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RS-35 calibrated 2 1/2 years ago........Calibration needed?

post #1 of 12
2/10/13 at 9:15am
Thread Starter 
I am considering picking up a used rs-35 that was professionally calibrated about 2 1/2 years ago. It has around 500 hours on the lamp. Would this need to be calibrated again? I have no idea how much the grayscale would be off after all this time. Would gamut have drifted as well? Also, I have no one to calibrate the greysacale so I hope it doesn't drift too much.

What would a reasonable price be? It's in excellent condition by the way.

Thanks,
Tom
Edited by Tom Monahan - 2/10/13 at 9:23am
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post #2 of 12
2/10/13 at 9:42am
Tom,
RS 35 starts to dim noticeably after about 800 hours, at least mine did. Picture still accurate but to compensate I used the high lamp mode after about that time. Lamp change will be necessary at just over 1000 or so, at least for me it was the case.
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post #3 of 12
2/10/13 at 11:35am
If its calibrated, its most likely not calibrated for your environment. Unless it was calibrated from the same throw distance, same screen, same color room, etc. No ones setting is correct for your setting. If that was the case, we would not need to calibrate our projectors. We could just take information from reviewers.
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post #4 of 12
2/10/13 at 12:35pm
Thread Starter 
Mike Garrett, at avs, told me that a projector purchased from them could be sent to Jason/Zombie for calibration. Are you saying then that his calibrations are useless?

Jason Turk calibrated all of my projectors over the years before shipping them to me.

I live in Montana and have no one to calibrate greyscale and CMS. The only way I could get a professional calibration on any projector, would be to send it to someone who can do it.

Tom
Edited by Tom Monahan - 2/10/13 at 3:28pm
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post #5 of 12
2/10/13 at 12:50pm
Sending a projector to someone to calibrate it will not take into account your screen, room and ancillary equipment. So seems a shame to do half a job on such a decent projector. I don't know if they still do it but some projectors were 'calibrated' from new before shipping, which is even worse in my book since the lamp changes so much in the first 100 hours that even if it was done in your room the drift would make the calibration next to useless. If this RS35 was calibrated when new in such a way, then for all intents and purposes treat it as if it isn't calibrated at all now at 500 hours.
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post #6 of 12
2/10/13 at 12:59pm
Thread Starter 
I understand what you're saying but why would avs offer this service?

I was told they send them to Zombie to calibrate and then he ships to the buyer.

A professional reviewer for a certain magazine sold his 35 recently here. He mentioned in his ad that he recently calibrated it.

So what in the hell are those of us who live in the middle of nowhere supposed to do?
Edited by Tom Monahan - 2/10/13 at 1:19pm
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post #7 of 12
2/10/13 at 1:34pm
Thread Starter 
So if one uses the zoom method for scope, the 2.4 and 16x9 would need different greyscale and gamut calibrations?

Another forum member has a rs35 for sale. It was ISF calibrated in a dark room on a 1.3 screen. I use a 1.0 screen very similar in size to his also in a darkened room. Wouldn't this be better than a factory calibration?
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post #8 of 12
2/10/13 at 1:39pm
It would be better than a factory calibration but it doesn't take into account your screen and setup. I bet color and grayscale would still be quite close though. Gamma is where you'd have to worry since this deals directly with your white point. Also, the JVC's tend to drift in gamma accuracy pretty early on. With the older JVCs (including the RS35) an outboard processor like the Lumagen comes in handy in this regard since the JVC gamma controls aren't very good. In your scenario a lot of it is going to come down to just how picky you are about accuracy.
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post #9 of 12
2/10/13 at 1:55pm
Thread Starter 
Quote:
Originally Posted by Kris Deering View Post

It would be better than a factory calibration but it doesn't take into account your screen and setup. I bet color and grayscale would still be quite close though. Gamma is where you'd have to worry since this deals directly with your white point. Also, the JVC's tend to drift in gamma accuracy pretty early on. With the older JVCs (including the RS35) an outboard processor like the Lumagen comes in handy in this regard since the JVC gamma controls aren't very good. In your scenario a lot of it is going to come down to just how picky you are about accuracy.

Thanks Kris!

I'm coming from an rs2 and the colors are cartoonish due to it's wide gamut. I thought my projectors were properly calibrated from avs but I guess I was wrong. The room etc. plays a part in this that I wasn't aware of. Since I don't know what an accurate image looks like I assume I would be pleased with he 35. I just don't want cartoonish colors and a tinted picture, especially green, since I love watching black and white movies.

By the way, I kick myself for not buying yours since it had great focus and convergence. Maybe your buyer would like to sell;)

Tom
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post #10 of 12
2/10/13 at 4:18pm
The colors out of the box are quite a bit better than the RS2, no worries there. You could probably get away with the THX preset and be way better off than your RS2. Are you sure there are no ISF calibrators in your area? I would look on the ISF site and see if there are any.
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post #11 of 12
2/13/13 at 10:46am
Thread Starter 
Would a used rs-35 have better pq compared to a new rs-46?. My big concern is focus and out of box convergence.

Since the 35 has hand picked parts, would this mean that it's focus and convergence should be good on every 35 or will their be some that are less than stellar?

Thanks,
Tom
Edited by Tom Monahan - 2/13/13 at 11:59am
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post #12 of 12
2/13/13 at 12:25pm
Quote:
Originally Posted by Tom Monahan View Post

Would a used rs-35 have better pq compared to a new rs-46?. My big concern is focus and out of box convergence.

Since the 35 has hand picked parts, would this mean that it's focus and convergence should be good on every 35 or will their be some that are less than stellar?

Thanks,
Tom

The optics in the RS35 are higher quality than those of the RS46, although the RS46 will probably be covered by a new warranty, and have a new bulb. Depends on how worn the projector is (especially when convergence issues might develop overtime), but I'd probably wouldn't pay more for a used RS35 over a new RS46.

As everyone says, either projector should be atleast an improvement over the RS2, definitely in color accuracy.
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