CurtPalme.com Home Theater Forum

REGNAD · Joined: 15 Oct 2006 Posts: 173 Location: RICHMOND VA

this post stems from another post in the crt section about g2 adjustments. i have purchaced an Eye One Lt and painfully made my way through my first callibration. unfortunaly i dont like the results. my picture is too bright. i have made note of all my crt settings so i could go back. adjusting the brightness and contrast do not aliviate the over brightness, i put them back to callibrated points. All my graphs look better than my uncallibrated graphs. my luminesance red and green is above the yellow line where they were both very close but under before callibration. what graphs could i post so you guys could tell me what to fix? my starting FtL was around 8.4 and i targetted around 9.4 for the callibration. the room is all black with total light control. do i need to go back down to 8 somthing and start over? when i say too bright i mean i have no black! overall brightness seems fine but my blacks are gone. Also, i used IRE's from http://www.w6rz.net/. i understand they are HD so i chose HD color space during startup of callibration. and i set brightness by calculating y target with 10IRE. i dont want to ramble with random info, please, please, ask your critical questions so i can go back to the dark side!!
shannon

**kal** · Posted: Fri Feb 27, 2009 9:18 pm Post subject:

Post everything.

Post your before results and your after results as two separate ColorHCFR files. (Assuming you're using ColorHCFR of course).

I'm also not familiar with the test patterns you mention and if they're suitable for use for calibration. Why not use the free test patterns I mention in my guide (the AVS ones are free as well.

Kal

REGNAD · Joined: 15 Oct 2006 Posts: 173 Location: RICHMOND VA

?? i must have missed that! where are these test patterns at? also heres some before and after values from my pj.
vph-1252
108" screen

before eye one:

g2 @ 1.5vdc
contrast/brightness @ 80/50
6500 temp
gain:
r-203
g-193
b-195

bias:
r-158
g-142
b-132

after eye one:

contrast/brightness @ 80/54
6500 temp
gain:
r-229
g-193
b-195

bias:
r-162
g-142
b-230

REGNAD · Joined: 15 Oct 2006 Posts: 173 Location: RICHMOND VA

oh, im using a pc with theatertek for playback of SD dvds. i do have an HD tuner but i primarly watch SD dvds. looks like the free test paterns you mentioned are HD only or can the one that says its ment for computer playback be used? my dvd drive isnt HD... i can play the mpegs within windows via quicktime, would this be sufficient? i would like to play the pateterns through theatertek so my final picture isnt skewed by a dvd player that wast part of the callibration. if the mpeg-4's were converted to something else and burnt to standard dvd would they still be accurate?

akajester · Joined: 09 Jul 2008 Posts: 934 Location: Wisconsin

I used the mp4 files and played them through Media Portal on my htpc. I figured this would be best, as that's what plays all my movies. I'm no expert, but I would guess as long as you play the mp4 files through theatertek (like your SD dvd's) it should be relevent to your calibration. I think the tutorial mentions that SD DVD test patterns don't contain the full color space as HD. So, as long as you're using HD patterns you'll be ok.

REGNAD · Joined: 15 Oct 2006 Posts: 173 Location: RICHMOND VA

my TT wont play mp4's is there a way to change that?

REGNAD · Joined: 15 Oct 2006 Posts: 173 Location: RICHMOND VA

i made my own crosshatch and set it as my desktop picture on my HTPC and i noticed a few days ago just after resetting brightness and contrast to 50/80 and setting my G2 to 1.5vdc that my lines were blurry on the right side but not the left side. and it was a little worse on the bottom right. i checked my lenses and they didnt help. i shrugged my sholders and lived with it, but i didnt like it. i fired the pj up today hopeing that Kal would return and give me insight on my problem. HINT HINT. and was sickened by the blurry lines. as mentioned earlier, after callibration my picture was too bright. i lowered my contrast and noticed my lines sharpened up! apparently i was just educated about blooming! is it normal for blooming to be worse on the right side of the displayed imaged? i dropped my contrast from 80 to 54 to rid the blooming. hope this helps Kal! I dont have a manual for a 1252, but i understand that 50/80 brightness/contrast is default values.

**kal** · Posted: Sat Feb 28, 2009 6:46 pm Post subject:

Looking at your graphs you're doing a bit better than before (especially the blue - it's fixed a lot at the low end) but there's still room for improvement. I don't know why you're having brightness problems. Sorry!

Kal

REGNAD · Joined: 15 Oct 2006 Posts: 173 Location: RICHMOND VA

when i set my G2 to 1.5v does that garantee that each tube starts iluminating at the same time? i guess ill redo the callibration with different IRE images.?

REGNAD · Joined: 15 Oct 2006 Posts: 173 Location: RICHMOND VA

wow, i really thought i would get more support. is this the callibration forum? i guess i wasted my money on the Eye One... Mad

akajester · Joined: 09 Jul 2008 Posts: 934 Location: Wisconsin

I wouldn't call that a waste of money, it looks like you've made a huge improvement on your color balance. Not to mention the resale value on those is pretty high, you should be able to get your money back if you sold it.

I'm still learning all this but my first thought was to adjust your blue cutoff settings. Have you tried that yet?

REGNAD · Joined: 15 Oct 2006 Posts: 173 Location: RICHMOND VA

i followd Kals guide to the T. how exactly do i adjust the blue cuttoff? isnt that part of matching the blue and red high end to the green? im going back up to the theater now to begin hour 14. maybe i'll stumble onto something and figure this out. thanks for your help jester but im not holding my breath here. maybe i'll try Radio Shack, see if they have any answers!

akajester · Joined: 09 Jul 2008 Posts: 934 Location: Wisconsin

I guess you'll just have to play with it. I'm working on an issue with my blue right now. I have green and red almost perfect, but the blue is way low from 0 - 60%, then it levels out. So, I need to mess with it more. It's definately a learning curve but It's much more fun than the drywall work. Smile

REGNAD · Joined: 15 Oct 2006 Posts: 173 Location: RICHMOND VA

i agree, drywall isnt fun. i just finished running through mine again. my pj starts blooming on the right side around 65 contrast with the gain and bias at default. i lowered my contrast/ target FtL during callibration. Im not sure if all Sonys do it but when you enter gain and bias adjustments it bumps back to 80 contrast untill you exit the adjustment. this was throughing my blue and green well over target lumenesence. i had to make my adjustments and go to normal status and read my color bars from there. i'll post my new results tomorrow. picture is much better, still a touch bright/blue in dark scenes. with me running low FtL i cant get a reading @ 10 IRE. so im not sure how to better my blacks on the low end. and im not sure why i would be blooming at the factory default contrast of 80. if it wasnt for that i could push more light out.

akajester · Joined: 09 Jul 2008 Posts: 934 Location: Wisconsin

I spent a few more hours tweaking last night and was able to get my colors closer, but my luminance is crazy high on the upper end and my gamma is way off. when displaying the 100% window at 10% size I get 14FtL. On a 100% white screen I get a little more than 10FtL. So, it's plenty bright. Post your results, I'd like to check them out too.

**kal** · Posted: Mon Mar 02, 2009 2:41 pm Post subject:

REGNAD · Joined: 15 Oct 2006 Posts: 173 Location: RICHMOND VA

some sort of direction would have been nice. i made the purchace only because it was spoken highly of and the guide you were kind enough to post was detailed and thorough. i have gotten much help here in the past and felt certain that that help would be here if i needed it with the Eye One callibration process... i stand corrected.

**kal** · Posted: Tue Mar 03, 2009 3:39 am Post subject:

Help is here, but free help only goes so far. Problem is that 1000's have gone through and done the calibration without any issues, along with possibly 100's of Electrohome CRT users. I myself am not sure what the problem may be but then I'm not 100% sure what it could be either having never owned an Electrohome. It may be a setup issue (not 100% calibration oriented).

Kal

REGNAD · Joined: 15 Oct 2006 Posts: 173 Location: RICHMOND VA

ive made a few adjustments and implemented blue gamma adjustment via powerstrip. while adjusting greyscale we adjust the red and blue gain and bias. when would you adjust the green? my pj has a range from 0 to 250 for rgb gain and bias, if red and blue are adjusted to match the green is there a certain point i should set the green to?

akajester · Joined: 09 Jul 2008 Posts: 934 Location: Wisconsin

This is alot better than when you started!