ConnecTED
Thank you. I'll look up on what you wrote. I think i need to do a little reading/watching on all things light illusion.

Just saw more C6 hype on the AVSforum.
As asked there, has anyone independent done any valid tests?
No way I'm going to believe a post from someone who is paid by Calman's marketing guy.

Also made some craic about not needing a ND Filter, as he uses a CR-100.
Doesn't he know the CR-100 is specified to 5000 nits?
With the way monitors and TVs are going, an ND filter will soon be needed.
(And with the C6, as that's 5000 nits max too.)

Now that made me laugh!

Steve

I've had another look at the thread.
(I don't use that forum much any more - it's no longer the good calibration forum it once was as it is now chasing cash, and is not 'for the users'. Have you noticed the number of posters that used to provide good information are no longer there... I see DeWayne Davis (D-Nice) has been banned!).

What ColorCal has said regarding the 0.333, 0.333 xy readings is correct.
It certainly appears Matthew Smith (Dark-007) is deliberately posting marketing hype, rather than valid info.
But that's no surprise when he is paid by Calman's marketing manager, as has been pointed out in that thread...

Steve

So it seems old Rev.B firmware is used in the gaudy gold C6...
The Calibrite probes are Rev.C.



Steve

And now confirmed the new gaudy gold C6 is using xrite firmware from 2014...

Steve

2014 Firmware

As an interested if less than able amateur this seems like a fantastic feature to improve my results further. However, I am a little confused as to what I actually need. I assume that the 0.3 is a recommended value and that in this case a larger number isn't any better and is likely to end in worse results. Presumably I need a glass filter with a high as transmission as possible and to be as thin as possible.

So is it as simple as looking at the Knight Optical FNG2552 or am I way off and something like the FNG0325 or even FNG3020 is needed? If looking at replacing the diffuser with a filter why wouldn't a slightly large diameter of 26mm such as the FNG2554 be more suitable given its higher transmission.

Many thanks.

As the guide says: https://lightillusion.com/advanced_operation.html#extend-range
A 0.3 OD (ND 1) filter is a 50% reduction, so doubles the probe's range.
As for the choice of filter & size, that is really up to you.

Steve

Many thanks for the response. Perhaps I am asking the wrong questions. I realise that 0.3 doubles the range but what I am trying to understand is if this is at the limits of what is useful or are there any real world benefits to further reduction and any corresponding increase in range or is it just adding the potential for other trade-offs without any tangible improvements in results?

As for the size I realise that this is user choice but 25mm was specifically mentioned as one possible replacement for the diffusor although it is a tad small. So perhaps I should have asked was the 26mm filter tried and this proved to not fit at all or was the 25mm the only one at hand and it is fair to say that all that is being said is that it worked.

The amount for filter reduction needed is really dependant on what the user requires.
If you only require a 1/4 reduction to get the peak measurement needed, go for that.
And no, the 26mm was not tested for fit.
The image in the User Guide shows the 25mm held in place with an O ring.

Steve