Nikon D70 for Night Photography

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On Jan 24, 3:31 pm, "Ed Ruf (REPLY to E-MAIL IN SIG!)"
<egruf_usen....RemoveThis@cox.net> wrote:
> On Wed, 24 Jan 2007 07:45:55 -0500, in rec.photo.digital M-M
>
> <nospam.....RemoveThis@ny.more> wrote:
> >The D80 can go up to ISO 3200 by turning off ISO AUTO. Not sure about
> >the D70.Not quite. This is ISO 1600 pushed in the camera, same as in the D200.
> That's why when you select above ISO 1600 it displays H.XX.
> --
> Ed Ruf (Usen...@EdwardGRuf.com)http://edwardgruf.com/Digital_Photography/General/index.html

Orion goes better with landscape, but no smoke. Unfortunately I have
the landscape and smoke and a half full moon here:
http://dbdimages.smugmug.com/gallery/1491201#122777014

This is Olympus E500 at 40sec of ISO 100 with noise reduction on, white
balance to correct color cast from smoke.

The picture was taken from Dante's view in Death Valley Nat'l Park at
4am on Jan. 10. Unfortunately, this was downwind from the first major
Malibu fire of the year. The original is a 7600x3600 pixel panorama.
Brush fire smoke provides a soft diffuse light for the landscape, but
doesn't help the night sky. The near foreground ( lower corners) is at
about 5600' elevetion. The close edge of the salt pan is at -278' and
the peak below Orion is 11,049'.

Dale B. Dalrymple
http://dbdimages.com
 >> Stay informed about: Nikon D70 for Night Photography 

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 >> Stay informed about: Nikon D70 for Night Photography 

M-M <nospam.m-m.RemoveThis@ny.more> writes:
> Aren't all the ISO choices simply software interpolation? What is the
> difference between what the camera does to achieve e.g. ISO 800 vs. ISO
> 2000?

Higher iso = the camera cranks up the analog gain on the ccd sense
amplifiers.
 >> Stay informed about: Nikon D70 for Night Photography 

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 >> Stay informed about: Nikon D70 for Night Photography 

M-M wrote:
> In article <7xk5zadeic.fsf.DeleteThis@ruckus.brouhaha.com>,
> Paul Rubin <http://phr.cx@NOSPAM.invalid> wrote:
>
>> M-M <nospam.m-m.DeleteThis@ny.more> writes:
>>> Aren't all the ISO choices simply software interpolation? What is the
>>> difference between what the camera does to achieve e.g. ISO 800 vs. ISO
>>> 2000?
>> Higher iso = the camera cranks up the analog gain on the ccd sense
>> amplifiers.
>
>
> So why does the camera mean by H.XX for ISO >1600?

Means they'll let you go up to ISO 3200 in 1/3 stop increments, but they
won't come right out and call it ISO 3200. I don't know if this means
there are formal standards for stating ISO speeds for digital cameras,
or if it's their own choice.
 >> Stay informed about: Nikon D70 for Night Photography 

In article <45b92092$0$15011$8046368a@newsreader.iphouse.net>,
David Dyer-Bennet <dd-b.DeleteThis@dd-b.net> wrote:

> M-M wrote:
> > In article <7xk5zadeic.fsf.DeleteThis@ruckus.brouhaha.com>,
> > Paul Rubin <http://phr.cx@NOSPAM.invalid> wrote:
> >
> >> M-M <nospam.m-m.DeleteThis@ny.more> writes:
> >>> Aren't all the ISO choices simply software interpolation? What is the
> >>> difference between what the camera does to achieve e.g. ISO 800 vs. ISO
> >>> 2000?
> >> Higher iso = the camera cranks up the analog gain on the ccd sense
> >> amplifiers.
> >
> >
> > So why does the camera mean by H.XX for ISO >1600?
>
> Means they'll let you go up to ISO 3200 in 1/3 stop increments, but they
> won't come right out and call it ISO 3200. I don't know if this means
> there are formal standards for stating ISO speeds for digital cameras,
> or if it's their own choice.

No matter what it is or how it is done, it works. My D-50 is almost
free of noise at 1600 but my SIL's D70 is noticeable at 800.

I have taken some great pre-dawn and after dusk shots with the D50.

--
"When fascism comes to America, it will be wrapped in the flag and
carrying a cross."
Sinclair Lewis
 >> Stay informed about: Nikon D70 for Night Photography 

On Jan 23, 11:44 pm, microc....RemoveThis@anonymousspeech.com wrote:
> Adjusting the D70 to 1600 ASA makes it great for night photography. I
....
> (jeffrey dach drdach.) Is there a way to push the D-70 to 3200 ASA? Any
> other suggested adjustments to optimize for night photography?
>
> microchip

Why would you want to use high ASA with its higher noise instead of
longer exposure? Your example of Orion is a subject that is not moving.
Then you just need to make the camera not move during the exposure.
Some DSLRs provide a noise calcelling function to remove hot pixel
noise during long exposures.

Dale B. Dalrymple
http://dbdimages.com
 >> Stay informed about: Nikon D70 for Night Photography 

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 >> Stay informed about: Nikon D70 for Night Photography 

On 25 Jan 2007 17:23:32 -0800, "dbd" <dbd DeleteThis @ieee.org> wrote:

>
>
>On Jan 23, 11:44 pm, microc... DeleteThis @anonymousspeech.com wrote:
>> Adjusting the D70 to 1600 ASA makes it great for night photography. I
>...
>> (jeffrey dach drdach.) Is there a way to push the D-70 to 3200 ASA? Any
>> other suggested adjustments to optimize for night photography?
>>
>> microchip
>
>Why would you want to use high ASA with its higher noise instead of
>longer exposure? Your example of Orion is a subject that is not moving.
>Then you just need to make the camera not move during the exposure.
>Some DSLRs provide a noise calcelling function to remove hot pixel
>noise during long exposures.
>
>Dale B. Dalrymple
>http://dbdimages.com


Someone recently complained that the NR feture on the D200 prevented
the camera on a telescope from accuratley taking night time pictures
of the sky. It apparently confused the camea into thinking that the
starts were noise and eliminated some starts. The poster complained
to Nikon and said they ignored his request to put a fix in the
firmware. He later stated that he found a work around. He would take
his picture, (Long Exposure of Several Minutes) Then as soon as the
sutter closed he would power off the camera. Apparently this turning
off of the camera forces it to write what it has in memory and avoids
the NR filter from running. I tried it and it does dump whats in
memory and prevent the NR filter from running. I wonder however after
seeing some of your night shots in this thread why he was having
issues. It looks like the camera does not remove or change the sky
and knows the difference between stars and camera noise. I dont know
because I dont have mine on a telescope. Interesting thread and nice
night shots guys.
 >> Stay informed about: Nikon D70 for Night Photography 

On Sun, 28 Jan 2007 12:43:15 -0500, LuvLatins <LuvLatins.RemoveThis@mexico.com>
wrote:

>On 25 Jan 2007 17:23:32 -0800, "dbd" <dbd.RemoveThis@ieee.org> wrote:
>
>>
>>
>>On Jan 23, 11:44 pm, microc....RemoveThis@anonymousspeech.com wrote:
>>> Adjusting the D70 to 1600 ASA makes it great for night photography. I
>>...
>>> (jeffrey dach drdach.) Is there a way to push the D-70 to 3200 ASA? Any
>>> other suggested adjustments to optimize for night photography?
>>>
>>> microchip
>>
>>Why would you want to use high ASA with its higher noise instead of
>>longer exposure? Your example of Orion is a subject that is not moving.
>>Then you just need to make the camera not move during the exposure.
>>Some DSLRs provide a noise calcelling function to remove hot pixel
>>noise during long exposures.
>>
>>Dale B. Dalrymple
>>http://dbdimages.com
>
>
>Someone recently complained that the NR feture on the D200 prevented
>the camera on a telescope from accuratley taking night time pictures
>of the sky. It apparently confused the camea into thinking that the

The NR does not work that way. The camera taks a photo, then closes
the shutter and takes another photo of the same duration with the idea
that the noise will be consistent in both frames. It then subtracts
the second frame from the first and saves the processed image. As the
noise is thermal in nature I'm a bit surprised that it works quite
well.


>starts were noise and eliminated some starts. The poster complained
>to Nikon and said they ignored his request to put a fix in the
>firmware. He later stated that he found a work around. He would take
>his picture, (Long Exposure of Several Minutes) Then as soon as the

If he was doing that it'd make more sense to just turn off the NR. It
should be off by default.

>sutter closed he would power off the camera. Apparently this turning
>off of the camera forces it to write what it has in memory and avoids
>the NR filter from running. I tried it and it does dump whats in
>memory and prevent the NR filter from running. I wonder however after
>seeing some of your night shots in this thread why he was having
>issues. It looks like the camera does not remove or change the sky
>and knows the difference between stars and camera noise. I dont know
>because I dont have mine on a telescope. Interesting thread and nice
>night shots guys.
Roger Halstead (K8RI & ARRL life member)
(N833R, S# CD-2 Worlds oldest Debonair)
www.rogerhalstead.com
 >> Stay informed about: Nikon D70 for Night Photography 

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