DaViD Boulet
Senior HTF Member
- Joined
- Feb 24, 1999
- Messages
- 8,826
Let me state right off that this post is in no way targeting the excellent reviews of any one site (such as Ron's reviews or DVDfile's reviews) or attempting to pass judgement on the quality of any particular reviewer
Right now most reviewers provide an image/sound quality summary which is often used as a guide for DVD enthusiasts like us looking to be sure a disc is worth the purchase before we place the order. These summaries are delivered in various ways:
Numeric scales like, Picture: 4/5; bar-charts that show Picture Rating: *******__; or text that says Overall picture quality: excellent.
The problem is that such a single rating cannot serve all aspects of what would define a DVD with "good" picture quality. Let me explain.
Imagine a DVD title like Gosford Park. Here is the typical kind of review of picture quality that we'd see (making this up):
Right now most reviewers provide an image/sound quality summary which is often used as a guide for DVD enthusiasts like us looking to be sure a disc is worth the purchase before we place the order. These summaries are delivered in various ways:
Numeric scales like, Picture: 4/5; bar-charts that show Picture Rating: *******__; or text that says Overall picture quality: excellent.
The problem is that such a single rating cannot serve all aspects of what would define a DVD with "good" picture quality. Let me explain.
Imagine a DVD title like Gosford Park. Here is the typical kind of review of picture quality that we'd see (making this up):
Image was good overall, but flesh tones tended to be orange in color and overall detail was lacking giving the picture a soft-focus look. Colors appeared somewhat muted and black-level was acceptable, but the image had a somewhat "flat" quality and lacked the depth and saturation of many other period-films. Noticed no artifacting or distracting ringing from edge enhancement. Grain was evident in some darker scenes as well. Overall picture quality rating: 4 out of 5.What's wrong with that review? Well...on the one hand all of the objective picture quality issues that were mentioned were quite true...rendering a well deserved 4 out of 5 points on overall picture quality.
HOWEVER
This is EXACTLY how the film appeared when projected from 35mm theatrically. The DVD is being as faithful to the source elements, and to the director's intentions, as the format is capable. Is it then fair to give a DVD 4 out of 5 points if the DVD is doing a perfect job (given the technolgy of the format) of replicating the source material? If I'm a film lover who saw this film theatrically, and my goal for home-theater is that it faithfully replicate the film-experience, then to me this DVD really has earned 5 out of 5 points for picture-quality.
Example Problem number 2. Open just about any copy of Widescreen review...seek out a review of an older film and look at the audio rating and you'll likely see this:
"Audio: 2/5 undistingushed mono"
*yes* it's true that the audio from that disc will not be the ideal demo-material to test your surrounds and subwoofer... BUT if the DVD is faithfully rendering the original audio track of the film elements...then the DVD is doing just what it should...and the 2/5 rating is promoting a perception that the DVD audio isn't "good" when it really *is* exactly what it *should* be.
I'm sure each and everyone of you has a token DVD title that comes to mind which illustrates this conundrum. The problem is that there are really two distinct categories of criteria that determine whether a DVD has "good" picture or sound...and they cannot be mixed together into a single rating.
The category most often used defacto by most reviewers is:
Absolute/Objective quality. This describes the picture and sound as they are perceived by the viewer in absolute terms. When we use the phrase "A reference transfer" this is what we most often mean to indicate. If a DVD looks or sounds as good as the format is capable of delivering, then it scores a 5 out of 5 points here. If there is anything that visually changes this...like film grain, scratches, altered color pallete, digital artifacting etc., the image cannot be considered "reference". It doesn't matter *why* such artifacts might be present (for instance, film grain might be intended by the director, or the scratched print might be the best source available, or old optical effects might increase image noise). These more subjective considerations are addressed in their *own* rating system:
The "new" category of criteria I'm suggesting is:
Releative/Fidelity-to-the-source Picture Quality. Here's where the DVD picture (sound follows same pattern) is judged relative to what it *should* look like given the best-surviving source material and the director's intentions. If a film print was filmed to look grainy by the director, then it should look grainy here. If colors were muted or the detail was soft-focus in the director-approved theatrical prints, it should look the same way here. The DVD should be as transparent as it can be as it attempts to serve as medium between the home-theater enthusiast and the source film elements.
A DVD can score a perfect mark in the "relative" picture category but NOT be considered a "reference" disc in absolute terms. And the converse is true...a DVD could have all of the film-grain removed and appear "perfect" in objective terms and score a 5 out of 5 on the absolute picture scale...but not faithfully represent the director's intentions or the source film elements faithfully.
Why is it important to have this dual-rating system?
Because right now most reviewers mix the apples-oranges of absolute/relative criteria in their review rating OR they simply rate on the "objective" scale and just make verbal mention of "but the director probably intended for it to look that way".
The irony is that from a film-lover's viewpoint, the most important issue is not whether a DVD looks like it was shot on an HD-cam, but that it represents the original film elements *faithfully*.
This need to address this issue is apparent in the myriad of threads on this forum where members argue back and forth about what constitutes a "good" DVD transfer regarding issues of film-grain removal and audio processing that alters the original mixes (arguing apples/and oranges rarely results in a *fruitful* conclusion...hehe). Also since most reviews tend to sum up their overall conclusions on a single side of this argument (giving the highest scores to transfers that look objectivly good, but not necessarily faithful to the source) I think a dual-rating system is essential and would demonstrate to both the reading public and studios alike that faithfulness to the source is an important set of criteria to the DVD collector--studios look to such reviews to guide their mastering processing...is it really wise to give lesser marks to transfers that remain faithful to the source image and sound while favoring transfers that alter these aspects to try to acheive a better "absolute" image score? A dual-rating source makes the issue moot...it provides a score on both counts so that they can both be viewed separately and distinctly and *meaningfully*.
I can appreciate both aspects of DVD picture quality...I enjoy it when a DVD is faithful to the source and I also enjoy it when a DVD looks and sounds so stunning I can't wait to use it to show off my system. I think it would benefit the whole DVD community if more and more reviews clearly reflected both sets of values clearly and plainly...and I think a dual-rating score is an easy step in that direction.
Thoughts?