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Originally Posted by brendanm My reasoning is that the write speed to tape is around 25mbps compared to hard drive or memory card at 17mbps. |
Chris is right: H.264 compression (used in AVCHD format by high definition camcorders recording to hard drive or memory cards) is more "efficient" - or so they say - than HDV compression (which is what tape-based high definition camcorders use). So the picture quality of a good AVCHD camcorder recording at 17mbps AVCHD can be indistinguishable from HDV @ 25mbps - though this does depend on the camera!
Take a look at this:
High-definition video - Wikipedia, the free encyclopedia
In simple terms, High Definition video (HD) is a higher resolution form of Standard Definition video (SD). HD uses roughly four times as many pixels as SD, in order to provide arguably sharper pictures than SD. However, all things being relative, high-end (professional) SD camcorders will still make nicer pictures than low-end (consumer) HD camcorders. But to consider the consumer market alone, there is now little reason other than budget to buy an SD camcorder.
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Would I want a HD camera over a SD camera (as one day I will own a HD television) and why?
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Yes, for the reason stated above. £300 tends to be the tipping point: the picture quality of a £300 (approximately) HD camcorder is better than that of a £300 SD camcorder. Even if you do not presently own an HDTV, converting high definition video by burning it to a standard DVD to watch on your standard definition TV will give as good it not marginally better results than starting with SD in the first place - plus you can archive the HD video for future use. You can also take advantage of the increased resolution of HD video (compared to SD) when viewing videos on your computer, as computer monitors have greater resolving power than SD televisions.
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Previously we were looking at a Panasonic GS330 (tape) but now my wife likes the smaller sd card type cameras, eg Panasonic SD9.
She has also given me a budget increase to 400 pounds, so what should I buy?
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I've tried both the GS330 and the SD9. I decided to buy an SD9. The picture quality in good lighting conditions (i.e. sunny outdoor settings) is superior on the SD9. Plus I couldn't be bothered with tapes and find memory cards more convenient. Others will differ on that.
For £400, I'd suggest looking the the SD9. Bear in mind that you'll save £50 if you buy the SD9 in-store from a dealer participating in Panasonic's current £50 "cashback" promotion.
The next step up is the Canon HF100 or HF10, both of which are around the £480-£500 mark (at Amaz*n, anyway: the HF10 is normally considerably more expensive than the HF100 and not worth the difference. For some reason Amaz*n are running a special on it at the moment).
A good site to look at is camcorderinfo.com (though it's American so it reviews the US models which differ from the UK / Euro ones in terms of frame-rates - US = 30 frames per second also known as 60i, UK / Euro = 25 frames per second also known as 50i*). You'll see that they prefer the HF100 to the SD9. In my opinion they're a little tough on the SD9, but there you go.
I strongly suggest you try before you buy.
*60i = 30 frames per second, 2 interlaced fields per frame
50i = 25 frames per second, 2 interlaced field per frame
See
Interlace - Wikipedia, the free encyclopedia about "interlaced" video