The Great JVC vs. Sony Projector Shootout - Dec. 9 and 10 - No price talk, please! - Page 25 - AVS Forum | Home Theater Discussions And Reviews
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post #721 of 729 Old 06-24-2018, 11:05 PM
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Originally Posted by John Schuermann View Post
Dave, that's terrible to hear! Hope everything is looking up at this point!

To clarify - sometimes we did have the dynamic iris engaged, sometimes we did not. This was true of both JVC and Sony projectors, based on audience requests. Since the 385 essentially becomes a 285 with the iris off, many people considering a 285 projector specifically wanted to see the 385 with the iris off.
Isn't $3K (speaking MSRP) a lot to pay just to get a dynamic iris? Is the difference super noticeable?

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post #722 of 729 Old 06-25-2018, 12:39 PM
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Is the difference super noticeable?
Yes, I think it is.

As to whether it is worth the mark up, is down to the value the buyer puts on such a feature and how critical a viewer they are.
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post #723 of 729 Old 06-25-2018, 01:35 PM
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Isn't $3K (speaking MSRP) a lot to pay just to get a dynamic iris? Is the difference super noticeable?
For me the extra money for the 385 was definitely worth it.

Without the manual iris, there would be no way to limit the light output from the projector and in my case it would be way too bright for SDR.

For example, I get about 34+ FL in SDR on low lamp and 40+ FL in HDR on high lamp with a new bulb. The HDR brightness is fine but the SDR brightness is way too bright in a dark theater. It is uncomfortable to watch. With the iris, I can dial back the light output to where my SDR low lamp output is around 20 FL, that makes a huge difference to the overall picture quality, black levels, and comfort when viewing.

With the 285 there is no way to adjust the light output. You can't just turn down the brightness because that isn't the same thing. That doesn't limit light output. It just sets the black point higher. With the 385 and the manual/dynamic iris, you can limit light output with the iris and then use the brightness control to properly set the black point.
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post #724 of 729 Old 06-25-2018, 02:29 PM
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Originally Posted by danielrg View Post
Isn't $3K (speaking MSRP) a lot to pay just to get a dynamic iris? Is the difference super noticeable?
That's $3K gets you lens memory too.
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post #725 of 729 Old 06-25-2018, 02:31 PM
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That's probably the deciding factor for me. Blacks are the be all and end all for me when it comes to deciding on a TV/Projector. So would you say the RS640 has the best blacks currently available for a projector?
No - the best black levels would be on JVC's 20th LTD model !
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post #726 of 729 Old 06-25-2018, 03:54 PM
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For me the extra money for the 385 was definitely worth it.

Without the manual iris, there would be no way to limit the light output from the projector and in my case it would be way too bright for SDR.
An ND (neutral density) filter would work. A 1-stop filter cuts brightness in half, and filters are available starting at .3 stops. You can even get variable ones, although they start at a minimum of one stop.
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post #727 of 729 Old 06-25-2018, 04:33 PM
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Originally Posted by danielrg View Post
Isn't $3K (speaking MSRP) a lot to pay just to get a dynamic iris? Is the difference super noticeable?
The dynamic iris on the Sony is *super* noticeable. It essentially changes your contrast from around 15000:1 to 150000:1. I know Sony advertises 350000:1 but I think its probably less than that in practice. I returned my 285ES and went to a 675ES (was going for 385ES but got a good deal on 675ES) just for the iris. And it was worth it.

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post #728 of 729 Old 06-25-2018, 10:59 PM
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Originally Posted by Archibald1 View Post
Yes, I think it is.

As to whether it is worth the mark up, is down to the value the buyer puts on such a feature and how critical a viewer they are.
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Originally Posted by GregCh View Post
For me the extra money for the 385 was definitely worth it.

Without the manual iris, there would be no way to limit the light output from the projector and in my case it would be way too bright for SDR.

For example, I get about 34+ FL in SDR on low lamp and 40+ FL in HDR on high lamp with a new bulb. The HDR brightness is fine but the SDR brightness is way too bright in a dark theater. It is uncomfortable to watch. With the iris, I can dial back the light output to where my SDR low lamp output is around 20 FL, that makes a huge difference to the overall picture quality, black levels, and comfort when viewing.

With the 285 there is no way to adjust the light output. You can't just turn down the brightness because that isn't the same thing. That doesn't limit light output. It just sets the black point higher. With the 385 and the manual/dynamic iris, you can limit light output with the iris and then use the brightness control to properly set the black point.
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That's $3K gets you lens memory too.
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Originally Posted by markmon1 View Post
The dynamic iris on the Sony is *super* noticeable. It essentially changes your contrast from around 15000:1 to 150000:1. I know Sony advertises 350000:1 but I think its probably less than that in practice. I returned my 285ES and went to a 675ES (was going for 385ES but got a good deal on 675ES) just for the iris. And it was worth it.
Thanks everyone for those great replies! I also read that there's better quality parts or better quality control in the 385 in a review - is that also right?

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post #729 of 729 Old 06-26-2018, 03:19 AM
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I also read that there's better quality parts or better quality control in the 385 in a review - is that also right?
I think that would apply to the later model 550's and all the 260/360 models (late 2017 onwards). Supposedly better QC on lenses being fitted but how one would corroborate this beyond anecdotes and hearsay is anyone's guess.
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