On 11 December 2014 at 20:56, Moose <olymoose@xxxxxxxxx> wrote:
>
> On 12/11/2014 5:39 AM, Ian Nichols wrote:
>
>> On 10 December 2014 at 20:39, Moose <olymoose@xxxxxxxxx> wrote:
>>
>> Writing delay alone? Or long exposure noise reduction, which adds the
>>> original exposure time again?
>>>
>> Probably that as well - I checked and noise reduction was on. Hmm, maybe
>> try turning that off too next time and do all the NR in post.
>>
>
> Not necessarily the best idea. It's a different kind of NR. After the
> exposure, the camera takes a second exposure of equal length with the
> shutter closed, then subtracts the noise of second from first. So it's
> specific to individual sensor system, temperature, etc., unlike generic NR
> in post.
>
> You might try a couple of tests with and without.
Does that still happen with "B"? must admit, I've never been quite clear
about that. Shouldn't really have been needed for most of these as the
exposure time was a fairly modest 3-5 seconds.
Ian
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