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Double Reverse Ring?
Sep 22, 2012 04:08:55 #
Reverse-mounting prime, manual-iris Closed Circuit TV camera lenses will yield high magnification. I have mounted a 12-mm lens and a 16-mm lens. I prefer the 16-mm because it has deeper depth-of-field and not quite as high magnification at approximately 4:1 (4x life-size). The 12-mm lens yields approximately 4.7:1 (4.7x life-size).
A standard DSLR body cap is scribed to mark dead-center, then clamped in preparation for drilling center hole.
The Step Bit is slowly plunged through cap until 1-inch wide hole is bored through body cap. The black line marks the next size above 1-inch width.
Reverse-Mounted CCTV lenses
1-mm long Aphid nymphs. Hand-held Nikon D5000 at ISO 200 with reverse-mounted Kowa 12-mm CCTV lens, 1/200-sec at 2/3-closed aperture, illuminated with tilted, built-in camera flash. Cropped to 8:1 mag (8x life-size).
CCTV lens & camera body cap
Sep 22, 2012 23:06:06 #
Nikonian72 wrote:
Reverse-mounting prime, manual-iris Closed Circuit TV camera lenses will yield high magnification. I have mounted a 12-mm lens and a 16-mm lens. I prefer the 16-mm because it has deeper depth-of-field and not quite as high magnification at approximately 4:1 (4x life-size). The 12-mm lens yields approximately 4.7:1 (4.7x life-size).
Nikonian,
Great idea; two questions...
How much does a lens like that cost and who would I need to cut the hole (no drill-press at the old codgers' home).
Sep 23, 2012 01:18:30 #
john merry
Loc: tincan bay qeensland aus
all to complicated for me think i will stick with my 100mm 2.8 L macro lens
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