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Discussion Starter · #1 ·
Hello,


Can anyone tell me if its normal for the blue tube to be out of focus ???


I've tried for some time to get the focus cleart but I have been unable to do so, the Red & Blue are OK but I can't seemed to get the blue to focus properly


ANy ideas ? suggestions ??


TIA
 

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yup thats normal. It's got something to do with gray scale of the projector.

Just don't touch the electronic focus pot.

Good to see another aussie on the boards. There are quite a few of us now.
 

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There are some threads that deal with focus in some detail.


The only way to accurately focus (mechanically) is to focus to the phosphor grain. Do some searches for "holy focus"; "phosphor grain" and "focus blue".


Also read http://www.mooneyass.com/Sony1270Q/index.html


Good luck - focusing is very tedious, somewhat frustrating and quite time consuming. But dedicate 2 or 3 five-hour sessions to it and you will learn LOTS and be very pleased with your picture.


Paul
 

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well on my machine if the blue is totally focused my whites become a piss yellow, when the focus is just out a little and i mean a little the whites perk right up, almost sounds like a detergent commercial doesn,t it?
 

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I've read the blue should be defocused (clockwise rotation of the electronic focus control on the 1272q) to 20% higher light output. Obviously you really need a light meter to do this accurately, and better yet some specific equipment for setting greyscale tracking...


I simply defocused mine until there was just a slight increase in light level; and as penticton I also found this slight movement brought my grey ramps (on the AVIA DVD) to a consistent color.


Paul
 
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