Hello!
I know there are a lotta topics about bulbs in all kinds of Wattages but I couldn't find a satisfying answer to this question:
Is 250W MH (or HQI-> I heard its the same thing) bright enough for the standard 15" LCD setup? I know it depends on what you demand of your setup but let's say I'd like an image I could enjoy without having to think "wow this is too dim!"
Is it possible to leave a (very) dim backlight on during viewing without totally messing up the contrast?
Is a 400W bulb -that- much hotter? Or is it not really a big problem?
I'm just trying to sort out wether a 400W MH (HQI) is worth the extra investment (those bulbs dont come cheap here!) over a 250W
thanx!
I know there are a lotta topics about bulbs in all kinds of Wattages but I couldn't find a satisfying answer to this question:
Is 250W MH (or HQI-> I heard its the same thing) bright enough for the standard 15" LCD setup? I know it depends on what you demand of your setup but let's say I'd like an image I could enjoy without having to think "wow this is too dim!"
Is it possible to leave a (very) dim backlight on during viewing without totally messing up the contrast?
Is a 400W bulb -that- much hotter? Or is it not really a big problem?
I'm just trying to sort out wether a 400W MH (HQI) is worth the extra investment (those bulbs dont come cheap here!) over a 250W
thanx!
Most people have had better results with a 250w. The problem with the 400 watt setup is that the bulb is so big you loose a lot of the light. The 250w is much smaller, so the light is a lot easier to direct where you want it. If you get the icecap ballast it's also a lot smaller than the 400 watt ballast. Alan over at www.diylabs.org has proved that a good reflector can substantially improve the power of any bulb. He has some pictures of a 250w projection with the lights on, and the image is still watchable.
I've purchased some reflectors from Trev and his are purly amazing, a soup ladle ladies and gentle men is not a reflector.
reflector
hey trev. I would be interested in getting a nice reflector from you. How much would it cost me?
hey trev. I would be interested in getting a nice reflector from you. How much would it cost me?
I agree that Alan's reflector isnt very good... but you have to remember that polished Aluminum reflects almost 90% of light as it is. So while special coatings and material help get it up to 99%... you can make a pretty good reflector out of some kitchen tools that I know of 🙂
is $12-15 for a reflector a good price
Interestingly, I sent Alan at DIYlabs some reflector pictures from YWH, but he was more interested in soup ladles😕. Anyway, I got myself one, but havent used it yet.
Interestingly, I sent Alan at DIYlabs some reflector pictures from YWH, but he was more interested in soup ladles😕. Anyway, I got myself one, but havent used it yet.
🙂 Yeah he doesnt like the ones YWH uses because they just sit on the bottom under the light. His ladle covers more of the sides therefore he assumes it's a better reflector.
his probably can covers more, but not all light reflected can get to the condensor or fresnel.
the only one 'near lossless' reflector design I saw in this forum was the one combining a Parabolic reflector and a spherical with condensor lens on its bottom. But nobody reported to have made it.
the only one 'near lossless' reflector design I saw in this forum was the one combining a Parabolic reflector and a spherical with condensor lens on its bottom. But nobody reported to have made it.
Thats the same how the ohp ones work, every single ray of light should be strait, the presision ones i have reflect perfectly the light back in strait rays in turn giving u a brighter more intense light and a hell sharp image, also a cooler lcd beleive it or not and cooler frensel.
Trev
Trev
wow cruser!
That post convinced me of getting a 250W setup!
That's amazing!
I thought about this a LONG time and did a LOTTA research but now i'm sure 😉
Thnx!
That post convinced me of getting a 250W setup!
That's amazing!
I thought about this a LONG time and did a LOTTA research but now i'm sure 😉
Thnx!
Yes cruser has a nice setup.
My friend ace_3000, gets 500 ANSI lumens out of a 2500 lumen halogen bulb! His optics are amazing. When he gets his metal halide his setup will easy surpass 1500 ANSI lumens.
My friend ace_3000, gets 500 ANSI lumens out of a 2500 lumen halogen bulb! His optics are amazing. When he gets his metal halide his setup will easy surpass 1500 ANSI lumens.
- Status
- Not open for further replies.