| Author |
Message |
AFryia
Joined: 09 Mar 2006
Posts: 965
Location: S.E. Michigan VPH-G70Q
|
| Posted: Tue Jun 26, 2012 3:40 pm Post subject: |
|
|
I'm @ 106 dia (92" w) at ~123 inch throw rasters maxed.
Simple math puts 110 @ roughly 128 inch throw.
108: throw is ~81inch wide 93" dia. Its an approximation the math is not linear.
_________________
My Volt Blog
|
|
| Back to top |
|
 |
ecrabb
Forum Moderator
Joined: 13 Mar 2006
Posts: 15909
Location: Utah
TV/Projector: JVC RS40, Epson 5010
|
| Posted: Tue Jun 26, 2012 3:43 pm Post subject: |
|
|
| Curt Palme wrote: | | Could HAVE meant..... |
Baahahahahah!!!!!
SC
|
|
| Back to top |
|
|
ecrabb
Forum Moderator
Joined: 13 Mar 2006
Posts: 15909
Location: Utah
TV/Projector: JVC RS40, Epson 5010
|
| Posted: Tue Jun 26, 2012 3:44 pm Post subject: |
|
|
| AFryia wrote: | | Simple math puts 110 @ roughly 128 inch throw. |
Yes, this was established in the first post. IIRC, mine was almost exactly at that throw.
| AFryia wrote: | | Its an approximation the math is not linear. |
As far as I know, it's precisely linear (assuming the image size on the tube face is constant.)
SC
|
|
| Back to top |
|
|
Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
|
| Posted: Tue Jun 26, 2012 4:00 pm Post subject: |
|
|
Yes it is linear. Why would it not be?
Typical throw for a non LC set is 1.4 X the width of the screen, 1.35 for an LC set. Those are 'rough' numbers...
|
|
| Back to top |
|
|
macgyver655
Joined: 22 Aug 2007
Posts: 8508
|
| Posted: Tue Jun 26, 2012 4:03 pm Post subject: |
|
|
| Curt Palme wrote: | | Could HAVE meant..... |
You can bite me TOO! 
|
|
| Back to top |
|
|
macgyver655
Joined: 22 Aug 2007
Posts: 8508
|
| Posted: Tue Jun 26, 2012 4:07 pm Post subject: |
|
|
|
There 3 types of people that REALLY bug me. Former smokers (even though I'm not a smoker), former alcoholics (even though I'm not a drinker) and "GRAMMAR CORRECTORS!!!!"
|
|
| Back to top |
|
|
ecrabb
Forum Moderator
Joined: 13 Mar 2006
Posts: 15909
Location: Utah
TV/Projector: JVC RS40, Epson 5010
|
| Posted: Tue Jun 26, 2012 4:14 pm Post subject: |
|
|
| macgyver655 wrote: | | There 3 types of people that REALLY bug me. Former smokers (even though I'm not a smoker), former alcoholics (even though I'm not a drinker) and "GRAMMAR CORRECTORS!!!!" (even though I don't use grammar correctly). |
There, I fixed that for you, Mac.
Ohhhh.... I'm just kiddin'! The only reason I'm pretty good in the grammar department is because my mom beat it into me.
I know what you mean about "those" people, Mac... I'm not much of a drinker, and I've never been a smoker (save for a few stupid weekends with friends in college), and I agree... The "formerly obsessed now obsessed with staying formerly" people drive me crazy. You shouldn't eat this, you shouldn't drink that, you shouldn't, you shouldn't, you shouldn't... No! How about, "*I* don't have a problem with doing something in moderation, so how about you shut it and worry about your own issues!"
SC
|
|
| Back to top |
|
|
macgyver655
Joined: 22 Aug 2007
Posts: 8508
|
| Posted: Tue Jun 26, 2012 4:22 pm Post subject: |
|
|
| ecrabb wrote: | | macgyver655 wrote: | | There 3 types of people that REALLY bug me. Former smokers (even though I'm not a smoker), former alcoholics (even though I'm not a drinker) and "GRAMMAR CORRECTORS!!!!" (even though I don't use grammar correctly). |
There, I fixed that for you, Mac.
Ohhhh.... I'm just kiddin'! The only reason I'm pretty good in the grammar department is because my mom beat it into me.
I know what you mean about "those" people, Mac... I'm not much of a drinker, and I've never been a smoker (save for a few stupid weekends with friends in college), and I agree... The "formerly obsessed now obsessed with staying formerly" people drive me crazy. You shouldn't eat this, you shouldn't drink that, you shouldn't, you shouldn't, you shouldn't... No! How about, "*I* don't have a problem with doing something in moderation, so how about you shut it and worry about your own issues!"
SC |
I know you guys are only kidding. I know I'm no where near a correct grammar user. In high school I was busy learning a profession and had little time for classes that I felt had little benefit. By the time I graduated high school I was a professional in my field and that's what I felt was important. I may not use proper words or phrases but I'm sure people understand me when I speak. 
|
|
| Back to top |
|
|
dturco
Joined: 06 Feb 2009
Posts: 3778
Location: Eastern Shore Maryland
TV/Projector: Runco DLP VX-3000i Marquee 9500 parts doner
|
| Posted: Tue Jun 26, 2012 4:26 pm Post subject: |
|
|
| Quote: | | I'm sure people understand me when I speak. |
When you're speaking sure, but typing is a different story 
_________________
Firefly rules. Can't stop the signal.
http://www.hulu.com/firefly
|
|
| Back to top |
|
|
macgyver655
Joined: 22 Aug 2007
Posts: 8508
|
| Posted: Tue Jun 26, 2012 4:27 pm Post subject: |
|
|
| dturco wrote: | | Quote: | | I'm sure people understand me when I speak. |
When you're speaking sure, but typing is a different story |
LOL, did I miss something? Is today "Roast Mac Day"?
|
|
| Back to top |
|
|
Spanky Ham
Joined: 22 Mar 2006
Posts: 5643
Location: Comedy Central
|
| Posted: Tue Jun 26, 2012 5:35 pm Post subject: |
|
|
| ecrabb wrote: | Here's how you explain it to him, Jeff:
The lenses are a FIXED focal length, which means the lenses make one specific screen size at any one throw distance. If the projector moves back, the image gets larger. If the projector moves forward, the image gets smaller. Period.
The "SIZE" adjustments are for very small (i.e. a couple of inches) adjustments to the size of the picture. Besides, his problem isn't needing the picture smaller (which he could do, while tolerating the decreased resolution, decreased brightness, and increased tube wear). In his case though, he won't be able to make the picture larger. It will be smaller than he wants. Period.
Setting it up on the floor so he can see what you're talking about is a good idea.
SC |
But why can't I just change the size by pressing a button. Just like my digital. 
|
|
| Back to top |
|
|
jeffslife
Joined: 17 Apr 2010
Posts: 4190
Location: ohio usa
|
| Posted: Tue Jun 26, 2012 5:58 pm Post subject: |
|
|
That was a low blow spanky.
_________________
We are ALL job creators !
|
|
| Back to top |
|
|
macgyver655
Joined: 22 Aug 2007
Posts: 8508
|
| Posted: Tue Jun 26, 2012 6:06 pm Post subject: |
|
|
| Spanky Ham wrote: | | ecrabb wrote: | Here's how you explain it to him, Jeff:
The lenses are a FIXED focal length, which means the lenses make one specific screen size at any one throw distance. If the projector moves back, the image gets larger. If the projector moves forward, the image gets smaller. Period.
The "SIZE" adjustments are for very small (i.e. a couple of inches) adjustments to the size of the picture. Besides, his problem isn't needing the picture smaller (which he could do, while tolerating the decreased resolution, decreased brightness, and increased tube wear). In his case though, he won't be able to make the picture larger. It will be smaller than he wants. Period.
Setting it up on the floor so he can see what you're talking about is a good idea.
SC |
But why can't I just change the size by pressing a button. Just like my digital. |
Because they don't put crappy adjustable lenses on quality equipment..... hehehehe.
|
|
| Back to top |
|
|
Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
|
| Posted: Wed Jun 27, 2012 5:36 am Post subject: |
|
|
| macgyver655 wrote: | | dturco wrote: | | Quote: | | I'm sure people understand me when I speak. |
When you're speaking sure, but typing is a different story |
LOL, did I miss something? Is today "Roast Mac Day"? |
Silly wabbit! Everyone knows that (Big) Macs are grilled, not roasted.
|
|
| Back to top |
|
|
AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
|
| Posted: Wed Jun 27, 2012 7:21 am Post subject: |
|
|
| Curt Palme wrote: | | macgyver655 wrote: | | dturco wrote: | | Quote: | | I'm sure people understand me when I speak. |
When you're speaking sure, but typing is a different story |
LOL, did I miss something? Is today "Roast Mac Day"? |
Silly wabbit! Everyone knows that (Big) Macs are grilled, not roasted. |
Curt, you're in BC, you should know Big Macs are fried!
_________________
Tech support for nothing
CRT.
HD done right!
|
|
| Back to top |
|
|
AFryia
Joined: 09 Mar 2006
Posts: 965
Location: S.E. Michigan VPH-G70Q
|
| Posted: Wed Jun 27, 2012 6:20 pm Post subject: |
|
|
| ecrabb wrote: | | AFryia wrote: | | Simple math puts 110 @ roughly 128 inch throw. |
Yes, this was established in the first post. IIRC, mine was almost exactly at that throw.
| AFryia wrote: | | Its an approximation the math is not linear. |
As far as I know, it's precisely linear (assuming the image size on the tube face is constant.)
SC |
To be perfectly linear the focal point (not plain) of the light path would need at the outer surface of the last lens element.
I didn't think it was because a scratch off to the side of the lens would still be visible in the projected image.
I would agree for this situation it can be treated linear.
|
|
| Back to top |
|
|
ecrabb
Forum Moderator
Joined: 13 Mar 2006
Posts: 15909
Location: Utah
TV/Projector: JVC RS40, Epson 5010
|
| Posted: Wed Jun 27, 2012 6:29 pm Post subject: |
|
|
OK, you lost me there, AFryia... Can you clarify?
Thanks,
SC
|
|
| Back to top |
|
|
AFryia
Joined: 09 Mar 2006
Posts: 965
Location: S.E. Michigan VPH-G70Q
|
|
| Back to top |
|
|
|
|
