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If a projector has high ANSI lumens, will it tend to have a worse absolute black level?
Answer
The lumens as determined by intensity of lamp illumination used for transmissive or reflective images will not affect contrast ratio, but will affect black levels (not the same thing). Increasing the illumination increases both bright and dark areas by the same percentage. However, this is not to say that the image will appear the same. The lower-level illumination image may look better (more contrast) because of the non-linear response of the eye. You may not notice a 20% increase in brightness in areas that are already very bright, but a 20% increase in brightness in dark areas could be very noticeable.
There are, however, some very high-lumen projectors that have good black levels--as good as lower-intensity ones.
The lumens as determined by intensity of lamp illumination used for transmissive or reflective images will not affect contrast ratio, but will affect black levels (not the same thing). Increasing the illumination increases both bright and dark areas by the same percentage. However, this is not to say that the image will appear the same. The lower-level illumination image may look better (more contrast) because of the non-linear response of the eye. You may not notice a 20% increase in brightness in areas that are already very bright, but a 20% increase in brightness in dark areas could be very noticeable.
There are, however, some very high-lumen projectors that have good black levels--as good as lower-intensity ones.
Which is a better projector technology, DLP or LCD3??
jitinmails
Answer
Neither is better or worse. They have different advantages and disadvantages, but either can give great results.
Some comparisons:
DLP generally offers better black levels, but (in a 1 chip version) can lead to "rainbow effect" in susceptible individuals if the colour wheel speed is less than about 5x. On the other hand it doesn't suffer from "screen door effect" as much as LCD. In general costs for DLP are lower (Because three LCD panels are more expensive than one DLP chip, but also partially because DLP projectors frequently have less flexible optics (e.g. lower zoom lens and and no lens offset capability)).
But there is a great deal of overlap, so you really have to look at the pros and cons of specific projectors.
See the link for reviews and info.
Neither is better or worse. They have different advantages and disadvantages, but either can give great results.
Some comparisons:
DLP generally offers better black levels, but (in a 1 chip version) can lead to "rainbow effect" in susceptible individuals if the colour wheel speed is less than about 5x. On the other hand it doesn't suffer from "screen door effect" as much as LCD. In general costs for DLP are lower (Because three LCD panels are more expensive than one DLP chip, but also partially because DLP projectors frequently have less flexible optics (e.g. lower zoom lens and and no lens offset capability)).
But there is a great deal of overlap, so you really have to look at the pros and cons of specific projectors.
See the link for reviews and info.
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Title Post: Is having a high lumen rating bad for black levels?
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