CurtPalme.com Home Theater Forum

**kal** · Posted: Wed Dec 14, 2011 5:27 pm Post subject:

The thread is here:

http://www.avsforum.com/avs-vb/showthread.php?t=1373556

Tom's findings are especially interesting to read since he backs them up with hard facts.

i1Pro's great if you don't plan on doing low light gamma measures or contrast ratio measurements (since the i1Pro gets kinda wonky at below ~30 IRE on most displays).

Kal

WTS · Joined: 08 Mar 2006 Posts: 1276 Location: Calgary

The i1pro gets wonky below 30ire, that can't be right, there goes your blacks. Is that still the case for the newer versions of the i1pro? Going wonky below 20ire, okay I could live with a little inaccuracy below 20 but starting at 30 can't be good.

It was also mentioned I thnk by both of those guys that if you buy the D3 just replace it every 2 or 3 years. What! Just replace it every 2 or 3 years, geez I don't think so. I think the i1pro would be cheaper then in the long run and live with the slightly off numbers in the low end. Just how far off is it?

I suppose if I got a i1pro I could always take it over to Michael Chen's house and compare it to his new Jeti ( I think that's what it is called), I think he said he paid over 10k for it so it should be fairly accurate. I think once you get the low end calibrated to a ref unit then it should be good for a long time, at least according to Derek who said he has cal'd over 100 units and never had one that didn't meet spec.

Spanky, this years or was it last years new Epson can't be any more problematic than the new or old RS40/45. At least Epson has a great return/service policy, I wouldn't exactly say JVC does or I should say I don't get that feeling from reading alot of the complaints from JVC owners. The thing about Epson is if the model has lots of problems I would think they would just replace it with the newset model as I've heard them doing that for customers.

I aslo agree with you on just how accurate does it really need to be. Hell I've been using the HCFR probe and it seemed to have dialed in the greyscale on my 1200 pro fairly nice or at least it looked damn good to me. And I know it was off because I had Michael Chen do a check comparing it to his mega buck ref probe.

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

I found it depends on what program you use with the i1 pro.

HCFR was pretty stable

Chromapure was a bit more stable

CalMan least stable of all even if setting the low light handler to an appropriate .

The latest version of CalMan states they added more stability to the i1 pro but I have not used it yet to say for sure.

But having said all that it doesnt matter if you profile the D3 to it.

Athanasios

WTS · Joined: 08 Mar 2006 Posts: 1276 Location: Calgary

As I understand it you can only use one probe with the chromapure, unless of course you pay extra for 2 probe usage. Not sure why that is, I don't understand the logic behind that one other than makes Tom more money. What should it matter how many different probes you want to use on any given software.

Using a probe like the i1pro is it necessary to use a program like Chromapure over HCFR to get the most out of the probe?

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

Chromapure has more tools and its more up to date with how it calculates the data from the probes.

Also Chromapure has support for the D3. HCFR has not been updated for a long long time.

But for some reason I always turn to CalMan to calibrate my blend.

Athanasios

WTS · Joined: 08 Mar 2006 Posts: 1276 Location: Calgary

Yeah I haven't seen an update from HCFR for long time. But it was a nice program for the price and I used it alot.

So Calman isn't the most stable with the i1pro yet it is the one you use most often, hmmm. It must be just easier to use then compared to the others.

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

**kal** · Posted: Thu Dec 15, 2011 2:26 pm Post subject:

Ron W · Joined: 07 Aug 2009 Posts: 860 Location: Mississauga

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

Spanky Ham · Joined: 22 Mar 2006 Posts: 5643 Location: Comedy Central

On the flip side, Calman does offer the retail version of the D3. For those that care, $469 allows you to not only do your displays but your monitors as well.

WTS · Joined: 08 Mar 2006 Posts: 1276 Location: Calgary

DOn't get me wrong, I don't have a problem with the pricing set out for the packages. I just don't understand why the extra charge to use it with 2 meters. But it is what it is.

**kal** · Posted: Fri Dec 16, 2011 1:50 pm Post subject:

WTS · Joined: 08 Mar 2006 Posts: 1276 Location: Calgary

Yes I suppose you are right, doing the actual software tables for each probe would be time consuming for sure. I retract what I said before.

**kal** · Posted: Fri Dec 16, 2011 2:00 pm Post subject:

Supporting more probe types means more ongoing support as well, not to mention having to own each of the probes and know the ins and outs of each, test each, and so on. Time is money even if the meters and licensing was free (which they aren't).

Kal

WanMan · Joined: 19 Mar 2006 Posts: 10270

Ok, before I get to the point of d/l the software and starting a calibration next week, is there a recommended hardware platform and operating system environment to be doing this in? In the basement where the projectors are there is a Windows 7 Professional computer, and I can carry in a Vista (God help me) laptop, but would it be better to have an XP platform to do this on?

I may just go out and buy a new, but seriously inexpensive PC to dedicate to the HT just for calibrations.

WTS · Joined: 08 Mar 2006 Posts: 1276 Location: Calgary

Kal,

What are the prices for the i1pro and the i1D3 without software?

**kal** · Posted: Mon Dec 19, 2011 2:31 pm Post subject:

Not really. Microsoft Windows XP, Vista, or Windows 7 will all work. Certainly don't use an older OS just for ChromaPure. There's no difference/benefit.

Kal

**kal** · Posted: Mon Dec 19, 2011 3:04 pm Post subject: