Originally Posted by GEP
If explained, the majority of people still would ask "What?!?"
1. DeepField Imager darkens near blacks selectively to give a higher contrast feeling to the picture - some people call this Black Crush because it "crushes" the dark grays down to black. It may also boost the near brightest areas to the brightest for that scene. However it is seems to be slightly more than simply darkening the dark grays or brightening the brights. If you want pure contrasts and gray scale, then this alters that so it cannot be a pure gray scale.
If your TV offers this feature, it also offers a demo mode. Look at the demo mode and decide for yourself - it is your TV, not the purists here.
2. Film Mode is "2:3 Pull Down Compesation" and is for interlaced incoming signals 480i and 1080i. In order to save signal bandwidth, interlaced signals will divide a frame in to two fields, Field A and Field B, and send these separately. Field A is only the odd numbered horizontal lines of the picture. Field B is only the even numbered horizontal lines. A new field is delivered to the TV every 60th of a second, so because there are two fields for every single frame, there are 30 full frames per second. The TV is a progressive display, not an interlaced display. This means the TV needs to receive the two fields and then combine them into one progressive frame (the display of all of the lines at the same time). The TV and standard TV Broadcast signals are at 60Hz. This means the TV shows 60 frames per second. This also means the TV shows each of the original 30 frames twice to up convert this to 60 frames per second. Video created in a TV studio is 30 frames per second, and if interlaced, 60 fields per second so combine the two fields and then repeating each frame once is the easy part.
However standard film is created at 24 frames per second not 30 or 60 frames per second. This means at the source of the signal they need do a special pattern called 2:3 pull down (some reverse this and call it 3:2 pull down). That would be using repeats to change the frame rate. It works this way:
Frame one is sent and then repeated once, Frame two is sent and then repeated twice, Frame three is sent and repeated once, and Frame four is sent and repeated twice.
Now to send interlaced signals they select just the correct lines for each Field either "e" even lines or "o" odd lines.
1e-1o-2e-2o-2e-3o-3e-4o-4e-4o etc. The reason even is always followed by odd is because that is the way the old fashion CRTs scanned the face plate.
Both of these process are call the frame "cadence" In order to combine the correct Fields of even and odd lines the TV needs to skip several fields and also identify when a frame was lead by an odd instead of an even field. The process of indentifying this cadence and compensating for the combining of lines and the progressive display is call 2:3 pull down compensation or correction. This means that the correct fields were used to combine so you do not have (for example) the even lines from 2e (third repeat) combined with odd lines of 3o (first field).
The Auto setting tells the TV to look for and use the flags in "properly" created digital interlaced signal to identify the fact that there is 2:3 pull down and to compensate. If there are no flags the TV often can still identify these signals by analyzing other factors. However, there can be errors in identification. The OFF setting tells the TV to always use the combination technique it would use for signals originally made in TV studios (30 frames per second).
This feature should be used, and OFF selected only when you can see the TV has made an error. The error is usually something jagged edges or a combing effect on edges.
3. Edge Enhancement - there are several ways to make the edges of objects in the image look sharper. However, most TVs use a technique of looking at the brightness transition at that edge and then adjusting the brightness of the few pixels adjacent to the edge. For instance if the color on the left of the edge is a brightness level of 16 out of a possibility of 30 - low dark and high bright (these are made up numbers for illustration) and the edge itself is 12. The TV may boost a few of the bright pixels adjacent to the edge to brightness 20. This makes the edge at 12 look a little sharper but those few pixels that are artificially bright become a "halo". I know nothing about the Darbee unit so I cannot say how it enhances edges - it should be noted that any edge enhancement is artificial but that does not mean it is bad - no original signal is perfect in the first place.
4. Video Noise means "Video Noise Reduction". Video noise is visible in the picture as tiny dots, snow, grain, slight bug looking crawling etc. It is the unintended "crap" that is in the signal. Remember this is no such thing as a perfect signal. Usually because this noise is very random the TV can identify a lot of this "crap" and correct for it. One of the methods (and there a lot of methods) is to limit higher frequencies of the video signals, however since the fine detail is in the high frequencies, too much limiting of the high frequencies also softens the picture. Usually the best signals are from sources like Blu-ray where there is much less places for the crap to be introduced, so you might want OFF for that source. However, as with everything - there are good Blu-rays, excellent Blu-rays, and poor Blu-rays.