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FWIW some camcorders have "Tracking Focus" as well. This is slightly different in that you select the object via the LCD touchscreen and then as it moves, the focus keeps up.
Conventional AF, by comparison, really needs the subject to be quite large so it can maintain the focus.
DSLRs are not often good for Video.... while their video-quality is excellent, it needs quite some skill to get it right.
Camcorders are designed for non-film-makers (mostly) and should be more-forgiving.
I'm not sure what size you are filming.... I expect jewellery to be very small, so to show the sparkle you will need high magnification. This results in needing a lot of light and often the lens ( and cameraman!) will get in the way; so you may have to think about a ring-light ( which attaches to the lens ), so the light is quite close (and bright), giving you a greater depth of focus. However, it may affect the sparkle- something to experiment with.
You can add close-up lenses ( esp. to DSLRs - which will accept close-up tubes, bellows etc. )..... and for extreme close-up this may be better than a camcorder (Also, you can buy "expensive" Macro-lenses designed for high magnification....
Your chosen Video Editor should allow you to mix sources of films/stills which can ( may?) should add interest to your productions. Don't forget the "human interest" aspect - e.g. when the tea arrives. This allows a break in the filming - and could introduce another skilled person discussing alternative solutions.
Joining a local Film-Making Club might be an introduction to the technical aspects of your filming. Take some examples and see what the suggest.
Cheers. |
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