I just read desray's blog on his new sony projector and he metioned that ideal lumens should hover around 1000-1300. Lumens beyond 2000 would have eye fatigue. Previously I used Optoma HD70 and has 1000 lumens. Screen from projector is about 3.2m and I had no eye fatigue. As I will be getting a new full hd projector and have lumens of 1800, I'm not sure would this brightness cause eye fatigue. Hope to get some comments from users who use 1800 lumens projector.
Having eye fatigue has more factor than just the lumen output from projector, the screen size, distance of view, screen gain , the screen characteristics type of source playback , time spent on using and human facial built on the different diopter's.These will be the factors that might or will cause eyes fatigue .Basically during the design process of your home theatre set up , there basic factors to consider . A) Room size B) Room environment and aesthetics.C) Screen size and propertie.D) Sitting distance E) Type of projectorF) Source most played or viewing .Hope that helps
It should be okay as long as the projector is meant for Home Theater viewing...just curious what projector are you using that have a published lumens of 1800? 3LCD?
Thanks for the reply. I'm looking at DLP projector.
Cool...I bet its a 3D projector? No?
Thanks alf for filling in the void on this projector lumens segment.
I find my new pj is too bright. I played around with the adjustment of the brightness and contrast and found that it only helped a bit.Is there any alternative to reduce the brightness?I read that some users used a ND2 filter to bring down the brightness. Anybody here is using this?
Haha...just as I suspected. I assumed you are already using the low/eco mode? ND2 does help to reduce the brightness output but you may not like the 'overall' effect it has over the projected image. Can your projector close the IRIS all the way down?
Although the spec mentioned that the lamp has 2 modes, standard or boost mode. But I can't find anywhere in the manual mentions these modes.I'm not sure what is IRIS. I don't see any mentioning of IRIS in the manual.
Dan, have you calibrated the PJ? Might be surprised with the results. Also what screen and what gain is urs? Maybe can get a grey screen with low gain to give u nice blacks and reduce the overall glare. Other than that you might need ur cataracts done *joke*
Not calibrated and I find the colour out of the box is good as compared to my previous pj. I had tried to learn on how to calibrate a pj but cannot grasp the understanding of it using a DVE calibration disc. Screen is 85" 1.3 gain matt white. I understand a grey screen would reduce the brightness and increase the black level. But not sure by how much.
A greyscreen in your case won't help to bring down the brightness level except to enhance the black levels. A gain of 1.3 is common for most Matte White screen...a properly calibrated projector will usually reduce the output by a fair margin.I think you should get the ND2 filter if you dun intend to do any calibration. Even if you perform the basic DVE calibration...chances are it may still be too 'bright' for you...as you need to play with the bias and gains of the RGB spectrum.
You can borrow my calibration disc- dead easy to use (and hence v crude) but it will get you in the ballpark to give you an idea.
Think it's spears and M. You have the DVE? Wouldn't mind trying it out.
Which calibration disc is that? Hope it's user's friendlier than DVE.
There only a few calibration disc available ( bluray type ) , Spear & Munsil , Disney wow , THX in Teminator 2 Sky net edition all this using a blue filter only .DVE is in bluray and it comes with 3 colour filter RED , GREEN & BLUE . The basic calibration needs only five steps :A) Brightness B) ContrastC) Colour D) TintE) SharpnessThe older DVE , Avia I , Avia II , Monster are in DVD which are not ideal for bluray calibration .I have all the disc and found that the DVE bluray version is the most easy to use .Hope that helps
After using the projector for a few discs, I seem to get use to the brightness. Since I have an existing UV filter and bought a ND2 filter, I tried them out to see the effect.Hope my findings are useful to the users who have high lumen projectors. Without any filterWith UV filter: the brightness decreases a bit without affecting the white and detailsWith ND2 filter: the brightness decreases substantially and increases the black level but it affects the white and some details are lost