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Discussion Starter · #1 ·

I have a sample painted of shirwin Williams white satin and the results are amazing but before I paint the whole screen I would like to make a sample board of a grey paint. What can you recommend for a Epsom 8500 ub in a light controlled theatre with dark walls.

Thanks
 

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I have a sample painted of shirwin Williams white satin and the results are amazing but before I paint the whole screen I would like to make a sample board of a grey paint. What can you recommend for a Epsom 8500 ub in a light controlled theatre with dark walls.

Thanks
Welcome to HTS! :wave:

I know this is just to make a sample, but we have to know a few things first.
What is the size of your screen ?
How far is your PJ mounted from the screen?
 

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Hello..., Welcome to Home Theater Shack (HTS).

The answer to your question and subsequent questions have answers here at the shack. Lots of very knowledgeable people here with lost of experience. I've read the answer a dozen times and depending on the manufacturer you prefer the answer changes s in name mostly. I'll be quiet now...

Great Question, I don't have the answer but until somebody does answer this question... you could search for the answer..., if you look at the top menu bar at the very top of the page, click on the "Home" page link; once on the Home Page, the home link changes to "Forums" link. Now click on the "Forums" link and once on the Forums page look for the Video header. Under the Video header you will find lots of threads associated with screen formulas and gray scales as well I'm sure.

Again, Welcome to HTS...
 

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Discussion Starter · #4 · (Edited)
Welcome to HTS! :wave:

I know this is just to make a sample, but we have to know a few things first.
What is the size of your screen ?
How far is your PJ mounted from the screen?
I have a 94" Da lite hccv screen with a gain of .8. I would like to paint a new screen of about 120" 16/9 or may be go 2:35.1
Is there a light shade of grey that would help me keep the gain that i got with the sherwin william paint it's suppose to be 1.1

Right know my painted sample board 2x4 of shirwin is sitting on my da lite screen and the results are amazing. But I'm curious to know if i can paint it grey instead of white, and still keep the gain of 1.1

Thanks
 

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I have a 94" Da lite hccv screen with a gain of .8. I would like to paint a new screen of about 120" 16/9 or may be go 2:35.1
Is there a light shade of grey that would help me keep the gain that i got with the sherwin william paint it's suppose to be 1.1

Right know my painted sample board 2x4 of shirwin is sitting on my da lite screen and the results are amazing. But I'm curious to know if i can paint it grey instead of white, and still keep the gain of 1.1

Thanks
I still need to know how far your PJ is from the screen, it can make a big difference in the brightness of your image.

Don't be too concerned about screen gain, people tend to make a big deal over it and it is only one screen attribute (and usually not the most important one). Unless you are shooting an image that is pushing the lumens you are kicking out to the max. you won't even notice the difference between a gain change of several tenths. The human eye is very adaptable when it comes to image brightness.

While we haven't tested the Sherwin-Williams paints for gain yet, I highly doubt the supposed 1.1 gain projectorcentral listed for the SW ProClassic satin in 'Extra White'. We have a good Sticky thread about gain at the beginning of this forum, you might want to read that to get a better understanding of gain.

As a paint gets more gray it WILL absorb more light and thus be a lower gain that a lighter paint of the same type. The only way to compensate for this is to either increase the gloss of the paint or to add a reflective element, both of which can cause hot spotting or other negative image artifacts if overdone.

The deepest gray you can use with the Sherwin-Williams satin finish paints is N8 which corresponds to the color SW 'Unique Gray'. With darker grays hot spotting becomes a problem.

If you want a lighter gray to get a slightly higher gain you could use the color SW 'Ice Cube' that is a N9 gray.
 

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Discussion Starter · #6 · (Edited)
I still need to know how far your PJ is from the screen, it can make a big difference in the brightness of your image.

Don't be too concerned about screen gain, people tend to make a big deal over it and it is only one screen attribute (and usually not the most important one). Unless you are shooting an image that is pushing the lumens you are kicking out to the max. you won't even notice the difference between a gain change of several tenths. The human eye is very adaptable when it comes to image brightness.

While we haven't tested the Sherwin-Williams paints for gain yet, I highly doubt the supposed 1.1 gain projectorcentral listed for the SW ProClassic satin in 'Extra White'. We have a good Sticky thread about gain at the beginning of this forum, you might want to read that to get a better understanding of gain.

As a paint gets more gray it WILL absorb more light and thus be a lower gain that a lighter paint of the same type. The only way to compensate for this is to either increase the gloss of the paint or to add a reflective element, both of which can cause hot spotting or other negative image artifacts if overdone.

The deepest gray you can use with the Sherwin-Williams satin finish paints is N8 which corresponds to the color SW 'Unique Gray'. With darker grays hot spotting becomes a problem.

If you want a lighter gray to get a slightly higher gain you could use the color SW 'Ice Cube' that is a N9 gray.
Sorry i edited my message before posting and i erased by accident my distance. I'm projecting from 13' feet .

My sw paint has nicer whites and much better colors than my Da lite screen, but i do notice that the black bars from 2:35 movies aren't as black on the sw white screen. I do loose a bit of dept also.

I'm wondering if i can get those nicer colors and whiter whites with a grey painted screen that maybe is not as dark as my hccv Da lite screen. something in between.

I also have a Walmart and a home depot next door. If you can recommend me something from them i'm sure it will be cheaper then going to shirwin williams. My sw paint cost me 33$ tax in for i quart.

Thanks
 

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Sorry i edited my message before posting and i erased by accident my distance. I'm projecting from 13' feet .

My sw paint has nicer whites and much better colors than my Da lite screen, but i do notice that the black bars from 2:35 movies aren't as black on the sw white screen. I do loose a bit of dept also.

I'm wondering if i can get those nicer colors and whiter whites with a grey painted screen that maybe is not as dark as my hccv Da lite screen. something in between.

I also have a Walmart and a home depot next door. If you can recommend me something from them i'm sure it will be cheaper then going to shirwin williams. My sw paint cost me 33$ tax in for i quart.

Thanks
The problem with using Behr paints is that Home Depot will not tint them to Glidden colors since they also sell real Glidden paints as well. There is no equivalent in Glidden paint to the Behr interior latex enamel which means you would have to use a flat finish paint if you go with Glidden. This will decrease the gain of the paint a small bit, but it should still provide good results. If you want to go with less expensive paint than Sherwin-Williams (and that $33 a quart seems excessive) you could try a quart of Glidden Premium interior latex flat finish tinted to Glidden 'Snowfield'. This is a very light gray (N8.8) paint and sells for less than $10 a quart. Do NOT use Glidden in eggshell or satin finishes since these WILL hot spot.

BTW, Sherwin-Williams is having a 30% off sale until the end of the month.

The 8500UB shooting 13 feet would be hitting a 120" 16:9 screen with ~12 fc (foot candles) in THX mode using low lamp. This is with a new lamp so you could expect to lose up to half of that brightness over the life of the lamp (usually within the first 50% of expected lamp life) which leaves you with only ~6 fc, this is too low for most people. You could use Living Room mode which will bump image brightness up to a whopping 30 fc with low lamp and 15 fc with the lamp at it's assumed minimum brightness. BTW, multiply the fc of the PJ by the screen's gain to get fL (foot lamberts). It looks like you will have to use Living Room mode to get a bright image with a 120" screen.
 

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Discussion Starter · #8 ·
The problem with using Behr paints is that Home Depot will not tint them to Glidden colors since they also sell real Glidden paints as well. There is no equivalent in Glidden paint to the Behr interior latex enamel which means you would have to use a flat finish paint if you go with Glidden. This will decrease the gain of the paint a small bit, but it should still provide good results. If you want to go with less expensive paint than Sherwin-Williams (and that $33 a quart seems excessive) you could try a quart of Glidden Premium interior latex flat finish tinted to Glidden 'Snowfield'. This is a very light gray (N8.8) paint and sells for less than $10 a quart. Do NOT use Glidden in eggshell or satin finishes since these WILL hot spot.

BTW, Sherwin-Williams is having a 30% off sale until the end of the month.

The 8500UB shooting 13 feet would be hitting a 120" 16:9 screen with ~12 fc (foot candles) in THX mode using low lamp. This is with a new lamp so you could expect to lose up to half of that brightness over the life of the lamp (usually within the first 50% of expected lamp life) which leaves you with only ~6 fc, this is too low for most people. You could use Living Room mode which will bump image brightness up to a whopping 30 fc with low lamp and 15 fc with the lamp at it's assumed minimum brightness. BTW, multiply the fc of the PJ by the screen's gain to get fL (foot lamberts). It looks like you will have to use Living Room mode to get a bright image with a 120" screen.
Ok thanks i'll try that snowfield and i'll let you know how it works out. Your absolutly right about having to watch a 120" screen in living
Room or better yet dynamic mode. I zoomed out and i"m missing brightness if i leave it in eco mode and theator 1

Thanks
 

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Discussion Starter · #9 ·
Ok thanks i'll try that snowfield and i'll let you know how it works out. Your absolutly right about having to watch a 120" screen in living
Room or better yet dynamic mode. I zoomed out and i"m missing brightness if i leave it in eco mode and theator 1

Thanks
Is there a Ots Behr paint that i can have tinted to Behr color charts that would do the job? A'm i missing something!!

Thanks
 

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Is there a Ots Behr paint that i can have tinted to Behr color charts that would do the job? A'm i missing something!!

Thanks
There is no Behr color that I know of this is a true N9 neutral gray. They do have a N8 neutral gray called 'Silver Screen', but it is of course darker than an N9. We had come up with our own formulae for a range of neutral grays in Behr paint, but I think Behr now uses a different tinting system so they are no longer valid.

The only other OTS N9 paint that comes to mind that might be available in Behr is an old True Value hardware color called 'Winter Mist'. Don't know if you can get Behr paints tinted to that color anymore or not. I believe the full name of the color is Tru-Color 'Winter Mist'.

You could also try getting Behr paint tinted to match Sherwin-Williams 'Ice Cube', but I have not had very good luck matching SW colors in other brands of paint.
 

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Discussion Starter · #11 ·
There is no Behr color that I know of this is a true N9 neutral gray. They do have a N8 neutral gray called 'Silver Screen', but it is of course darker than an N9. We had come up with our own formulae for a range of neutral grays in Behr paint, but I think Behr now uses a different tinting system so they are no longer valid.

The only other OTS N9 paint that comes to mind that might be available in Behr is an old True Value hardware color called 'Winter Mist'. Don't know if you can get Behr paints tinted to that color anymore or not. I believe the full name of the color is Tru-Color 'Winter Mist'.

You could also try getting Behr paint tinted to match Sherwin-Williams 'Ice Cube', but I have not had very good luck matching SW colors in other brands of paint.
Thanks
 

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Discussion Starter · #16 ·
Hi guys
I'm back and i'm ready to paint my screen again. I now have an account at shirwin williams and a gallon is now very affordable. Will ice cube be the right gray color to use for me. I have a light meter and i have 14 fl right now in eco mode and 17 fl in normal mode with a 108" diagonal 16:9 screen. I want to make a new 2:35 120"wide screen. I'm ready to use living room or dynamic with the new screen. I have 35 fl in dynamic and living room. Should i go with a n9 paint color or should i go a little darker?

My projector is at 10.5 feet and will have to be backed up 3 or 4 feet. My fl will definitely drop from my currant 35fl in dynamic.

What would your shirwin williams recommendation be? My projector is a 8500ub with 400 hr on the bulb.
 

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Hi guys
I'm back and i'm ready to paint my screen again. I now have an account at shirwin williams and a gallon is now very affordable. Will ice cube be the right gray color to use for me. I have a light meter and i have 14 fl right now in eco mode and 17 fl in normal mode with a 108" diagonal 16:9 screen. I want to make a new 2:35 120"wide screen. I'm ready to use living room or dynamic with the new screen. I have 35 fl in dynamic and living room. Should i go with a n9 paint color or should i go a little darker?

My projector is at 10.5 feet and will have to be backed up 3 or 4 feet. My fl will definitely drop from my currant 35fl in dynamic.

What would your shirwin williams recommendation be? My projector is a 8500ub with 400 hr on the bulb.
35 FL in a 108'' screen mean 24,8 FL in a 126'' screen (120'' in 2,35 are 126'' in 1,78), so, yes, you can go even darker than N9. But regardless of luminosity values, personally, i wouldn't live happily with dynamic or living room mode. These modes are improper for watching movies and usually are quite away from the reference (D65).
 

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Discussion Starter · #18 ·
35 FL in a 108'' screen mean 24,8 FL in a 126'' screen (120'' in 2,35 are 126'' in 1,78), so, yes, you can go even darker than N9. But regardless of luminosity values, personally, i wouldn't live happily with dynamic or living room mode. These modes are improper for watching movies and usually are quite away from the reference (D65).
The 8500 ub has a surprizing picture in dynamic with just a little tweaking. I also would rather leave it in theater 1 but my urge to go 2:35 is stronger then I. This will be temporary as I would eventually like to get a panasonic ae 8000 with lense memory. Keeping this panasonic in mind and also my current setup, should I go with a n9 or n8.5 or maybe even n8.

Thanks
 
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