Q. I want to know what makes professional camcorders so much better. They are all 1080p, what else is there to justify a price diffrence?
A. Hi Matthew:
There is a "laundry list" of features that separate a typical under-$1000 consumer model with pro-level camcorders that start out costing 2-3 times that, and then go way-past the $50,000 price tag.
(Three separate video sensors instead of just one, larger sensor size, faster video bit-rate storage ―with less compression― for better quality image, 2- & 4-channel XLR audio connections & controls, rugged construction for heavy-duty daily use, larger diameter lenses & better optics, on-board technical adjustments & monitor features that rival a TV engineering rack, larger battery packs that can run all day, etc.)
But since your Question mentions the common-factor of "1080" (not all HD cameras are 1080p, some are 1080i or 720p) I'll separate a few more details that are just video-related, since that "sameness" has you wondering.
Broadcast quality cameras start out with 3 image sensors (CCD or CMOS), one for each "primary" color (Red, Green, Blue). And special beam-splitters or prisms with precision alignment feed the lens image to these sensors. Since video is processed and digitized using separate color & brightness info, the 3 separate signals allow the best quality and adjustment control. (Right there you are tripling most of your camera cost.)
Larger sensors catch more light, and have less "video noise" in darker settings. Consumer sensors are typically less than =half= the size of a dime! Each of the 3 image chips in a pro-camera are about the size of a U.S.quarter, and can have over 10-times the surface area of a small camcorder's 4mm x 3mm chip. (And using 3 pro-size chips triples that light-gathering area to 30x bigger!)
Larger sensors can make use of larger diameter lens elements, which allow more light to the chips. Bigger optics using high-grade optical-quality glass elements are more expensive, and just the large zoom lens on a TV studio camera or sports field camera can cost over $50,000 without the camera body. And changeable lens mounts & all the needed mechanical/electrical connections cost more.
And consumer camcorders use higher levels of video compression than pro-camcorders, to save on storage cost & space, and the required electronics for fast video signal processing. (This benchmark is called bit-rate, and is measured in Mbit/s or Mbps [Megabits per second, not MegaBytes].) SD memory cards' read/write speed tend to be rated in MegaBytes/sec; e.g., Class 10 = 10-MB/s minimum, which would equal 80-Mbits/s, since there are 8-bits per Byte.
Higher compression just "samples" & keeps a fraction of the actual video frames & fine detail. So, for every second of video captured, your "HiDef" consumer camcorder is only storing about 3 full-detail frames (called I-frames), and is using math algorithms to only keep "predictive" information (P-frames & B-frames) about the 2-dozen or so discarded frames.
Pro cameras can utilize either un-compressed or low-compression video with better fidelity (less interpolated or "guessed at" video data).
So, basically, not all "1080" HD is equal.
hope this helps,
--Dennis C.
There is a "laundry list" of features that separate a typical under-$1000 consumer model with pro-level camcorders that start out costing 2-3 times that, and then go way-past the $50,000 price tag.
(Three separate video sensors instead of just one, larger sensor size, faster video bit-rate storage ―with less compression― for better quality image, 2- & 4-channel XLR audio connections & controls, rugged construction for heavy-duty daily use, larger diameter lenses & better optics, on-board technical adjustments & monitor features that rival a TV engineering rack, larger battery packs that can run all day, etc.)
But since your Question mentions the common-factor of "1080" (not all HD cameras are 1080p, some are 1080i or 720p) I'll separate a few more details that are just video-related, since that "sameness" has you wondering.
Broadcast quality cameras start out with 3 image sensors (CCD or CMOS), one for each "primary" color (Red, Green, Blue). And special beam-splitters or prisms with precision alignment feed the lens image to these sensors. Since video is processed and digitized using separate color & brightness info, the 3 separate signals allow the best quality and adjustment control. (Right there you are tripling most of your camera cost.)
Larger sensors catch more light, and have less "video noise" in darker settings. Consumer sensors are typically less than =half= the size of a dime! Each of the 3 image chips in a pro-camera are about the size of a U.S.quarter, and can have over 10-times the surface area of a small camcorder's 4mm x 3mm chip. (And using 3 pro-size chips triples that light-gathering area to 30x bigger!)
Larger sensors can make use of larger diameter lens elements, which allow more light to the chips. Bigger optics using high-grade optical-quality glass elements are more expensive, and just the large zoom lens on a TV studio camera or sports field camera can cost over $50,000 without the camera body. And changeable lens mounts & all the needed mechanical/electrical connections cost more.
And consumer camcorders use higher levels of video compression than pro-camcorders, to save on storage cost & space, and the required electronics for fast video signal processing. (This benchmark is called bit-rate, and is measured in Mbit/s or Mbps [Megabits per second, not MegaBytes].) SD memory cards' read/write speed tend to be rated in MegaBytes/sec; e.g., Class 10 = 10-MB/s minimum, which would equal 80-Mbits/s, since there are 8-bits per Byte.
Higher compression just "samples" & keeps a fraction of the actual video frames & fine detail. So, for every second of video captured, your "HiDef" consumer camcorder is only storing about 3 full-detail frames (called I-frames), and is using math algorithms to only keep "predictive" information (P-frames & B-frames) about the 2-dozen or so discarded frames.
Pro cameras can utilize either un-compressed or low-compression video with better fidelity (less interpolated or "guessed at" video data).
So, basically, not all "1080" HD is equal.
hope this helps,
--Dennis C.
What is a Good HD Professional Camcorder that can be used to Film Skateboarding?
Q. What is a Good HD Professional Camcorder that can be used to Film Skateboarding?
doesnt even have to be hd but whats a good one?
doesnt even have to be hd but whats a good one?
A. I would suggest Sony HDR-FX7 3-CMOS Sensor HDV High-Definition Handycam Camcorder with 20x Optical Zoom.Great HD Professional Camcorder which not too expensive.
http://www.amazon.com/gp/product/B000IBDWNS?ie=UTF8&tag=computer0bd-20&linkCode=as2&camp=1789&creative=390957&creativeASIN=B000IBDWNS
http://www.amazon.com/gp/product/B000IBDWNS?ie=UTF8&tag=computer0bd-20&linkCode=as2&camp=1789&creative=390957&creativeASIN=B000IBDWNS
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