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Discussion Starter · #1 ·
Hi guys!



Can someone enlighten me in regard to other projectors than the Optomo HD87 that can be bought with a short throw lens?



I have moved to a place where I have only 300cm from wall to wall, so the stock lens will not be able to fill my 92" screen.
 

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Discussion Starter · #3 ·

Quote:
Originally Posted by baltar /forum/post/20822973


Hi,


I was also looking for a solution for a bigger screen with my Mitsubisch HC5000 on a 12 foot distance and i found this:

http://presentation.navitar.com/page...s/overview.cfm


I bought the Standard ScreenStar® SSW08 for 995$ and it increased my zoom with 25% and i am thrilled with the result. The quality is excellent.


Gr.


Marco

Holland

So these 3rd party lenses are intended to work with a range of projectors? I am just sceptical about the optical quality :) and those prices..... yikes... maybe I should just go for an Optoma HD87 with the official short throw...
 

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Quote:
Originally Posted by Webmonkey /forum/post/20823016


So these 3rd party lenses are intended to work with a range of projectors? I am just sceptical about the optical quality :) and those prices

I have bought it with a table mount. With this i think almost any projector will work but you must mail to Navitar about compatibility.


When these lenses would cost 100$ you should indeed be concerned about the quality. Those HD-lenses (1600$ for the 25% zoom) are used in professional flight simulators where every pixel is crucial. Navitar says the standard lenses are for use in a home theatre setup.


I am totally happy with the quality. I use it only with Blu ray material and they look as sharp as without the lense. Navitar offers a 45-day trial period (if you live in the US):

http://presentation.navitar.com/page...evaluation.cfm


However, if you find a projector with a native short throw: that's off course always best. But with this lens you can pick almost any projector you like and still shorten the throw range.
 

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Discussion Starter · #5 ·

Quote:
Originally Posted by baltar /forum/post/20823040


I have bought it with a table mount. With this i think almost any projector will work but you must mail to Navitar about compatibility.


When these lenses would cost 100$ you should indeed be concerned about the quality. Those HD-lenses (1600$ for the 25% zoom) are used in professional flight simulators where every pixel is crucial. Navitar says the standard lenses are for use in a home theatre setup.


I am totally happy with the quality. I use it only with Blu ray material and they look as sharp as without the lense. Navitar offers a 45-day trial period (if you live in the US):

http://presentation.navitar.com/page...evaluation.cfm


However, if you find a projector with a native short throw: that's off course always best. But with this lens you can pick almost any projector you like and still shorten the throw range.

Ok thanks. I just have to add the cost of shipping to Denmark and paying additional 25% sales tax + customs fee for the lenses.


I am mainly looking for something like the Optoma HD87 which has the option of a 0,77x lens.
 

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Quote:
Originally Posted by Webmonkey /forum/post/20823059


Ok thanks. I just have to add the cost of shipping to Denmark and paying additional 25% sales tax + customs fee for the lenses.

Ahh.. then it is indeed a risky and expensive choice.


I live in Holland but i was lucky. When i ordered one a salesperson was on a convention in Belgium. He could send me the lens with no shipping cost and no sales tax.


Good luck...
 

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Quote:
Originally Posted by Webmonkey
Hi guys!



Can someone enlighten me in regard to other projectors than the Optomo HD87 that can be bought with a short throw lens?



I have moved to a place where I have only 300cm from wall to wall, so the stock lens will not be able to fill my 92" screen.
Is that a 92" diagonal 16 x 9 screen, or a 92" wide screen.


If it is a 92" diagonal 16 x 9 screen then perhaps there are few projectors with a fairly wide range zoom lens that just might be able to support that screen size with a lens-to-screen throw distance of the approx. 2.6 m you have available if you mount the projector on the rear wall. I suggest you get an exact measurement then download the owner's manual for any projectors you may want to consider to see if it would work or not. Also be certain to check to see if a given projector requires ventilation on the rear or if it can be place up really close to the rear wall. I suggest you take a look at the Epson Powerlite Home Cinema 8350 or 8700UB (these are the North American model numbers so you would need to check for the model numbers used for you area for the equivalent models - perhaps EH-TW4500 or TW5500). At max. zoom (i.e., set for shortest throw distance) they might just be able to support your requirement.
 

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Discussion Starter · #8 ·
Quote:
Originally Posted by Ron Jones
Is that a 92" diagonal 16 x 9 screen, or a 92" wide screen.


If it is a 92" diagonal 16 x 9 screen then perhaps there are few projectors with a fairly wide range zoom lens that just might be able to support that screen size with a lens-to-screen throw distance of the approx. 2.6 m you have available if you mount the projector on the rear wall. I suggest you get an exact measurement then download the owner's manual for any projectors you may want to consider to see if it would work or not. Also be certain to check to see if a given projector requires ventilation on the rear or if it can be place up really close to the rear wall. I suggest you take a look at the Epson Powerlite Home Cinema 8350 or 8700UB (these are the North American model numbers so you would need to check for the model numbers used for you area for the equivalent models - perhaps EH-TW4500 or TW5500). At max. zoom (i.e., set for shortest throw distance) they might just be able to support your requirement.


It is 92" diagonal. I used projectorcentral.com calculator. I saw the X3 needs about 274cm from screen to lens. Then comes room for ventilation and projector case...
 

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Quote:
Originally Posted by Webmonkey /forum/post/20825434


It is 92" diagonal. I used projectorcentral.com calculator. I saw the X3 needs about 274cm from screen to lens. Then comes room for ventilation and projector case...

I have both an Epson 6500UB (which has the same case design and same lens range as the current models) and also a JVC RS40 (same as X3). While these have virtually identical front of lens to screen minimum throw distance requirements, the JVC case depth is a little larger and JVC suggests a few inches (or cm) of rear clearance for cooling. So I figured if your room is exactly 3 meters wall-to-wall the Epson had a better chance of working with a 92" screen but even then another 20cm to 50cm for throw distance would greatly increase its chances for filling out that 92" screen.
 

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Discussion Starter · #10 ·

Quote:
Originally Posted by Ron Jones /forum/post/20825937


I have both an Epson 6500UB (which has the same case design and same lens range as the current models) and also a JVC RS40 (same as X3). While these have virtually identical front of lens to screen minimum throw distance requirements, the JVC case depth is a little larger and JVC suggests a few inches (or cm) of rear clearance for cooling. So I figured if your room is exactly 3 meters wall-to-wall the Epson had a better chance of working with a 92" screen but even then another 20cm to 50cm for throw distance would greatly increase its chances for filling out that 92" screen.

I just read that the new Epson with LCOS has a shorter throw distance (1.4), so now I am awaiting reviews.
 

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Quote:
Originally Posted by Ron Jones /forum/post/20825937


I have both an Epson 6500UB (which has the same case design and same lens range as the current models) and also a JVC RS40 (same as X3). While these have virtually identical front of lens to screen minimum throw distance requirements, the JVC case depth is a little larger and JVC suggests a few inches (or cm) of rear clearance for cooling. So I figured if your room is exactly 3 meters wall-to-wall the Epson had a better chance of working with a 92" screen but even then another 20cm to 50cm for throw distance would greatly increase its chances for filling out that 92" screen.

None of the current Epson's can throw a 92" image in a 300cm room.
 

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Quote:
Originally Posted by mjg100 /forum/post/20827451


None of the current Epson's can throw a 92" image in a 300cm room.

As per the table on page 14 of the Epson 8350 Owner's Manual the shortest throw for a 80" screen is 2.38m and for a 100" screen the shortest throw is 2.98m, this is the same as my 6500UB. For a 92" screen the min. throw would work out to be 2.74m by these Epson specs. However, this is from the front of the lens to the screen and if the room is exactly 3.00m then this would be about 20 to 30mm short of having enough throw distance given the size of the projector and the need for some ventilation room from the rear of the projector. However, the Epson specs. may not exactly represent the min. and max. throw distances and a given projector may support a slightly shorter throw than spec'ed. The Epson manual describes the values in the table as a 'rough guide' and says 'actual size may differ'. The Epson on-line calculator (for the 8350) shows you need a 9.0 ft. throw distance for a 92" screen. The OP said the room is 3m wall-to-wall, but I had asked if it is exactly 3m or perhaps a little more, since a few extra cm, or inches, could make the difference of these Epson models working nor not.

Quote:
Originally Posted by Webmonkey /forum/post/20827163


I just read that the new Epson with LCOS has a shorter throw distance (1.4), so now I am awaiting reviews.


The Epson on-line calculator info shows the 8350 throw ratios as 1.34 to 2.87, thus these LCD projectors are supporting a shorter throw than the 1.4 you saw listed for the LCoS models (but I would be surpised if they are actually the same). A 92" diagonal 16 x 9 screen is 80" wide and the throw distance would 1.34 x 80" = 107.2" or 2.72m (or just a little less than using the figures in the table from the owner's manual). However with a 1.4 throw ratio the min. throw distance for a 92" diagonal screen would be: 1.4 x 80" = 112" or 2.84m.
 

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Discussion Starter · #13 ·

Quote:
Originally Posted by Ron Jones /forum/post/20827662


As per the table on page 14 of the Epson 8350 Owner's Manual the shortest throw for a 80" screen is 2.38m and for a 100" screen the shortest throw is 2.98m, this is the same as my 6500UB. For a 92" screen the min. throw would work out to be 2.74m by these Epson specs. However, this is from the front of the lens to the screen and if the room is exactly 3.00m then this would be about 20 to 30mm short of having enough throw distance given the size of the projector and the need for some ventilation room from the rear of the projector. However, the Epson specs. may not exactly represent the min. and max. throw distances and a given projector may support a slightly shorter throw than spec'ed. The Epson manual describes the values in the table as a 'rough guide' and says 'actual size may differ'. The Epson on-line calculator (for the 8350) shows you need a 9.0 ft. throw distance for a 92" screen. The OP said the room is 3m wall-to-wall, but I had asked if it is exactly 3m or perhaps a little more, since a few extra cm, or inches, could make the difference of these Epson models working nor not.





The Epson on-line calculator info shows the 8350 throw ratios as 1.34 to 2.87, thus these LCD projectors are supporting a shorter throw than the 1.4 you saw listed for the LCoS models (but I would be surpised if they are actually the same). A 92" diagonal 16 x 9 screen is 80" wide and the throw distance would 1.34 x 80" = 107.2" or 2.72m (or just a little less than using the figures in the table from the owner's manual). However with a 1.4 throw ratio the min. throw distance for a 92" diagonal screen would be: 1.4 x 80" = 112" or 2.84m.

Correction - it was 1,28x for the new EH-R4000. LCOS from Epson.
 

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Quote:
Originally Posted by Ron Jones /forum/post/20827662


As per the table on page 14 of the Epson 8350 Owner's Manual the shortest throw for a 80" screen is 2.38m and for a 100" screen the shortest throw is 2.98m, this is the same as my 6500UB. For a 92" screen the min. throw would work out to be 2.74m by these Epson specs. However, this is from the front of the lens to the screen and if the room is exactly 3.00m then this would be about 20 to 30mm short of having enough throw distance given the size of the projector and the need for some ventilation room from the rear of the projector. However, the Epson specs. may not exactly represent the min. and max. throw distances and a given projector may support a slightly shorter throw than spec'ed. The Epson manual describes the values in the table as a 'rough guide' and says 'actual size may differ'. The Epson on-line calculator (for the 8350) shows you need a 9.0 ft. throw distance for a 92" screen. The OP said the room is 3m wall-to-wall, but I had asked if it is exactly 3m or perhaps a little more, since a few extra cm, or inches, could make the difference of these Epson models working nor not.





The Epson on-line calculator info shows the 8350 throw ratios as 1.34 to 2.87, thus these LCD projectors are supporting a shorter throw than the 1.4 you saw listed for the LCoS models (but I would be surpised if they are actually the same). A 92" diagonal 16 x 9 screen is 80" wide and the throw distance would 1.34 x 80" = 107.2" or 2.72m (or just a little less than using the figures in the table from the owner's manual). However with a 1.4 throw ratio the min. throw distance for a 92" diagonal screen would be: 1.4 x 80" = 112" or 2.84m.

I took into account the depth of the projector. Even not allowing any room for ventilation, he is short on the throw.
 

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Quote:
Originally Posted by Webmonkey
Correction - it was 1,28x for the new EH-R4000. LCOS from Epson.
That's certainly a little shorter throw ratio spec. than for the current Epson LCD models. so if the production version turns out to actually be 1.28 then that would come closer to working for the OP's situation since he would only need to have a min. throw distance of 80" x 1.28 = 102.4" (2.60m). However you would need to also check the projector's cabinet depth. The current LCD models are about 36cm deep, but I don't know what the size will be for the new Epson LCoS projectors nor what the rear ventilation requirements may be.
 
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