For those of you who doesn't have a macro lens, it's very easy to make one yourself.
Materials:
1) 2 regular lense (no harm will be done to them - as long as you don't drop the lense). Best: One pr1me (short 50mm or less), one zoom. The longer lens DOES NOT get you a more microscopic picture. It does allow you to produce a same size picture further out - easier on your back.
2) A card-stock cardboard available at any office supply store. Has to be strong enough to hold on to the lenses but still easy to handle. Must be black on at least one side
3) A good quality black electrician's tape (home depot or any hardware store, shinny plastic on the non-stick side) - don't use anything else. Must be the kind that doesn't leave a mark behind when removed.
That's it - you can start taking macro pictures!
Procedure:
a) Mount the short lens the normal fashion. Remove any UV or Haze filters (not required but they will cut down on the amount of available lights.
b) Cut-up the cardboard. Width should be slightly more than pi x filter size. For 58mm (diameter of the lens), you need a width of 3.1416 x 58 mm or about 182.2 mm (7.2 inches). The length is the fun part. The longer you use, the bigger the magnifying factor (more microscopic), but will be harder to get a good picture (requires more light and faster shutter). In fact, depends on how strong the cardboard you use, the extender tube you're about to make can be wobbly.
c) Roll the cardboard into a cylinder and wrap the two lense to the 2 ends of the cylinder (black on the inside) with electrician's tape. Make sure no light creeps in, and be sure to secure the long lens so you don't end up dropping it if it does come off the cardboard. You've been warned.
附加檔案:
DSC_0156-New weaponDetail.jpg [ 87.49 KIB | 被瀏覽 7468 次 ]
Congratulations! You are now the proud owner of a macro lens. Enjoy taking pictures without the help of auto-focusing, no auto-metering, no way to even manually adjust the focus (other than moving the camera back and forth towards the object), no way to compose the size of the picture (no way to zoom) other than changing the length of the cylinder you made earlier.
Think of the pin-hole camera!
Is it really worth the trouble? Take a look at these pictures:
http://www.smashingmagazine.com/2008/09 ... -photos/''or these:
http://www.google.com/search?q=most+bea ... 40&bih=799Note that even if you buy extension tubes, your magnification factor is still limited - unless you keep buying more and more extension tubes to make longer ones. This method give you a looooooooooong tube to play with. Just don't drop that lens (that's why I brought a $11 lens from eBay for this purpose)
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