Nak what would your prodiction be for gain on sw and also glidden 450 diamond - Page 2 - Home Theater Forum and Systems - HomeTheaterShack.com

Reply
 
Thread Tools
post #11 of 21 Old 02-03-13, 03:56 AM
HTS Moderator
 
Join Date: Sep 2012
Location: Greece
Posts: 519
Re: Nak what would your prodiction be for gain on sw and also glidden 450 diamond

Quote:
Nak wrote: View Post
No worries Tank! It's all a matter of gray and white. Gray is in fact white, just not as bright. As long as you hit a certain level of fL coming off the screen, how bright your whites are are determined by how much contrast you have, and how well controlled your reflected and ambient light is. For most people, 12 to 16 fL seems to be the key, although I find I like 16 to 20 fL. The SW is not necessarily bad; if you get enough brightness out of your screen with the SW it's great. But if you need to eek every last fL out of your PJ, the Glidden is better. IMHO anyways. If you can go with a full light treatment in your theater, I think White is a great choice. For those that can't, or have an excess of PJ output, then gray is better.
You are quite right my friend!!!

There is no such thing as high contrast screens or magic formulas that improve contrast ratios. The facts of life say that the contrast is being produced and made by the projector unit...period.

The whole thing with marketing so called high contrast gray claims, has to do with ambient light, white walls, white ceilings e.t.c. This has to do with the percieved contrast and not with native contrast of the projector. The truth is that the darker shade works better with secondary reflections because it absorbs more light than the lighter one making the image appear less washed out.

Since we have a constant on light output (12 -16 FL) off the screen, the image that will take from a white and a gray screen, in the same bat cave, will be exactly the same. The only thing that differs are the lumens that hitting the screen which in case of a gray screen will be more to compensate the loss due to darker white.
Yiannis1970 is offline  
Sponsored Links
Advertisement
 
post #12 of 21 Old 02-03-13, 08:19 PM Thread Starter
Shackster
 
tank's Avatar
 
Join Date: Dec 2012
Location: Quebec
Posts: 62
Re: Nak what would your prodiction be for gain on sw and also glidden 450 diamond

Quote:
robsong wrote: View Post
My projector is the Epson 8700ub and was looking at Silver Screen or Glidden Diamond 450 for my screen. My throw is 16' to 110" screen. My room has dark grey ceiling and dark red walls so which one thanks.
I'll give my vote for white, because you're room is treated for ambiant light. I'll only say white if this is for a basement theator with very little light comming in.

Cheers
tank is offline  
post #13 of 21 Old 02-03-13, 09:11 PM Thread Starter
Shackster
 
tank's Avatar
 
Join Date: Dec 2012
Location: Quebec
Posts: 62
Quote:
robsong wrote: View Post
My projector is the Epson 8700ub and was looking at Silver Screen or Glidden Diamond 450 for my screen. My throw is 16' to 110" screen. My room has dark grey ceiling and dark red walls so which one thanks.
Hey robsong is it possible it move up your projector closer to your screen, you you notice a pretty big increase in brightness?
I tried it at that distance and I found it pretty dark, and that was with a new bulb. When I moved it to 10.5 feet the difference in brightness was very obvious. 110" is a pretty big screen, and I have a lot of brightness with mine but only at that distance from the screen.

Cheers
tank is offline  
 
post #14 of 21 Old 02-03-13, 11:45 PM
Senior Shackster
 
robsong's Avatar
john
 
Join Date: Apr 2010
Location: san jose,ca
Posts: 362
My System
Re: Nak what would your prodiction be for gain on sw and also glidden 450 diamond

I'm stuck at 16' to screen for now thanks.
robsong is offline  
post #15 of 21 Old 02-06-13, 10:26 AM Thread Starter
Shackster
 
tank's Avatar
 
Join Date: Dec 2012
Location: Quebec
Posts: 62
Quote:
robsong wrote: View Post
I'm stuck at 16' to screen for now thanks.
I think that if your stuck at 16' it's even more important to use white because you'll have about 30% more brightness vs a grey .7 gain screen.

Calibrate well your contrast and you will really enjoy the picture.
tank is offline  
post #16 of 21 Old 02-06-13, 10:48 AM
Senior Shackster
 
robsong's Avatar
john
 
Join Date: Apr 2010
Location: san jose,ca
Posts: 362
My System
Re: Nak what would your prodiction be for gain on sw and also glidden 450 diamond

Thanks that's what I thinking of doing and go with Glidden Diamond 450.
robsong is offline  
post #17 of 21 Old 02-21-13, 07:48 PM Thread Starter
Shackster
 
tank's Avatar
 
Join Date: Dec 2012
Location: Quebec
Posts: 62
Re: Nak what would your prodiction be for gain on sw and also glidden 450 diamond

Quote:
tank wrote: View Post
Nak I'm sure that I like a brighter picture, it must be 16 fl to 20 for my personal taeste. That's why I'm impatiently waiting to receive my light meter so that my thoughts can become facts. I'm very happy with the shirwin Williams pro classic now that my projector is somewhat calibrated. I definitly will be sticking with the white screen, hopefully it doesn't start to dim on me with bulb age to the point where I'm not happy. The brighter modes are surprisingly well color balanced with a very respectable image, so that should keep my bulb going for a while.

Thanks
Hi Nak i just received my light meter, and i wanted to know what image should i be trying to measure. I read up a little and i figured out how to take the measurement the problem i'm having is to stabalize the lux what image should i be sending through the projector for the meter testing

I don't have a 100 ire test pattern what else can i use?

Thanks

Last edited by tank; 02-21-13 at 07:59 PM. Reason: for my ?
tank is offline  
post #18 of 21 Old 02-21-13, 09:21 PM
Moderator Emeritus
Don
 
Join Date: Oct 2007
Location: Central PA
Posts: 3,772
Re: Nak what would your prodiction be for gain on sw and also glidden 450 diamond

Quote:
tank wrote: View Post
Hi Nak i just received my light meter, and i wanted to know what image should i be trying to measure. I read up a little and i figured out how to take the measurement the problem i'm having is to stabalize the lux what image should i be sending through the projector for the meter testing

I don't have a 100 ire test pattern what else can i use?

Thanks
I'm not Nak, and I hope he doesn't mind me jumping in here, but I think you could make your own white image on your PC by making an image that is a solid white (RGB values are all 255) in the resolution of your PJ and then burn that to a DVD. However, I really suggest you get a proper calibration DVD which will have a 100 IRE image on it, and of course others, to help properly set your PJ's brightness, contrast and color settings.

When taking measurements with your light meter, place the sensor as close to the screen surface as you can with the sensor pointing toward the PJ. You want to measure the PJ light striking the screen, not the screen's reflectance. I found that you need to tilt the sensor slightly up, down, left and right a little until you get the brightest readings.
Harpmaker is offline  
post #19 of 21 Old 02-21-13, 09:31 PM
Nak
Senior Shackster
 
Join Date: Nov 2010
Location: Camas, WA
Posts: 279
My System
Re: Nak what would your prodiction be for gain on sw and also glidden 450 diamond

No worries Harp!

Tank, here's a link to a free Calibration disc. First link is for a Bluray burner, second link for a DVD burner.

http://www.spectracal.com/downloads/...al-HDv1.0p.zip

http://www.spectracal.com/downloads/...1.0p_AVCHD.zip
Nak is offline  
post #20 of 21 Old 02-22-13, 01:37 PM Thread Starter
Shackster
 
tank's Avatar
 
Join Date: Dec 2012
Location: Quebec
Posts: 62
Re: Nak what would your prodiction be for gain on sw and also glidden 450 diamond

Quote:
Nak wrote: View Post
No worries Harp!

Tank, here's a link to a free Calibration disc. First link is for a Bluray burner, second link for a DVD burner.

http://www.spectracal.com/downloads/...al-HDv1.0p.zip

http://www.spectracal.com/downloads/...1.0p_AVCHD.zip
Thanks Harp and Nak
tank is offline  
Reply

Bookmarks

Tags
450 , diamond , gain , glidden , nak , prodiction , sw

Quick Reply
Message:
Options

Register Now




PLEASE COMPLETE ALL REQUIRED FIELDS BELOW... THANKS!

REQUIRED FIELDS ON THIS PAGE
YOU MUST COMPLETE ALL OF THESE

Username
Password
Confirm Password
Email Address
Confirm Email Address
Random Question
Random Question #2




User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
PLEASE READ BELOW PRIOR TO ENTERING AN EMAIL ADDRESS!

ATTENTION!

YOU MUST ACTIVATE YOUR ACCOUNT!

Activation requires you reply to an email we will send you after you register... if you do not reply to this email, you will not be able to view certain areas of the forum or certain images... nor will you be able download software.

AN INVALID EMAIL ADDRESS WILL CAUSE YOUR ACCOUNT TO BE DELETED!

See our banned email list here: Banned Email List

We DO NOT respond to spamcop, boxtrapper and spamblocker emails... please add @hometheatershack DOT com to your whitelist prior to registering or you will get nowhere on your registration.


Email Address:
OR

Log-in










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



Posting Rules  
You may post new threads
You may 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 is not allowed!
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 


For the best viewing experience please update your browser to Google Chrome