Originally Posted by remnant
what does the IPS mean?
honestly you said a bunch of stuff that made little to no sense to me.
There are different types of technologies for thin-film-transistor (TFT) liquid crystal displays (LCDs), which are what computer monitors are.
The VN247H-P uses the cheaper and more common twisted nematic (TN) panel type, whereas the VN248H-P uses a relatively new and cheap in-plane switching (IPS) type. As a result, the VN248H-P has much more consistent color reproduction and off-angle viewing color stability (the colors being the right shade, contrast still being reasonable, etc.). However, it also has something of a disadvantage in pixel transition speed. When it comes time to draw a new image every 1/60th of a second, the colors don't actually change instantaneously at all on LCDs. IPS type monitors change colors slower than TN types in general, and it should be the case for those two. Thus, you can expect a little more of a "ghosting" or trailing effect on moving objects as a result of the pixels taking a little longer to change. The transition time and characteristics depend on which colors it is going between and the properties of that panel and any pixel overdrive implementation. To improve transition times, sometimes the pixels are essentially temporarily driven to a value past the desired one (overdriven) to make the transition to the correct value happen sooner. Both monitors should have overdrive implemented and have multiple strengths available as settings in the on-screen display menu.
However, as I mentioned earlier, when you're talking about motion clarity, the fact that these displays show a constant image (ignoring pixel transition time) for the duration of each frame means that there is perceptually a decent amount of motion blur even if the pixel transition times were instantaneous. That is because while the eye may be moving to track something, the image itself is stuck between refreshes and not actually shifting between the sample points.
In other words, I am saying that a relatively fast IPS panel like a VN248H-P should perceptually be somewhat similar to a TN of the same refresh rate like a VN247H-P in terms of motion clarity. i.e. both should be pretty decent for a wide variety of stuff but honestly bullocks compared to CRTs and some more expensive options these days. So for a modest price increase, you get an improvement in color rendering with little drawbacks. Hence I would not recommend VN247H-P at that kind of price when VN248H-P is available unless you really don't care about color consistency.
For a quick-and-dirty look at what stuff is like on whatever monitor you're currently using, see this:
Now imagine those large blocks of all the same color actually looking like mostly all the same color instead of a gradient from top to bottom.Edited by mikeaj - 3/31/14 at 10:38am