JVC Calibration Software V6 For 2015 Models (X9000,X7000,X5000,RS400,RS500,RS600) - Page 141 - AVS Forum | Home Theater Discussions And Reviews
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post #4201 of 4211 Old 10-02-2019, 09:43 PM
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Originally Posted by Sittler27 View Post
(I can't remember if one gamma calibration calibrates every single gamma curve (SDR & HDR; low & high lamp; filter and non-filter) or if that was only for color calibrations)
You need separate gamma calibrations for each unique combination of power and filter; i.e., 4 calibrations if you want all combinations calibrated.

For colour calibration, you also need separate calibrations for the four different iris ranges, if you want to be comprehensive.

Of course, you can calibrate only the subset that you actually use.
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post #4202 of 4211 Old 10-03-2019, 05:37 AM
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Hi Dominic.

For those of us that use the Auto iris settings, does that mean for color calibration, all 4 ranges would be needed since the projector will close the iris down arbitrarily based on picture content?

Thanks,
-D
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post #4203 of 4211 Old 10-03-2019, 05:47 AM
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Quote:
Originally Posted by Dominic Chan View Post
You need separate gamma calibrations for each unique combination of power and filter; i.e., 4 calibrations if you want all combinations calibrated.

For colour calibration, you also need separate calibrations for the four different iris ranges, if you want to be comprehensive.

Of course, you can calibrate only the subset that you actually use.
Thanks Dominic, very helpful. Sorry for the double-posting but realized there were other threads that were newer.

Regarding my last question, would you have any advice?

"I've decided I'm not going to do a colour calibration using the jvc autocal+Spyder5Pro. So I'll use my i1DPro off screen with HCFR software - should I then be making adjustments in the projector's CMS based on what I'm seeing in HCFR (since I'm not using autocal for color calibration)?"
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post #4204 of 4211 Old 10-03-2019, 06:03 AM
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Quote:
Originally Posted by Sittler27 View Post
Thanks Dominic, very helpful. Sorry for the double-posting but realized there were other threads that were newer.

Regarding my last question, would you have any advice?

"I've decided I'm not going to do a colour calibration using the jvc autocal+Spyder5Pro. So I'll use my i1DPro off screen with HCFR software - should I then be making adjustments in the projector's CMS based on what I'm seeing in HCFR (since I'm not using autocal for color calibration)?"
Keep in mind that the greyscale (D65) is actually set as part of colour autocal, not gamma autocal.

I would actually run a colour autocal, and use i1DisplayPro+HCFR to confirm the calibration results. This allows the greyscale to be calibrated for all manual iris settings, something difficult to do without using colour autocal.

It's preferable (even though not mandatory) to run autocal with the RGB gain and offsets in their neutral (0) position.
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post #4205 of 4211 Old 10-03-2019, 06:05 AM
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Quote:
Originally Posted by DMILANI View Post
Hi Dominic.

For those of us that use the Auto iris settings, does that mean for color calibration, all 4 ranges would be needed since the projector will close the iris down arbitrarily based on picture content?

Thanks,
-D
No, its only necessary for manual iris settings, not auto iris.
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post #4206 of 4211 Old 10-03-2019, 08:12 AM
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Quote:
Originally Posted by Dominic Chan View Post
Keep in mind that the greyscale (D65) is actually set as part of colour autocal, not gamma autocal.

I would actually run a colour autocal, and use i1DisplayPro+HCFR to confirm the calibration results. This allows the greyscale to be calibrated for all manual iris settings, something difficult to do without using colour autocal.

It's preferable (even though not mandatory) to run autocal with the RGB gain and offsets in their neutral (0) position.
Thanks again for this, I will run gamma + colour then for all combinations of power, filter & iris ranges.
Could you kindly confirm those iris ranges again for the NX series?

Also, since we do autocal with the sensor facing the lens, how much of a factor would some light in the room have on the calibration results?

I watch usually at night so it's very dark in my home theater - I'd like to do the calibration during the day today where I have blinds on windows that block out 90% of the light but some still gets through and it's not quite as dark as at night during my main viewing.
Should I be waiting until night to do the autocal?
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post #4207 of 4211 Old 10-03-2019, 08:22 AM
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Quote:
Originally Posted by Sittler27 View Post
Thanks again for this, I will run gamma + colour then for all combinations of power, filter & iris ranges.
Could you kindly confirm those iris ranges again for the NX series?
The iris ranges are only for colour, not gamma.

I don’t have an NX but believe the ranges are the same as the e-shift models. The “switching points” are 4, 8, 12, so you can calibrate for example at 0, 5, 10, 15.

Quote:
Also, since we do autocal with the sensor facing the lens, how much of a factor would some light in the room have on the calibration results?

I watch usually at night so it's very dark in my home theater - I'd like to do the calibration during the day today where I have blinds on windows that block out 90% of the light but some still gets through and it's not quite as dark as at night during my main viewing.
Should I be waiting until night to do the autocal?
That’s impossible to generalize as it depends on how much stray light hits the meter. I would not do it for gamma Autocal which involves some very low level readings, but colour Autocal may be OK.

Last edited by Dominic Chan; 10-03-2019 at 09:18 AM.
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post #4208 of 4211 Old 10-03-2019, 09:28 AM - Thread Starter
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Not replying in this thread re calibration of the 4K models, as there is a detailed thread for the new models with a step-by-step guide if there are any questions not answered by Dominic.
Just google the first line of my sig.

Batch Utility V4.02 May 16 2019 to automate measurements files for madVR with support for BD Folders

Last edited by Manni01; 10-03-2019 at 09:32 AM.
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post #4209 of 4211 Old 10-04-2019, 06:07 AM
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Quote:
Originally Posted by Dominic Chan View Post
The iris ranges are only for colour, not gamma.

I don’t have an NX but believe the ranges are the same as the e-shift models. The “switching points” are 4, 8, 12, so you can calibrate for example at 0, 5, 10, 15.
As far as I see on my NX5, you can calibrate at 0 (calibrates 0 to -3), -4 (calibrates -4 to -7), -8 (calibrates -8 to -11), -12 (calibrates -12 to -15)
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post #4210 of 4211 Old 10-04-2019, 06:12 AM
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Originally Posted by SirMaster View Post
As far as I see on my NX5, you can calibrate at 0 (calibrates 0 to -3), -4 (calibrates -4 to -7), -8 (calibrates -8 to -11), -12 (calibrates -12 to -15)
You can use any iris setting within each range. "0, 5, 10, 15" are commonly used simply for ease of remembering, but "0, 4, 8, 12" will provide maximum light within each range.
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post #4211 of 4211 Old 10-04-2019, 06:14 AM
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Quote:
Originally Posted by Dominic Chan View Post
You can use any iris setting within each range. "0, 5, 10, 15" are commonly used simply for ease of remembering, but "0, 4, 8, 12" will provide maximum light within each range.
Yeah, I was focusing on maximum light, but I suppose it makes the most sense to calibrate at the actual values you use. Becasue presumably you only use 1 iris value for SDR and probably a different one for HDR.
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