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Old Jan 8, 2009, 6:45 PM   #1
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I would like to use the A350 for photomicrography because of its live view and the fold out lcd panel. In order to use Maxxum cameras without a lens (on a microscope or telescope) or with manual (T-mount) lenses it was necessary to use an undocumented procedure to release the shutter which would lock up without a Maxxum AF type lens in place: on xi bodies, press the AE Lock and Function buttons while turning on the camera, and on si bodies the SPOT and CARD buttons. Does anyone know if such a procedure is necessary on alpha cameras (specifically the A300/350), and if so, what is it?
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Old Jan 8, 2009, 11:15 PM   #2
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From the A300/A350 Instruction Manual, page 161:

"Warning messages ... No lens attached. Shutter is locked. The lens is not attached properly, or the lens is not attached. When attaching the camera to an astronomical telescope or something similar, set the recording mode to M."
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Old Feb 13, 2009, 3:33 PM   #3
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Try greatscopes.com. Iborrowedthis from their site. Might work if you have proper lens on your camera.

Digital Camera Mount: $99



Digital cameras have brought convenience to photography - and our camera mount brings microscopy to photography.
You'll select the ring that fits your digital camera's filter threads, thread it to the eyepiece mount, then to your camera, and you are all set!


You'll receive:

  • [/*]
    [align=left]Unique three-thumbscrew eyepiece mount that grips your microscope's eyepiece. Fits any microscope.
    [/align]

  • [/*]
    [align=left]All three filter rings: 28mm, 37mm, 52mm. Fits most digital cameras. Use step-up or step-down rings (from a camera shop) if your size is not available[/align]




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Old Mar 19, 2009, 10:06 PM   #4
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A generic T-mount microscope adapter is all you need, with a Minolta Maxxum T mount. I did get the camera (an a350, primarily to use my old Maxxum 500mm AF mirror lens for bird photography) and finally got around to trying it on a microscope. Here are the results (C & C welcome):

1 Snail "teeth" (radula)
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Old Mar 19, 2009, 10:07 PM   #5
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2 Insect antenna
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Old Mar 19, 2009, 10:07 PM   #6
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3 ant
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Old Mar 19, 2009, 10:08 PM   #7
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4 fly
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Old Mar 19, 2009, 10:09 PM   #8
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5 tick
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Old Mar 20, 2009, 1:20 PM   #9
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6 A higher power image of #2
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Old Mar 29, 2009, 12:27 AM   #10
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7 An image of the setup (overprocessed - needs to be redone)
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