PentaxLife Tag: BULB

Vitali on "Why do the results for Bulb or Long exposure take so long to display?"

Vitali — Tue, 23 Oct 2007 11:55:56 +0000

zntgrg is right. Turn off noise reduction.

Your friend's D80 has this feature too but it's either not turned on by default or you friend has turned it off by himself.

zntgrg on "Why do the results for Bulb or Long exposure take so long to display?"

zntgrg — Tue, 23 Oct 2007 08:16:43 +0000

On long exposures Pentax shot twice: a first shot with shutter open, and a second one totally black.

It's a technique called "black mask", an effective noise reduction system: you can disable it in the custom menu, but you can experience strange hot spots in your shot.

mattindustries on "Why do the results for Bulb or Long exposure take so long to display?"

mattindustries — Mon, 22 Oct 2007 18:33:07 +0000

I doubt it has anything to do with the 22bit A/D conversion because the k100d does this as well. I don't know why though.

prasanth on "Why do the results for Bulb or Long exposure take so long to display?"

prasanth — Mon, 22 Oct 2007 14:36:06 +0000

My question is this. I take a lot of night photography where I use either bulb, or exposures which are >3seconds. My friend and I usually go out, and he's got a D80.

Anyway, after say we both take a 30 second shot, he can pretty much instantaneously review his shot after the shot is done. Where as me, I sometimes have to wait for about 10-15 or more seconds longer, after the shot has ended to be able to review my shot. Why does it take so long?

I'm wondering if it has to do anything with the 22bit A/D conversion taking place? :(

Notes:
We both usually shoot RAW, cards are pretty much the same, if anything mine is faster. (2GB SanDisk Extreme III) Same results when shooting in jpeg too, but I have to experiment and see if it's less waiting. Also the lesser the exposure length, the less time I have to wait after the shot ends to review the shot. I know there's many friggin' variables involved in a process like this, I mean these aren't even the same cameras, but I'm just looking for a general answer... if anyone knows one.

Thanks a lot,
PV