able to control the colour of the background of the OSSC.February 23, 2017 at 6:06 PM #11496
You can already do this using masking (under Post.Proc. menu). There is a setting to increase brightness of the mask. Ofc, this won’t brighten the area outside of the active area, but maybe you can combine it with the TVs own function? Or it’s not possible when you’re in PC mode?February 24, 2017 at 2:22 AM #11502
Yeah I just discovered the setting this morning. I need a few extra notches on the upper limit though. Being greedy here, would just like if it were closer to the max setting for side panel adjustments on the VT60.February 25, 2017 at 3:22 AM #11529
Mask brightness range will be increased on next fw. I wouldn’t be too worried with VT60 unless reliability has gone down on Panny’s last panels. My VT30 has witnessed hundreds of hours of 4:3 content with pitch-black side bars, and there’s no visible unevenness in brightness when watching 16:9 content. Line bleed has recently become quite noticeable, though.February 25, 2017 at 12:27 PM #11532
Oh sweet, sounds good.
Yeah my VT60 shows a noticeable difference in the sidebars after only a few hours of 4:3 use. Changing the sidebars from black to the brightest grey option seems to alleviate the problem fully. It’s just that so far I can only get Lx4 working so there is a strip of OSSC mask running across the top of the screen. If I can turn the mask brightness up to match the panny side bars at full grey, I’m hoping it will mean that the IR risk is the same the side bars. IE, not noticeable after a few hours of usage.
The VT60 owners thread on AVSForums has a few stories of other users with IR problems and a mate of mine has issues with his also. My guess is that the Panasonic engineers went all out for PQ, at the cost of increased IR. Or maybe they just ran out of dev and testing time….
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