[optimal] Problem with Nikon D200 continues
- From: CPMC Ophthalmic Diagnostic Center <cpmceyelab@xxxxxxxxxxxxxxxx>
- To: "'optimal@xxxxxxxxxxxxx'" <optimal@xxxxxxxxxxxxx>
- Date: Wed, 23 Oct 2013 15:11:41 -0700
You might try attaching a ground wire from the camera to the slit lamp.
Have verified the SLR is NOT the problem. Something with the microscope it is
attached to. Using different cords, different camera backs 9 D70,D200, D300,
they all work with a lens, independent of the microscope and/or hooked into the
FS3V electronics.
Or try electrically isolating the digital camera from the slit lamp. Is the
dove tail mount plastic or metal? Metal
You may want to try looking through the eyepiece of the digital camera to see
if the shutter blocks your view as it records an image. There is no
beamsplitter on this system. It is built internally into the Nikon photo slit
lamp.
Alternatively, you may want to try propping the mirror out of the way to see if
it isn't synching. Aha, I think THIS is the culprit. When I look at the
schematic of this microscope, there is NO mention of the internal mirror, which
must flip out of the way when the D200 shutter is tripped. However, when I
take the camera back off and observe, this mirror does not flip up as I believe
it should. When I shine a muscle light onto the mirror, I get a bright
reflected image. When I don’t , the image on the monitor is black.
Did you say if there is a review image appearing on the camera's view screen?
It’s not the D200 or D300. When you unhook the SLR from the microscope, and
put a lens on the camera with a memory card, you get an image. When you leave
the camera on the microscope, you get a black image.
You said you could see through the beam splitter. How about hooking up the
D200; then trigger it while you are looking through the beam splitter? Or
similarly, put a lens on the Nikon back, then focus it over the slit lamp to
see if it captures a synched strobe image? Yes, the SLR captures an image
independent of the microscope. Stick a 28mm lens on the D200 and keep it
connected to the microscope electronics, great photo… flash IS working,
observation light IS working.
Another thought, do you have sufficient clearance. Could the mount have been
tightened too much resulting some interference? Are there filters?
Filters and magnification zoom are not the culprit. Clean click stops from
10,10,30 degrees, etc. No filters.
Is there an iris in the beam splitter arm? Are you able to find any sort of
latent image in photoshop? This would at least indicate there is something
being recorded. You could try another Nikon digital camera.
JMG
On Tuesday, October 15, 2013 6:23 PM, CPMC Ophthalmic Diagnostic Center
<cpmceyelab@xxxxxxxxxxxxxxxx<mailto:cpmceyelab@xxxxxxxxxxxxxxxx>> wrote:
Beamsplitter lever, no. It’s built into the mechanism of the slit lamp .
There is no lever
You can look through the camera port and see the room. Nothing is blocking
When I remove from the slit lamp, and look throught the ports of the slit
lamp, using 10,20,30 x magnification, I can see through the lenses and across
the room
So it does not appear that ANYTHING is hanging down or blocking the light.
Denice Barsness, CRA, COMT, ROUB, CDOS, FOPS
Ophthalmic Diagnostic Center
CPMC Department of Ophthalmology
2100 Webster Street Suite 212
San Francisco CA 94115
(415) 600-3937 FAX (415) 600-6563
From: optimal-bounce@xxxxxxxxxxxxx<mailto:optimal-bounce@xxxxxxxxxxxxx>
[mailto:optimal-bounce@xxxxxxxxxxxxx] On Behalf Of George Henry, CRA, PBT
Sent: Tuesday, October 15, 2013 3:34 PM
To: optimal@xxxxxxxxxxxxx<mailto:optimal@xxxxxxxxxxxxx>
Subject: [optimal] Re: Problem with Nikon D200
Does that slit lamp have a beamsplitter lever that must be flipped to direct
the image to the camera port? Has someone inadvertently flipped it?
Take the camera off and look into the camera port with a brightly lit subject
in front of the SL… do you see anything?
George E. Henry, CRA, PBT
Wheaton Eye Clinic, Ltd.
2015 N. Main Street
Wheaton IL 60187
630.588.3615
________________________________
From: optimal-bounce@xxxxxxxxxxxxx<mailto:optimal-bounce@xxxxxxxxxxxxx>
[mailto:optimal-bounce@xxxxxxxxxxxxx] On Behalf Of CPMC Ophthalmic Diagnostic
Center
Sent: Tuesday, October 15, 2013 17:20
To: 'optimal@xxxxxxxxxxxxx'
Subject: [optimal] Re: Problem with Nikon D200
Back to the drawing board. New cables, still no image
MUST be somewhere in the mechanism of the slit lamp itself, as system is
getting power, cable is sending to Camera Control Pro software OK, camera back
works fine when NOT connected to slit lamp, Shutter is tripping, flash is
engaging.
Any more thoughts?
Denice Barsness, CRA, COMT, ROUB, CDOS, FOPS
Ophthalmic Diagnostic Center
CPMC Department of Ophthalmology
2100 Webster Street Suite 212
San Francisco CA 94115
(415) 600-3937 FAX (415) 600-6563
From: CPMC Ophthalmic Diagnostic Center
Sent: Tuesday, October 15, 2013 9:40 AM
To: 'optimal@xxxxxxxxxxxxx'
Subject: RE: [optimal] Re: Problem with Nikon D200
That’s it! Shutter, which I always thought was working, confirmed.
Need new cables!
So grateful to tap into all of the expertise!
Denice
Denice Barsness, CRA, COMT, ROUB, CDOS, FOPS
Ophthalmic Diagnostic Center
CPMC Department of Ophthalmology
2100 Webster Street Suite 212
San Francisco CA 94115
(415) 600-3937 FAX (415) 600-6563
From: optimal-bounce@xxxxxxxxxxxxx<mailto:optimal-bounce@xxxxxxxxxxxxx>
[mailto:optimal-bounce@xxxxxxxxxxxxx] On Behalf Of JamesStrong
Sent: Tuesday, October 15, 2013 9:20 AM
To: optimal@xxxxxxxxxxxxx<mailto:optimal@xxxxxxxxxxxxx>
Subject: [optimal] Re: Problem with Nikon D200
Denice
Have you tried leaving the camera wired to the SL but taking it off the mount
and holding the body toward a ceiling light while looking into the lens mount
and firing it as you would thru the slitlamp?
This way you can rule out mirrow/shutter issues being caused by the
wires/triggers of the SL. Then you're down to software or FW cables. My next
step would be a different FW cable. We ran into a situation like that when we
tried to connect a trigger cable and there was a weird polarity issue thar
reversed the function of the mirror. It locked up when connected and DROPPED
when the shutter was activated.
FWIW - we shoot with the D200 on 1/250 on our old Zeiss SL, a slower sync
shouldn't matter and i know you said none of that has changed.
j-
On Mon, Oct 14, 2013 at 7:15 PM, CPMC Ophthalmic Diagnostic Center
<cpmceyelab@xxxxxxxxxxxxxxxx<mailto:cpmceyelab@xxxxxxxxxxxxxxxx>> wrote:
Yes, that’s the default. No card in the camera, firewired to computer. Black
image
Unhook camera, slap on a lens, put in a memory card, wal la, a photo!
Denice Barsness, CRA, COMT, ROUB, CDOS, FOPS
Ophthalmic Diagnostic Center
CPMC Department of Ophthalmology
2100 Webster Street Suite 212
San Francisco CA 94115
(415) 600-3937 FAX (415) 600-6563
From: optimal-bounce@xxxxxxxxxxxxx<mailto:optimal-bounce@xxxxxxxxxxxxx>
[mailto:optimal-bounce@xxxxxxxxxxxxx<mailto:optimal-bounce@xxxxxxxxxxxxx>] On
Behalf Of John Gerty
Sent: Monday, October 14, 2013 4:09 PM
To: optimal@xxxxxxxxxxxxx<mailto:optimal@xxxxxxxxxxxxx>
Subject: [optimal] Re: Problem with Nikon D200
Have you tried shooting without the card in the camera? Is there a setting
which directs the output? With our home brewed system we do not have a memory
card in the camera back, only a hard wired connection.
JMG
On Monday, October 14, 2013 5:13 PM, CPMC Ophthalmic Diagnostic Center
<cpmceyelab@xxxxxxxxxxxxxxxx<mailto:cpmceyelab@xxxxxxxxxxxxxxxx>> wrote:
Camera works fine disconnected from firewire, with card
Flash, shutter, all OK
USB and Firewire cable are being recognized by computer as being valid and live
However, when card in slit lamp, connected to Firewire, photos are black
Checked settings. Shutter at 125. ISO 400. Nothing’s changed
Denice Barsness, CRA, COMT, ROUB, CDOS, FOPS
Ophthalmic Diagnostic Center
CPMC Department of Ophthalmology
2100 Webster Street Suite 212
San Francisco CA 94115
(415) 600-3937 FAX (415) 600-6563
From: optimal-bounce@xxxxxxxxxxxxx<mailto:optimal-bounce@xxxxxxxxxxxxx>
[mailto:optimal-bounce@xxxxxxxxxxxxx] On Behalf Of John Gerty
Sent: Monday, October 14, 2013 12:15 PM
To: optimal@xxxxxxxxxxxxx<mailto:optimal@xxxxxxxxxxxxx>
Subject: [optimal] Re: Problem with Nikon D200
Short term, see if your camera can write to an SD card or whatever card it
uses. You could then transfer the images to your CPU this way.
Specifically, what shutter speed are you using?
Is there an X-synch setting which may have been turned off or reset somehow?
Do you see a preview image on the camera's screen?
I have had cables fail and camera plugs fail. Firewire, especially the small
firewire plugs are more prone to this than USB.
Turn everything off, then spray contact cleaner on all the connections, plug
and unplug those connectors while they are wet with the cleaner. Careful, it
might be flammable and definitely bad to breathe.
JMG
On Monday, October 14, 2013 1:50 PM, CPMC Ophthalmic Diagnostic Center
<cpmceyelab@xxxxxxxxxxxxxxxx<mailto:cpmceyelab@xxxxxxxxxxxxxxxx>> wrote:
Help!
My OLD Nikon FS3V slit lamp camera with D200 Nikon Back
Have double/triple checked all settings on D200
Rechecked, rehooked cables
Flash is engaging
Shutter opens. You hear it
Fireware sending BLACK image to computer. Something is blocking light from
camera to Firewire to computer
Bad Firewire cable? Flash appears to be going off fine. SOUND and setting of
shutter OK
Your thoughts before I cry uncle and spend a lifetime on the phone with Nikon?
Denice Barsness, CRA, COMT, ROUB, CDOS, FOPS
Ophthalmic Diagnostic Center
CPMC Department of Ophthalmology
2100 Webster Street Suite 212
San Francisco CA 94115
(415) 600-3937 FAX (415) 600-6563
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