I've been looking into that and it seems that all Pentax cameras that
have been tested recently have about a 36 mb/s write speed regardless of
how fast the card is, though they can't write faster than the card will
accept the data.
I got curious since I don't shoot Nikon, so I haven't been looking for
write speed tests on any Nikon cameras. Well I couldn't find a Nikon
810 tests, but the D800 tops out at about 39 mb/s, on the one I could
find. Doesn't seem to blisteringly faster than the K-1.
Using the actual numbers not my rounded numbers the Nikon seems to be
about ~7% faster than the Pentax.
Now Nikon might have upped the buss speed when moving from the D800 to
the D810, but it doesn't seem that likely.
On 10/10/2017 5:10 PM, Mark C wrote:
FWIW - I just ran some tests with my K1 shooting DNGS and it takes 27
to 28 seconds to clear the buffer. It probably feels like 5 minutes
when things are happening, though. I'm using 64 gig Sandisk Extreme
Pro UHS-I cards, rated for 90 mb/sec write speeds. The are much faster
cards out there though I don't know if the K1 can take advantage of
higher speed cards (or even if it takes advantage of this card.) If
you really are experiencing several minutes of write time it may be
the card.
Overall I agree with your comments. File saves are on the slow side
and the AF point configuration leaves a lot to be desired. AF in
liveview mode is very slow - verging on unusable when shooting macros.
There's room for improvement to be sure, but still a fine camera.
Mark
Larry Colen wrote:
In many many ways the K-1 is an amazing camera. If all I did was
portraits, landscapes and still lifes it would be damn near
unbeatable, especially for the price.
However, for action photography, it can really suck donkey balls. The
focusing is a huge improvement over the K-3ii, but the focus points
don't cover nearly enough of the screen, especially if you want to
place critical compositional elements at the "third points". Despite
the improvements over the K-3, focus speed is still way too slow,
especially compared to when I've shot a friend's Nikon 810.
My biggest gripe is the bus speed. Did they really think that people
would buy a full frame camera and always shoot JPEGs? I was
photographing dance competitions this weekend. Things happen fast,
unpredictably, and often in rapid succession, particularly when there
is more than one couple dancing at a time. After about a minute or
two the buffer will fill up, and then take something like five
minutes to empty. Once it fills up, it takes something like 30
seconds before it's ready to shoot again, and I have no idea of
whether there's room in the buffer or not. I just have to press the
shutter and wonder whether it's not locking focus, or just still
emptying the buffer.
Gah! Every time I try to shoot action, I'm tempted to switch to
Nikon. Unfortunately, there's about 15,000 reasons why I can't.
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