Saturday, February 8, 2014

HD Camcorders and High Optical Zooms !?




Mehran Hoo


Can someone give me some idea why camcorders with HD recording capability have optical zooms like 10-15x and there can't be found one with higher optical zooms?
Is there any technical limit on this?



Answer
The bigger the zoom range the bigger the compormises, so wide angles may become warped looking or the tele end may become soft.

On regular DV camcorders the resolution is usually .08mp (04.MP being used for the image) for HD camcorders it is around 2MP.

So HDV is more critical, you may not see the softness or more likely, colour fringing on an SD camera, but it would show on an HD camera.

Bear in mind the viewing environment as well. Flaws on a 28in screen won't be as obvious as on a 50in HD screen.

Another issue, particularly with consumer cameras is the small sensor, as a lens gets longer it suffers from f-drop (a reduced maximum aperture) the tiny 1/6 and 1/4.5 sensors packed to HD resolution will get diffraction (picture softening) at smaller apertures.

15x is acutally loads and loads anyway. You would need a steady tripod, camera remote and a big pile of sandbags to avoid shake above this. It's also harder to do smooth movements with such a big zoom.

Sony 40X optical Zoom camcorder?




everlastin


hey i got a sony 40x optical zoom camcorder that i bought from best buy and i have a really big project for my literature class and me and my friends are going to be doing a "talk show" for our project and im the only one who has a camcorder so we'll be using mine and i was wondering how i connect this certain camcorder to the PC so that we may edit the video and be able to watch it all on my pc... i thought a USB cord came with it but it doesnt what should i buy!~? plz help 10 points for best answer!


Answer
There are many Sony Handycams with 40x optical zoom, so a model number would help make sure you get the best answer. First, your camcorder needs to be digital in order to plug it into a PC. An analog camcorder can still be used, but you would need some sort of capture device to convert the video to digital so it can be recorded onto your PC.

If your camcorder is digital, it likely has a USB Mini-B port (see the smaller end of the cable in the first image in my source). This is a common cable you can find almost anywhere. Just be sure you do not get a USB A/B cable instead (shown in the second image in my source). The difference is B versus Mini-B.




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