Microphotography

The article deals with microphotography - creating microphotos.

Focusing (Rebel XSi)

Setting live view:

• Rench (II).
  • Live view function settings.
    • Live View shoot.
• Press "Set" button to open the shutter.

Use the zoom button (on the camera) -- press twice to drop to 10x. Focus at 10x.

Shoot settings

• Exposure compensation - none.

White balance:

• Normal.

Post-processing

GIMP scripts:

• White-balance.
• Shadows & highlight.

White balance

• May be done with:
  • White balance plugin.
  • Curves function (in GIMP).

Curves function (in GIMP)

• Adjust magnitude, then blue, then green -- red should be last.
  • Low magnification images tend toward "too pink" with the white-balance script.

White balance plugin (script)

Procedure:

1. Select
   • Filters.
     • Colors.
       • White balance.
2. Use eye dropper to select what should be white on the image.
3. Set to "background color".

Edge effects/vignetting

Lens distortion effects at edge of image - known as: "barrel distortion" and "vignetting"

Notes:

• http://www.gimp.org/release-notes/gimp-2.4.html
• http://www.gimp.org/release-notes/gimp-2.4-videos.html

De-vignetting (GIMP)

1. Take picture as one wants.
2. Remove slide and shoot the background.

In GIMP:

1. Load background.
2. Load image as a layer.
3. Make sure the background image is the top layer.
4. Make background into an "overlay".
5. Invert background.
6. Save as jpg.

See also

• Microscope.

External links

• Martin Microscope company (martinmicroscope.com).