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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Tue Oct 20, 2009 1:20 am Post subject: |
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| dturco wrote: | | Nashou66 wrote: | The best way to set proper Black levels is to set contrast and Brightness to default settings, on a marquee its 50 for both. the you look at the raster and raise the G2 level till you just barely see the raster light up, back of a click and its set. then to get the total greyscale us a probe and Calman or HCFR and follow kals guide. adjust red and blue and try to leave green G2 levels alone. I can get full fade to blacks in a wide range of contrast leaving brightness set at 50, i can even push Brightness to 57 and get FFTB but leave contrast at 50, it depends on what your looking for.
Athanasios |
So you put the contrast and bright at 50. I got that part. Then you adjust the G-2 till the tube just comes on? Where did the G-2 start from? Zero or what?
My contrast is 55 my bright is 32. Picture is great and I will be trying the Eye one out again later so this is very helpful.
Still guessing
Dave |
Doesn't really matter where G2 starts from doing this method, but you can use Tims greyscale guide as a starting point.
I also se a 5% or 10% IRE window while setting G2 for each color, this allows me to see actually what's going on in the image as well as just the raster. It also depends on how large your image is in your raster deciding what size IRE of the 5% 0r 10%. I have a much larger raster that actually goes off the tube face so i use the full field 5% , I adjust till I barely see the raster light up.
Athanasios
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Kiev Savoie
Joined: 25 Oct 2007
Posts: 432
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| Posted: Tue Oct 20, 2009 1:22 am Post subject: |
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| Mark_A_W wrote: | ""If your settings are high you will put excessive wear on your tubes""
ARRGH!!
If your CONTRAST is too high you will put excessive wear on your tubes.
Brightness does not cause wear.
BRIGHTNESS IS BLACK LEVEL.
Contrast does not bring out detail in dark scenes. Contrast does not allow you to get "full blacks". FRIGGIN BRIGHTNESS DOES.
You really need to understand this.
Don't call me a preacher. And don't mention the stupid bible. |
I apologize for my ignorance on this. All I meant by the preacher comment was to tip my hat to you guys that know a lot more than i do, because i appreciate your help and input. No offense intended. I'll look up a couple of links and get this brightness/contrast thing down.
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Zebu Fellenz
Joined: 21 Dec 2006
Posts: 2567
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| Posted: Tue Oct 20, 2009 1:26 am Post subject: |
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| Kiev Savoie wrote: |
I apologize for my ignorance on this. All I meant by the preacher comment was to tip my hat to you guys that know a lot more than i do, because i appreciate your help and input. No offense intended. I'll look up a couple of links and get this brightness/contrast thing down. |
Ah, don't mind him too much. Mark can be a little cranky when people don't just "get it"  
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RVonse
Joined: 09 Mar 2006
Posts: 3152
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| Posted: Tue Oct 20, 2009 4:45 am Post subject: Re: Stacking |
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| letre wrote: | | is there a dedicated section for stacking in this forum? I was just wondering if two stack 8500 marquee stacked is better than one 9500 projector for 1080p? |
AFAIK, there is no dedicated stacking section and I kind of wish there were because there really is a lot to it. Your OP has been on my mind for quite some time, only in my case it has been the option of leaving my BG1209 in place or replacing with a couple of BG808s. About 4 years ago, I pondered this question to the extent I actually conducted a test for about a week in my garage with all 3 projectors and my laptop. The verdict I reached at that time was pretty much as you would expect. The 808's had great gamma and grey scale but the 1209 provided superior accuracy, low fan noise, and detail. I ended up going with the 1209 but even now I am not sure it was the right decision. I've had a lot of enjoyment from the 1209 but I have also had some maintenance issues along the way. And when you only have one projector on the ceiling and it goes dead, you got nothing and you're not watching movies anymore.
One thing I am certain of though is that I would never blend. With blending, you have all the downsides of having the complexities of all the equipment setup in perfect operation yet no advantage of redundancy. With a stack, if one projector bites the dust you can still limp by on the other one while you wait for your parts on the broken one. I did not think about this redundancy aspect when I decided with the 1209 and now I am starting to regret it. Part of my problem is that I use my theater a huge amount of time and my 1209 has not proven to be as realiable as the BD800 before it. Those are the times when I start wishing real bad that I had another identical working projector (with another set of identical spare cards) sitting in my theater. I could be wrong, but I am pretty sure a theater with stacked projectors would never be totally down. So anyway, I personally think that redundancy is a huge deal (not even mentioned in this thread yet) that will be playing into my decison when the 1209 comes down.
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overclkr
Joined: 08 Mar 2006
Posts: 4227
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| Posted: Tue Oct 20, 2009 4:52 am Post subject: Re: Stacking |
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| RVonse wrote: | | letre wrote: | | is there a dedicated section for stacking in this forum? I was just wondering if two stack 8500 marquee stacked is better than one 9500 projector for 1080p? |
AFAIK, there is no dedicated stacking section and I kind of wish there were because there really is a lot to it. Your OP has been on my mind for quite some time, only in my case it has been the option of leaving my BG1209 in place or replacing with a couple of BG808s. About 4 years ago, I pondered this question to the extent I actually conducted a test for about a week in my garage with all 3 projectors and my laptop. The verdict I reached at that time was pretty much as you would expect. The 808's had great gamma and grey scale but the 1209 provided superior accuracy, low fan noise, and detail. I ended up going with the 1209 but even now I am not sure it was the right decision. I've had a lot of enjoyment from the 1209 but I have also had some maintenance issues along the way. And when you only have one projector on the ceiling and it goes dead, you got nothing and you're not watching movies anymore.
One thing I am certain of though is that I would never blend. With blending, you have all the downsides of having the complexities of all the equipment setup in perfect operation yet no advantage of redundancy. With a stack, if one projector bites the dust you can still limp by on the other one while you wait for your parts on the broken one. I did not think about this redundancy aspect when I decided with the 1209 and now I am starting to regret it. Part of my problem is that I use my theater a huge amount of time and my 1209 has not proven to be as realiable as the BD800 before it. Those are the times when I start wishing real bad that I had another identical working projector (with another set of identical spare cards) sitting in my theater. I could be wrong, but I am pretty sure a theater with stacked projectors would never be totally down. So anyway, I personally think that redundancy is a huge deal (not even mentioned in this thread yet) that will be playing into my decison when the 1209 comes down. |
Can I get an Amen?
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kal
Forum Administrator
Joined: 06 Mar 2006
Posts: 18114
Location: Ottawa, Canada
TV/Projector: JVC DLA-NZ7
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| Posted: Tue Oct 20, 2009 1:46 pm Post subject: |
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I don't think it's worth dedicating an entire sub-forum to stacking/blending because, well, there are probably only a handful of people actually doing it. I also can't imagine it ever being more than just one or two threads where everyone posts.'
If people want, create some sort of "official" thread on the subject and we can make it a sticky.
If people start creating dozens of new threads every week on stacking or blending, then we can create a separate forum for it of course but we're not there now and I doubt we'll ever be there.
Kal
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Ben851
Joined: 13 Sep 2008
Posts: 221
Location: Ottawa, Ontario
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| Posted: Tue Oct 20, 2009 3:51 pm Post subject: |
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Not to hijack the thread or anything - and this may be a dumb question - but has anyone tried blending two different units? By this I mean my Marquee 8500 with my XG1351. I'm assuming it's possible in theory but practically speaking it would be very difficult to get the colors and brightness uniform?
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Thanks,
Ben
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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Tue Oct 20, 2009 7:46 pm Post subject: |
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| Ben851 wrote: | | Not to hijack the thread or anything - and this may be a dumb question - but has anyone tried blending two different units? By this I mean my Marquee 8500 with my XG1351. I'm assuming it's possible in theory but practically speaking it would be very difficult to get the colors and brightness uniform? |
Hello
It could be done as an entry-level starting point; it would look odd to use an 8" and 9" projector though. Best results will always be from matching projectors.
.
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Zebu Fellenz
Joined: 21 Dec 2006
Posts: 2567
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| Posted: Tue Oct 20, 2009 8:37 pm Post subject: |
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| Tim in Phoenix wrote: | | Ben851 wrote: | | Not to hijack the thread or anything - and this may be a dumb question - but has anyone tried blending two different units? By this I mean my Marquee 8500 with my XG1351. I'm assuming it's possible in theory but practically speaking it would be very difficult to get the colors and brightness uniform? |
Hello
It could be done as an entry-level starting point; it would look odd to use an 8" and 9" projector though. Best results will always be from matching projectors.
. |
Tim,
Both the 8500, and 1351 are 8" Machines.
I would think it could work fine, as long as both machines are color filtered, and are both either AC or LC.
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Tue Oct 20, 2009 9:16 pm Post subject: |
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| Zebu Fellenz wrote: | | Tim in Phoenix wrote: | | Ben851 wrote: | | Not to hijack the thread or anything - and this may be a dumb question - but has anyone tried blending two different units? By this I mean my Marquee 8500 with my XG1351. I'm assuming it's possible in theory but practically speaking it would be very difficult to get the colors and brightness uniform? |
Hello
It could be done as an entry-level starting point; it would look odd to use an 8" and 9" projector though. Best results will always be from matching projectors.
. |
Tim,
Both the 8500, and 1351 are 8" Machines.
I would think it could work fine, as long as both machines are color filtered, and are both either AC or LC. |
Right, I tried the 9 and 8 inch ac to lc and you can get the geometry and stuff but the LC and Ac just look too different.
But those you can stack 
Athanasios
_________________
Don't blame your underwear for your crooked ass~ unknown Greek philosopher
"Republicans believe every day is the Fourth of July, but the Democrats believe every day is April 15." --- President Reagan
One Smart Dog!!!
Marquee High Performance Bellows now shipping!!
Marquee Modifications and Performance Enhancement
Marquee C-element and Bellow removal
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| Back to top |
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Kiev Savoie
Joined: 25 Oct 2007
Posts: 432
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| Posted: Tue Oct 20, 2009 11:44 pm Post subject: Re: Stacking |
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| RVonse wrote: | | Part of my problem is that I use my theater a huge amount of time and my 1209 has not proven to be as realiable as the BD800 before it. Those are the times when I start wishing real bad that I had another identical working projector (with another set of identical spare cards) sitting in my theater. I could be wrong, but I am pretty sure a theater with stacked projectors would never be totally down. So anyway, I personally think that redundancy is a huge deal (not even mentioned in this thread yet) that will be playing into my decison when the 1209 comes down. |
This thought crossed my mind the other day and hearing your story really puts it in perspective. Redundancy does make a lot of sense when dealing with 10-20 year old equipment...
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