mlitty

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  • in reply to: Advice for shooting still image #278198
    Avatarmlitty
    Member

    If there's no motion in the frame, you can also lengthen your shutter speed pretty far to let mor light in.  The typical rule is 1/60 sec for 30 fps, 1/48 sec for 24fps, etc. but that's to get "natural" looking motion. If you don't have motion or have so very little, you could go with shutter speeds close to 1/30 sec for 30 fps and close to 1/24 sec for 24 fps. That would also increase the light to the camera.

    Another possibility would be to do it as a time lapse with stills and set for properly exposed photos.

    in reply to: Canon G30 – seeking better bokah #214101
    Avatarmlitty
    Member

    The G20 and G30 do have a great shallow depth of field, especially for a camera with this sensor size, but it is only at the maximum focal length. If you watch the focal range as you zoom in, it goes from deep to moderate and then slams to tiny thin at the very longest focal length.

    It’s not convenient but it is better than nothing which is what I’ve seen on some other cameras with this sensor size.

    Yes, DSLRs are great for shallow depth of field. Even my Canon 600D (T3i) is much better than any camcorder I’ve used. For some interviews, I still prefer the DSLR, but for all of the reasons mentioned above and more, the Camcorder is MUCH more convenient for almost every other situation.

    If I need that shallow depth, I set the camera back on a tripod or use the image stabilization, and zoom all the way in.

    in reply to: Canon HF G30 Question on Specs #214100
    Avatarmlitty
    Member

    @Fastfwd I have the G30. 23.98 FPS is available at a wide variety of bitrates in both AVCHD and MP4. For example, at 24Mbps AVCHD, it’s possible to shoot at 59.94i, PF29.97 (29.97p in a 59.94i wrapper), or 23.98P. Shooting MP4, at 24Mbps, 29.97P and 23.98P are available. It can also do MP4 at 59.94fps and 35Mbps.

    Lower bitrates are available at various frame rates. Canon definitely has not done away with 24p. It’s fully supported at high bitrates.

    in reply to: Understanding the ND Filter For Panasonic AG HMC40 #210502
    Avatarmlitty
    Member

    I can only answer B for you.

     

    Panasonic has a patented iris/ND filter mechanism that helps to control the amount of light coming into the sensor when the light is very bright.  When an iris is closed down to near pin hole sized, light refracts causing a loss of resolution.  To avoid this, Panasonic has come up with a combination iris/ND filter that keeps the filter out of the way in the normal range of adjustment and flips the filter in front of the opening when the iris is closed down.  This allows the light to be stopped down further without reducing the size of the hole, thus avoiding degredation in resolution that would normally result from refraction at tiny aperature sizes.

     

     In the normal range of adjustment, it's an iris like any other.  In very bright light, when the iris is closed down, there's an ND filter in there that helps to control the light.  It's automatic, you have no control over it, and no need to control it.

     

    The HMC 80 also has this.  I believe the other HMC cameras do as well?

    You can view the patent and diagrams at http://www.google.de/patents/US20050238348

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