Originally Posted by parekoy
Isf pro calibrators. Are scam, then?
No. What I would say is that determining the correct sharpness setting is a much less technically sophisticated process than, say, adjusting gamma/colour. It is not a case of objectively measuring something with an instrument, but rather making judgements based on looking at patterns.
Originally Posted by lnarbi
The VTs are plenty sharp enough to not have to use the sharpness setting at all. When your white balance is correct, the level of details especially on human faces is incredible.
To not use the sharpness setting would entail leaving it alone. In which case it would be at its default setting of 50. I'm presuming that is not what you mean.
There is no "off" option for the sharpness control. There is a value range from 0 to 100. It is a matter of interpretation that 0 represents the neutral value, which could be viewed as equivalent to "off", but that is no more than opinion.
Note: if the hdtvtest reviews are to be believed, the VT60s always apply a certain amount of undefeatable sharpening. Apparently, if you look closely at fine patterns you will see what looks like ringing, which may be interpreted as artefacts produced by the application of "high frequency gain".
Bizarrely, these displays also blur colour vertically when the sharpness setting is at zero. It's an unfortunate fact that these displays are not really accurate at the level of pixels and there is always some artificial manipulation of fine detail going on.
Whether or not that really matters is a different question. Even if they are not true to the source in all respects, the VT60s can nevertheless produce a lovely picture.
Originally Posted by Iron Mike
sharpness to ZERO, then calibrate properly...
You may say that and there are many others who agree with you. It is, in fact, the setting I have been using for the last 2 years when not experimenting briefly with other values. However, there are others who choose a different value. Chad B has chosen sharpness at 16 when calibrating some displays for forum members.
I guess there are a couple of different ways of thinking about this. You could nudge up the sharpness setting until you see the first artefacts and then back off a level. In that case you might end up with a sharpness setting of 16. But then if you get that you could say, would Panasonic really set the neutral value at 16? I mean, that's kind of a weird number to choose. Surely more natural choices would be either 0 or the midpoint. And if you believe it is zero, then you might reject, say, 1 even if you can't actually see any ill-effects when 1 is chosen. This is a guessing game.
There is also the question of why Panasonic would by default always use sharpness 50. What one needs to understand is that sharpness may impact on other image characteristics. We cannot be sure that, e.g., colour management and sharpness are truly independent in Panasonic's unknown implementation. Having sharpness at what appears to be the optimal value could negatively impact other image characteristics. It kind of makes sense to at least try the settings that Panasonic might have used when they designed and tested the display. We don't know what those settings are, but it is not too much of a stretch to think that Panasonic have been using sharpness setting 50 because that is the default for every picture mode OOTB.
I'll mention in passing that there was a test pattern shown at one of the video shootouts and the Panasonics were the only TVs there to fail that test, in the sense that they were producing strange anomalies that no other sets were. Whether that could have been avoided using less conventional tweaking is something of interest to me. Obviously there are millions of different combinations of control settings and they cannot all be tested. But the sense is that people are tending to adopt very similar traditional approaches and, consequently, there might be something that is being missed. So what I'm trying to do here is explore some of the alternatives and see if an interesting other outcome may result from that. And the more we explore these (sometimes) less conventional settings, the more we may discover and the more informed our choices may be.