I'd like to add my own personal observation to the Silver / White Spandex Equation
Originally Posted by blastermaster
I'm not sure what kind of calibration you do with your setup, but I have normally just used the presets posted by other users for my projector. Most of the time it has looked really good. However, after I made my spandex screen (grey over white) I decided to use my DVE disc and try it for myself. It is a fair amount darker of an image after doing the calibration, so I'm not sure if it's the properly calibrated image you're not liking or the screen itself. Personally, I have found it to be a tad too dark and have gone with a brighter setting. I know it's "wrong" according to the DVE disc and probably other calibration tools, but this is one of those situations where I choose to go with what my eyes like as opposed to what I should be seeing. For brighter movies, I go with the reference settings I've calibrated.
Don't get me wrong, the screen is definitely darker. But it is possible to get a bright image but you just need to increase the output of your projector (non- eco mode). The benefit of an AT screen trumps the minor negatives by far, IMHO. .
Everything stated above is true...almost to a Fault. I tried out Silver Milliskin over a Painted SF
screen of a very light shade (1.0
= 1.2 gain ) and at first, at the insistence of the Owner who noted that since the default setting of his brand new "Out of the Box" 5020 was THX (6500K / Low Lamp), we both felt that the loss of White level was too extreme to live with in that mode. Of course, the applying of a section of the Silver Milliskin against the existing screen resulted in a direct "side by side" comparison, so the difference seemed excessive...a Gray vs White comparison always grossly favors the White as far as white rendering goes....but introducing "Living Room Mode" made a significant difference as far as overall image brightness. But not so much as far as making the Whites look proportionately brighter.
I was in favor of trying a group of settings that would involve using Living Room, but setting Lamp to low and adjusting Gamma to improve Whites. One thing for certain, with the Silver Matte Spandex, worrying much at all about such tweaking of Gamma settings creating adverse glare (localized blooming)is not necessary.
But....my chance to do so was thwarted by Mr Lucas & Co. On the SF 1.0
surface, THX mode looked crazy good.
So any further attempt to mollify him (Owner) and modify the image was effectively nixed....nipped in the bud....tossed out with the trash. The reason the Spandex overlay was even being considered was that his existing Painted Screen surface has a few "Roller imparted" streaks (Primer) showing through the sprayed-on SF
finish coat. They are only apparent in a upper corner, during "Sky" scenes, but it's very depressing to have a virtually perfect surface, one that is transparent to the eye, but know beforehand that if a blue sky / white cloud scene comes up, your gonna see 'em. And...he (Owner) constantly brought it up as being the sole item he was unhappy with.
So I tried this route to help him & his reluctant wife avoid another bout of Masking / Spraying. The replaced PJ was a Epson 8700ub, one that has never had an issue. But a steal deal on a 5020 was at hand so down it came, and the Spandex fix was to allow the entire equation to become absolutely perfect.
Only it (...the Silver Spandex ) didn't cooperate. The enthusiasm over the improvement the 5020 brought to the table did however squash the last bit of resistance against a screen re-paint ( sanding / 3 coats primer - 3 coats SF 1.0
) so at least that will (should) provide a happy ending.
Now after all that is said, I'm still a proponent for Silver Spandex Screens if & when the circumstances...and personal allowances make such a decision possible (ie: acceptable)
- One must accept that running the PJ in a brighter mode is mandatory
- Absolutely a corrective calibration (Gamma Tweaking) is required
- PJ Lumen output must be 2000+
- Screen size must be restrained to a dimension commensurate to PJ output and placement considerations.
- You gotta like it from the start, and resist making any "White vs Gray" comparisons. Ever.
Bluntly put, to dismiss or overlook any of the above IMO renders the image quality into the "I'm missing something"
mode and for any / all of us DIY'ers who are used to "Over the Top Quality" end results, that can and never will do.
White Spandex? Now that is different if once again, the PJ's Contrast specifications compensate for the White surface's tendency to reduce Black Levels. I will continue to search for a Silver Metallic Spandex with desirable properties, something that with a proper backing will provide at least 1.0 gain. The Matte Milliskin Spandex's complete lack of visible weave or texture makes it a fantastic Surface for High Resolution imagery, especially if Acoustic Transparency is demanded. Most have used the Matte Moleskin to date, but I'm thinking that it's more related to it being less expensive by -$3.00 yd. than any difference in Texture or Light Transmission / Absorption. Having seen many Cloth and Vinyl Screen surfaces, and just a few painted ones (
) I'm sold on the Spandex's visual qualities.