Sim2 Lumis Owners Thread - Page 52

Interesting. I always had dynamic black off since it was the only way to stop the pumping. However with the latest firmware I tried dynamic black again and so far it's performing the best ever with very little pumping (still not perfect but so far acceptable). Good luck.

Jeff,

Was running out the door when I saw this come across the BlackBerry... turned around to make a quick reply:

HOLY CRAP! I agree, it was HORRIBLE!! Embarrasing actually. I never noticed it before The Blind side... but it was HORRIBLE!! Somebody needs to call SIM2 and tell them about the IRIS pumping and this movie... it is the EPITOME of Iris Pumping.... just aweful... I was cringing as the scenes darkened, brightened, darkened.... Terrible!

Someone please report this and give us an update since this is clearly the standard for detecting Iris pumping.

THis film seemed to be a perfect storm for the issue.. fully exposing and exacerbating the issue. It was really, really problematic.

I'm going to reload and retry. The last 1/2 was very egregious.

It's amazing how those of us who complained about the pumping when the Sim2 Lumis first came out were treated as though we were crazy. Now all of a sudden it's a big deal. I fully agree that Sim needs to address this but they should have addressed it months ago. That said, turning dynamic black off will solve the problem for now and it doesn't make a tremendous difference in the look of the picture. There's no reason "The Blind Side" can't be enjoyed with db off until the day comes when, hopefully, Sim will fix this. But it's not a dealbreaker.

The "pumping" issue has been relayed to Sim2 USA and they are notifying Italy to look into the problem.


Jim

That's good to hear except that Jason had said that they were aware of it last year when a number of owners were complaining about it.

Jason is correct, I relayed the same message last year, shortly after release (as did others). Obviously the issue persists, which is why I notified them again and received a response indicating the issue would be escalated to Italy. Hopefully, it will get some attention.


Jim

How does turning off dynamic black affect on/off contrast?

Good question.

Jason has said there is a new "Lumis Uno"; smaller watt bulb and no DI.

I wonder how they compare?

If you turn off the Dynamic Black and it's still pumping, it's the movie, not the projector.

OK, does turning off the dynamic black turn off the dynamic iris?

Lon,

Dynamic Black is Texas Instruments' tradename for a dynamic iris, so the answer is yes.


Ken Whitcomb

Went back to 3.14.07. Played Blind Side (part where Michael is talking with NCAA attorney). Still pumping but perhaps less. I never really noticed it on 3.14.08. Turned off dynamic black and all's fine.

Anyone have a copy of 3.14.08? I'd like to reload and try.

Send to almightyblando@hotmail.com

Thanks!

Sent

Thanks Ken

Thanks!

I'll be calibrating a Lumis tomorrow on a Stewart AeroPlex 100 (rear projection) screen. Since this is a unity gain surface, it should be interesting to see how it measures.


Ken Whitcomb

Jeff I have most of the firmwares saved if you need any of them (though I know cal87 already sent one of the requested ones to you).

I'm using the Lumis with Studiotek 100 (1.0 unity), so all of my measurements earlier in this thread were based on that. The purity of the Studiotek 100 material is just amazing... I can not use any other screen material in the future. I'm hooked.

As a scam alert/warning to those who were contemplating www.bulbtogo.com for replacement bulbs in a post mentioned above: I purchased a replacement bulb that was supposed to be the wattage for the Lumis and it turned out they sent me an incorrect wattage 260w bulb instead. When I called to let them know they sent the wrong bulb they said to use it anyway they didn't have the correct bulb in stock as it's no longer available and that using this one would be fine. I disagreed, got an RMA and returned the bulb to them and have been getting a runaround, even after putting in a paypal claim I have not seen a credit for the return. Be very very wary of using these guys. You have been warned.

I had a bad experience with bulbtogo too. Very shady! However replacementlightbulbs.com was great.

I expect we will see pricing increase over time with traditional lamps once new alternative light source's start to dominate the market.

Great point Alan, buy a bunch now! I love the Lumis so much I really could care less what comes down the road: 3D, HDMI 1.5, 4 colors, 4D???!?? Who cares. Just give me a lifetime supply of Lumis bulbs and I'm good. I'm not convinced that multi light source LED's can overcome the inherent issues in not having a single light source. Who knows in future though? Complex technical problems have a way of being solved if there's enough money in it.

+1!

+ 2 !!

I was going to watch " The Blind Side " last night to check out this pumping isue, but watched Sherlock Holmes instead. It looked OUTSTANDING !! And I could detect zero pumping on this movie. When the DI works, it really looks great.

I may have one other example of a movie / scene that trips up the DI. There are a couple of scenes in the wonderful movie " The World's Fastest Indian " before he leaving for America, I think when he's in his little house with his girlfriend from the bank. Very black background. Last time I watched it the background was flashing on and off - it looked really weird. Just those scenes though. The rest of the movie was fine.

"The Blind Side" is the only movie I have seen pumping with.... I don't know what it is about that movie, particularly the scenee that kept going back and forth from Sandra Bulluck to something else... but it send the dynamic Iris into a very slow (obvious) closing... and you can hear and see the iris working... literally watching the relatively static picture just markedly dim over 2 seconds... I actually turned red from embarrasment becasue it was so aweful and obvious what was going on. Again, I've never seen it in any other movie, but "The Blind Side" definitely expolits the weankess of the DI algorithm in a big way.

The good news is that I've only seen this on one movie... I have the original firmware and need to check what it is for curiousity sake.

Oh, and + 3 (I don't give a crap about 3D). 3D will not make me move from the Lumis. The only thing to do that would be something that would surpass the picture quality of the Lumis.

Although I have no intention of replacing the Lumis any time soon, I could see myself getting a new LCD to at least try out some 3D material. I am due to replace some of my flat panels anyways.

Cropping AVATAR for 2.35 viewing...

I haven't fiddled yet, but I was going to try and crop AVATAR and watch it at 2.35 with my A-lens... I'd like to see if it really detracts from the film (and for fun).

What would be the best settings or method to set up a Memory input to do this?

Thanks

Don't you want to use your normal vertical scaling as that would keep the correct ratio for the A-lens?

We first saw Avatar 3D at the Az Mills IMAX, 16:9, using 2 DLP projector, just too dark.

Week later saw the 3D version at Harkins Tempe Marketplace, using 2:35 screen. Don't know if they had a 2:35 version, or simply set up the projector to play the center 2:35 portion. But brightness was very good and the picture was fantastic!!