ellisdj said:
The meter I bought came with the software direct from them - from the states. Its a Calman C3.
Ok, the situation is even worse than I thought. If this is the package you bought:
http://store.spectracal.com/c3.html
It costed you around £100 (perhaps up to £150 including import duty, VAT and shipping) for both meter & software. I hope you are not charging anywhere near that for your service. Professional calibrators use gear and software (which are usually higher-level/enterprise/commercial versions to be compatible with their more expensive meters) costing at least £2000, which is why the £250 fee they charge is considered a bargain.
ellisdj said:
its done about 6 calibrations so hardly any at all.
So, you've carried out a grand total of 6 calibrations, learning by yourself, and you are thinking about charging for your service, up against pro calibrators who have undertaken formal training and calibrated hundreds of TVs?
ellisdj said:
Its advertised as accuracy of 0.003 with a repeatability of 0.0005
According to the spectracal webpage I listed above, your meter is only accurate down to 0.05 cd/m2. The Panasonic VT65's black level has been measured at around 0.002 to 0.007 cd/m2 by AVF, so your entry-level meter is definitely not sensitive enough to do a good job.
ellisdj said:
the differences I would hazard a good guess that they are so small as to not be noticeable even by a trained eye.
Your guess is wrong. Have you seen a VT65 that is calibrated by a pro in a home environment?
ellisdj said:
Spectracal / Calman have developed the metre for the home user - its states
And yet you are thinking about using it for field work. The C3 is intended to be for DIY enthusiasts like yourself, not for professional use.
ellisdj said:
I am yet to see any pictures anyone's taken of their pro calibrated sets that touch mine tbh so I cant be far off it if at all.
As you've correctly pointed out in a subsequent post, looking at photos of calibrated TVs is pointless for judging the final result due to variance in the dynamic range and white balance of both the camera and also the end-display (laptop screen, monitor, etc.)
ellisdj said:
In terms of using test patterns from a disc - I don't see why that is a big issue either. At the end of the day the player the disc is in is the player the person will be watching their movies on.
So how are you going to calibrate for broadcast source, let's say Freeview HD or Sky HD box? That's why pros carry a reference-grade signal generator around, rather than relying on the player which may itself be introducing errors.
Look, you may be extremely happy with the results you've achieved on your plasma, and all power to you. But just because you've bought a basic meter, read a few tutorials online, and calibrated a few times for yourself and your family and friends (for free, presumably) who are of course going to be less critical and happy with the result, you think you can start charging people, that amounts to fraud in my opinion, when there are professionals out there who have to spend money and time on proper training and equipment.