Ian_Currie
01-23-08, 08:10 AM
I wonder if someone can explain this:
I have a C3X1080, going through an ISCOIII to a 132x56 (2.37:1) HP (2.8 gain) screen.
With a new bulb (35 hours to be exact), I use a ND2 filter to reduce lumens and I am getting 20 fL. The image is spectacular, 3 dimensional, colors pop, etc. I'm in awe of it.
However, with a bulb that has 235 hours on it, I remove the ND2 filter and am getting either 18 fL or 26 fL depending on whether I have the iris closed or open. While the image looks OK - certainly watchable, it doesn't have that wow factor. Colors look less saturated and do not pop, image is (by comparison) flat.
I recalled being astounded by the image when I first got my projector and less so after the bulb had some hours on it and was wondering if I just got 'used to' the image, but now that I have a new bulb and can go back and forth, I can see I wasn't imagining this.
Any ideas? Shouldn't the same amount of light produce the same image - or is there a 'quality' of light that degrades as the bulb ages?
I have a C3X1080, going through an ISCOIII to a 132x56 (2.37:1) HP (2.8 gain) screen.
With a new bulb (35 hours to be exact), I use a ND2 filter to reduce lumens and I am getting 20 fL. The image is spectacular, 3 dimensional, colors pop, etc. I'm in awe of it.
However, with a bulb that has 235 hours on it, I remove the ND2 filter and am getting either 18 fL or 26 fL depending on whether I have the iris closed or open. While the image looks OK - certainly watchable, it doesn't have that wow factor. Colors look less saturated and do not pop, image is (by comparison) flat.
I recalled being astounded by the image when I first got my projector and less so after the bulb had some hours on it and was wondering if I just got 'used to' the image, but now that I have a new bulb and can go back and forth, I can see I wasn't imagining this.
Any ideas? Shouldn't the same amount of light produce the same image - or is there a 'quality' of light that degrades as the bulb ages?