Epson 5020UB Owners Thread... - Page 44 - AVS Forum
Forum Jump: 
Reply
 
Thread Tools
post #1291 of 1295 Old 06-26-2014, 09:27 AM
Member
 
ashyt16's Avatar
 
Join Date: Dec 2012
Posts: 151
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Liked: 15
Quote:
Originally Posted by kriktsemaj99 View Post
When trying the panel alignment, make sure you only use whole pixel shifts of the entire panel (that should avoid introducing any extra artifacts). To get a whole pixel shift make sure you only move the corners, and move all 4 corners of a given panel by the same amount which is a multiple of 8 steps (8 steps equals 1 pixel IIRC).
This pixel shifting in 8 steps makes no difference in the real world. In fact in my tests it can make the image look worse. I have spent many many hours on this testing this out and comparing. Also how can you light up an 1/8th of a pixel? A pixel is either on or off.
If we are referring to a matrix block of pixels of 8x8 then fine, but that is not one pixel.
To me the problem looks more like an out of line lens system. I've seen it before with lenses that have been incorrectly columised.
ashyt16 is offline  
Sponsored Links
Advertisement
 
post #1292 of 1295 Old 06-26-2014, 09:56 AM
AVS Special Member
 
kriktsemaj99's Avatar
 
Join Date: Jan 2005
Location: Montreal, Canada
Posts: 5,859
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 62 Post(s)
Liked: 142
His case might be an optical problem, but the general advice about panel alignment still holds. Moving 1/8 pixel (1 step) will cause resampling and you'll get double-pixel wide lines. The cure can be worse than the disease, so I would stick to whole pixel shifts (8 steps). But you have to make the same shift on all four corners otherwise you're still resampling, so don't judge the result until all four corners have been moved.

I've played with the alignment on my 5030 (same system as the 5020) and it's clear that doing a global shift of one colour by a whole pixel doesn't cause any extra artifacts.
kriktsemaj99 is online now  
post #1293 of 1295 Old 06-27-2014, 09:29 AM
Newbie
 
pkriengsiri's Avatar
 
Join Date: Jul 2007
Location: Atlanta, GA
Posts: 13
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Liked: 10
Thanks for the suggestions regarding my possible alignment issue. After talking with a tech at Visual Apex as well as one at Epson, I'm just getting a replacement projector sent to me. Crossing my fingers that this one is better.
pkriengsiri is offline  
post #1294 of 1295 Old 06-29-2014, 10:54 PM
DTI
Member
 
DTI's Avatar
 
Join Date: Jul 2008
Posts: 43
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Liked: 11
try this in the LCD alignment on the remote press the RGBCMY and turn the green right down, all 3 Hue Saturation & Brightness now on the alignment select color red first and then on the pattern color R/G now that the green is not so bright you can really see how much to move the red and do the blue with B/G don't forget to default the green back see if this helps
DTI is offline  
post #1295 of 1295 Old 07-01-2014, 06:43 PM
Newbie
 
pkriengsiri's Avatar
 
Join Date: Jul 2007
Location: Atlanta, GA
Posts: 13
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Liked: 10
Quote:
Originally Posted by pkriengsiri View Post
Thanks for the suggestions regarding my possible alignment issue. After talking with a tech at Visual Apex as well as one at Epson, I'm just getting a replacement projector sent to me. Crossing my fingers that this one is better.

Got my replacement projector from Epson today and... WOW what a difference! New one is as sharp as a tack. Blue alignment was a little off out of the box, but that was easily fixed via tips others have provided in this thread.


One other thing I noticed with the defective unit was that there was a very faint dimming that would occur occasionally. The brightness seemed to dim ever so slightly (for a fraction of a second) and the color balance would go a little out of whack as well. No such problems that I can tell with the new one.


Thanks to everyone for their help and suggestions. Very happy 5020UBE owner here!
pkriengsiri is offline  
Reply Digital Projectors - Under $3,000 USD MSRP

Tags
Samsung Ssg 4100gb 3d Active Glasses 2012 Model , Epson 5020ub Powerlite Home Cinema 3d Front Projector
Gear in this thread

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off