D70 picture dust marks?

I had a nearly identical problem with my new D70 except that the dust marks
were visible as smudges with a long lens and pretty much not visible with a
normal lens. Gently blowing off the low pass filter did solve the problem
and is a pretty easy procedure following the instructions in the manual. I
don't have an explanation as to why the smudges only appeared with the long
lens and are less so with normal lenses.

I was taking pictures at an airshow so the spots really showed up, but
PhotoShop easily corrected the problem on those I wanted to keep.

Hope this helps.

Dan

I had a nearly identical problem with my new D70 except that the dust marks
were visible as smudges with a long lens and pretty much not visible with a
normal lens. Gently blowing off the low pass filter did solve the problem
and is a pretty easy procedure following the instructions in the manual. I
don't have an explanation as to why the smudges only appeared with the long
lens and are less so with normal lenses.

I was taking pictures at an airshow so the spots really showed up, but
PhotoShop easily corrected the problem on those I wanted to keep.

Hope this helps.

Dan

"ice" wrote in message
om...
If it is in the low pass filter, the manaul recommends that you lock
up the mirror and blow some air using a blower brush, minus the brush
bit. How safe is this to do? As the camera is only a few months old,
would it be worth returning to the shop?

100% normal, for all dslrs

These sites are decent for both technique and pointers to supplies:

http://bythom.com/cleaning.htm

http://www.pbase.com/copperhill/ccd_cleaning (click on each "photo" for
descriptions)

My approach (when I finally get dust bunnies - none yet) is to try blowing,
then I'll attempt a ccd cleaning if blowing doesn't do it, and probably get
it cleaned/serviced by nikon in 1-2 years.

"ice" wrote in message
om...
If it is in the low pass filter, the manaul recommends that you lock
up the mirror and blow some air using a blower brush, minus the brush
bit. How safe is this to do? As the camera is only a few months old,
would it be worth returning to the shop?

100% normal, for all dslrs

These sites are decent for both technique and pointers to supplies:

http://bythom.com/cleaning.htm

http://www.pbase.com/copperhill/ccd_cleaning (click on each "photo" for
descriptions)

My approach (when I finally get dust bunnies - none yet) is to try blowing,
then I'll attempt a ccd cleaning if blowing doesn't do it, and probably get
it cleaned/serviced by nikon in 1-2 years.

Hello Dan

thanks for the reply.

Good to know i am not the only one - will try the clean

thank you
Callum

"Dan Leskinen" wrote in message
...
I had a nearly identical problem with my new D70 except that the dust
marks
were visible as smudges with a long lens and pretty much not visible with
a
normal lens. Gently blowing off the low pass filter did solve the problem
and is a pretty easy procedure following the instructions in the manual. I
don't have an explanation as to why the smudges only appeared with the
long
lens and are less so with normal lenses.

I was taking pictures at an airshow so the spots really showed up, but
PhotoShop easily corrected the problem on those I wanted to keep.

Hope this helps.

Dan

Hello Dan

thanks for the reply.

Good to know i am not the only one - will try the clean

thank you
Callum

"Dan Leskinen" wrote in message
...
I had a nearly identical problem with my new D70 except that the dust
marks
were visible as smudges with a long lens and pretty much not visible with
a
normal lens. Gently blowing off the low pass filter did solve the problem
and is a pretty easy procedure following the instructions in the manual. I
don't have an explanation as to why the smudges only appeared with the
long
lens and are less so with normal lenses.

I was taking pictures at an airshow so the spots really showed up, but
PhotoShop easily corrected the problem on those I wanted to keep.

Hope this helps.

Dan

Subject: D70 picture dust marks?
From: "John S"
Date: 7/27/2004 10:38 AM Pacific Standard Time
Message-id:


"ice" wrote in message
. com...
If it is in the low pass filter, the manaul recommends that you lock
up the mirror and blow some air using a blower brush, minus the brush
bit. How safe is this to do? As the camera is only a few months old,
would it be worth returning to the shop?

100% normal, for all dslrs

These sites are decent for both technique and pointers to supplies:

http://bythom.com/cleaning.htm

http://www.pbase.com/copperhill/ccd_cleaning (click on each "photo" for
descriptions)

My approach (when I finally get dust bunnies - none yet) is to try blowing,
then I'll attempt a ccd cleaning if blowing doesn't do it, and probably get
it cleaned/serviced by nikon in 1-2 years.


It makes a cetrain amount of sense to use a zoom lens and NEVER interchange it
allowing dust to enter the camera. I ordered my D70 with zoom and am selling
all my Nikor fixed focal length lenses on e-bay. Well I may keep the 180mm
F/2.8 (s)





Arthur Kramer
344th BG 494th BS
England, France, Belgium, Holland, Germany
Visit my WW II B-26 website at:
http://www.coastcomp.com/artkramer

"ArtKramr" wrote in message
...
It makes a cetrain amount of sense to use a zoom lens and NEVER
interchange it
allowing dust to enter the camera. I ordered my D70 with zoom and am
selling
all my Nikor fixed focal length lenses on e-bay. Well I may keep the 180mm
F/2.8 (s)

Hm. That's kinda the point of a SLR (swapping lenses so you have the right
one for the shot(s))

just don't do it in a dust storm
point the camera down
power it off and *wait* a few seconds for the ccd to discharge its static
charge
get new lens ready (cap off)
swap lenses
put cap on swapped out lens

total time exposed, maybe 2 seconds.

In article ,
(ArtKramr) writes:

It makes a cetrain amount of sense to use a zoom lens and NEVER
interchange it
allowing dust to enter the camera. I ordered my D70 with zoom
and am selling
all my Nikor fixed focal length lenses on e-bay. Well I may keep
the 180mm F/2.8 (s)

Fixed focal length lenses generally are sharper. Quality lenses
contain multiple elements (pieces of glass). With their greater
functionality, zoom lenses typically have a greater number of
elements than fixed focal length lenses. Lens sharpness
_decreases_ with each added lens element.

In addition, wide aperture (small f-stop number) usually is
less expensive to create in a fixed focal length lens. Usually
some trade must be made among zoom range, aperture and cost.
And fixed focal length lenses usually are simpler, lighter and
more rugged -- less to break.

IMO a zoom lens used with a film SLR has more utility than a
zoom lens used with a dSLR having electronic zoom capability.

YMMV.

Richard Ballard MSEE CNA4 KD0AZ
--
Consultant specializing in computer networks, imaging & security
Listed as rjballard in "Friends & Favorites" at www.amazon.com
Last book review: "Guerrilla Television" by Michael Shamberg

In article ,
(ArtKramr) writes:

It makes a cetrain amount of sense to use a zoom lens and NEVER
interchange it
allowing dust to enter the camera. I ordered my D70 with zoom
and am selling
all my Nikor fixed focal length lenses on e-bay. Well I may keep
the 180mm F/2.8 (s)

Fixed focal length lenses generally are sharper. Quality lenses
contain multiple elements (pieces of glass). With their greater
functionality, zoom lenses typically have a greater number of
elements than fixed focal length lenses. Lens sharpness
_decreases_ with each added lens element.

In addition, wide aperture (small f-stop number) usually is
less expensive to create in a fixed focal length lens. Usually
some trade must be made among zoom range, aperture and cost.
And fixed focal length lenses usually are simpler, lighter and
more rugged -- less to break.

IMO a zoom lens used with a film SLR has more utility than a
zoom lens used with a dSLR having electronic zoom capability.

YMMV.

Richard Ballard MSEE CNA4 KD0AZ
--
Consultant specializing in computer networks, imaging & security
Listed as rjballard in "Friends & Favorites" at www.amazon.com
Last book review: "Guerrilla Television" by Michael Shamberg