Originally Posted by hpmoon
Jay968, you are confusing two unrelated phenomena. In another post, you wrote that you were seeing interlacing artifacts all over the place. Then here you are using the term aliasing while going back to the 30p/60i conundrum. Back to the drawing boards for you.
Anyway, I haven't seen a single example (albeit in the compressed streaming footage online) of any aliasing OR interlacing distortions.
Excuse me for using improper terms, I am not as well versed as I wish I was.
According to Wikepedia --- "Jaggies" is the informal name for artifacts in raster images, most frequently from aliasing, which in turn is often caused by non-linear mixing effects producing high-frequency components and/or missing or poor anti-aliasing filtering prior to sampling.
Anyway, to make a long story short, I have now shot with the camcorder for 2 days and what I am seeing in excess are jaggies on telephone cables, white lines in the streets, building edges etc. much worse than any camcorder I have ever seen. The best way to describe it is to compare its look to that of a standard definition tv show being displayed on a high definition 55" LCD TV. When I view such programming, I see jaggies all over the place. Same here with this Sony. I own a Canon 5D MKII and do not use that camera as a camcorder for exactly this reason. It does the jaggie deal as well and is known for that. I did some footage yesterday comparing the two side by side. The Sony was a bit worse. On the other hand, I see a lot of this on the news these days when they go on location. It appears as if they are using cheaper, more consumer oriented cameras due to budget constraints. What a shame.
I HAVE read that the way the Sony shoots 30p and wraps into a 60i container is supposed to eliminate such artifacts since 30p is progressive and it is then viewed on a progressive LCD TV set. I would also assume that since it's a camcorder it would have more aggressive filtration than a 5DMKII. If I am wrong in these assumptions, I apologize in advance.
You say you haven't seen any interlacing or aliasing distortions. Have you seen anything on a large screen HDTV? If all you have seen are online samples, with all due respect, you have not seen what this camcorder looks like. I am sorry but viewing footage only online gives no indication of what a camcorder can or cannot do.
For what it's worth, there is another unrelated problem that I have been seeing with the camcorder that I have had the opportunity to borrow...every once in a while, more times than I care to report, the buttons just freeze up. I can press the menu button, nothing happens, press a different button, nothing happens, wait a few minutes and press one of them again and all is well. Several minutes later, some button, maybe one of the above, maybe another...again, nothing. One time the start/stop button wouldn't even let me stop the video I was recording. None of the other buttons did anything either. I had to turn the camcorder off and then back on again to gain back control of it. So either this camera that I have has some issues, or there is a software problem with them. Time will tell. I suppose too that since I do have the button problem AND the jaggie problem that perhaps I am playing with a defective camcorder...or perhaps there ARE software issues related to both problems. Or, perhaps since this problem seems to 'usually' occur shortly after I have recorded something, maybe the camcorder doesn't allow you to do the buttons until it is done writing the footage to the card (?). Resetting the camcorder to its defaults did nothing to correct anything btw.