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Re: Focal length doubling

COW Forums : Panasonic AF100, DVX100, HMC150

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Guy McLoughlinRe: Focal length doubling
by on Oct 10, 2011 at 4:38:28 pm

>>>The widest Nikon I have is 28mm so I would have to purchase a micro 4/3" wide lens to be covered.

A Nikon 28mm on the AF100 will produce a FOV that is very similar to a 55mm lens on a Full Frame Still Photo camera, so this focal length is more of a "normal" lens for the AF100 camera. If you want something wide, then you would be looking for a lens in the range of 17mm - 7mm. ( Olympus and Panasonic have a few lenses in this range )

>>>Maybe I'll just purchase the new AG-HPX250 10 bit P2 camera and use my brevis 35mm adaptor for the shallow DOF stuff.

It looks like a great camera, but DOF adapters are a huge step backwards from a technology / production perspective. The are very "slow" exposure wise ( you lose 1-2 stops right off the bat ), you have be be very careful about back-focus issues ( or your image is not sharp ), they weigh more than your camera package does ( very clunky to work with ), and you have to keep them juiced up with power to use them. ( more batteries to take care of )

>>>I wish Panasonic would create a 10 bit, 35mm large sensor camera that records to P2.

I expect to see a 10-bit 4:2:2 version of the AF-100 next year, but you will never see Panasonic produce a camera with the 35mm Still Photo Format, as it's not a good format for video. 35mm FF is too large, which means it's too shallow DOF, which means you have to stop down 2 extra stops to achieve the same DOF as a Micro 4/3 camera. Not a problem outdoors during the day, but it's a big issue when shooting indoors. With a Micro 4/3 camera you might light a set with a total of 4,000 watts of light, with a 35mm FF camera you would need 16,000 watts of light to achieve the same DOF.


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