Question about Nikon Coolpix 4500 Digital Camera

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Image rings when using Coolpix for microscopy

When I attach my Coolpix camera to a microscope I see a series of circles in the image. What are they?

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Under some circumstances when using the Coolpix 4500 attached to a microscope concentric rings are visible as in the below. The COOLPIX 4500 aspherical lens surface is ground to create the ideal curves to gather rays at the focal point with an extremely high accuracy. Such minute lines are not visible in the image taken with a camera alone, however if the camera is used with a microscope, the lines become visible as the depth of field is increased due to the combined F numbers of the camera lens and microscope lenses.

Posted on Aug 30, 2005


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Multi color circle lines on images

I suggest that you perform a manual power resetting and check the operation.

Performing a manual power reset

  1. Turn off the camera.
  2. Remove the battery pack.
  3. Remove the button-sized lithium battery.
  4. Allow the camera to remain without power for 30 seconds.
  5. Reinsert the button-sized lithium battery.
  6. Reinsert the battery pack.
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I have a microscope from National (DC3-163). How can I hook this microscope up to my MAcBook Pro. I only have Motic software that's compatible with Windows. Kris

I did a bit of research, and it looks like the only way that you can use the "Mac OSX compatible" microscope, is using it the same way one would plug in a webcam via USB. Essentially, you can plug in the Microscope, open up the Image Capture Utility, PhotoBooth, or Quicktime/iMovie (I'd recommend one of these two), make sure you have the Capture Device set to the microscope and you'll be able to "project" the image that you are seeing through the microscope onto the computer.
The Motic software does not have a counterpart for the Apple OS, and can only be used if you have a Windows BootCamp Partition, or if you have a Parallels installation of Windows that can use the Motic Software. There are other pieces of software out there that can utilize microscopes, but may not have all the same features as the Motic Bundled software. One that I found that may be of some use is called miXscope. It can be found here: , and it is relatively inexpensive in terms of licensing.
This may also be of some help for selecting compatible microscopes in the future:
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When I take a pic there is a circle on it.It is like green.Could it be the lens.No clue why it is there?

Seems to be a tiny microscopic chemical dot or damage on the lens. Or damage of the image sensor. Did you tried to capture the direct sunlight, or did you photographed the sun (few times totally enough). Surely burned the image sensor. Usually occurs when camera being used in bad whether conditions in out side for long time. In you case better consult a professional camera service personal.

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Focus problem. Coolpix 5000 mounted on Nikon microsocope for photographing tissue slides. Perfect digital images for years; now 90% poorly focused. Image viewed through microscope in perfect focus, image...

If you are initiating the shutter manually, it is quite possible that the camera has become very slightly loose at the F-mount. So, when you press the shutter button, the movement though it may be extremely slight, is shaking the camera at the exact moment you are taking the picture.
Make sure that the camera is tight to the F mount and that the F mount is secure to the microscope.

If you are initiating exposure via software, it is still possible that there is still some slight movement on your desk.
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You will need a Trinocular head and a digital microscopy camera. Contact Leica at their website. A Google search will get you well on your way.

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