On Wed, Sep 12, 2012 at 10:01 PM, Doug Franklin <[email protected]> wrote:
> On 2012-09-12 19:12, Bruce Walker wrote:
>
>> I don't think this is yet practical. Assuming the camera has built-in
>> Verizon 4G LTE, and you shoot 400 RAWs in one outing, your camera will
>> be pushing files up to the cloud for more than 50 minutes.
>
>
> I'd be happy enough with 802.11b/g, or especially /n, to a server running on
> a laptop, if the camera would opportunistically send files over as
> continuously as possible.  I have no idea how much power that requires as
> compared to the power consumed by the rest of the camera system.

The Eye-Fi cards will do this. They do eat up some power but I haven't
noticed the drain myself, though at least one other PDMLer finds it
excessive.

The low effective transfer rate and high latency make sending
real-time RAWs impractical for me though. I think the puny CPU in the
chip can't handle efficient TCP/IP so it takes 15 seconds or more to
send a single K20D RAW (8 Mb) and a K-5 RAW would be awful (25 Mb). I
use it to send low-rez JPEG previews instead and that works reasonably
well.

If you don't need real-time, the card works fine; just slower than the
available bandwidth would imply.

-- 
-bmw

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