Reproduced for Historical & Reference purposes by Paul M. Provencher -
http://whitemetal.com
37
Complete System of Asahi Pentax
Accessories for Close-Ups,
Macrophotography, Photomicrography,
and other Miscellaneous Accessories
• EXTENSION TUBE SET
A set of 3 rings, #1, #2 and #3 of 9.5mm,
19mm and 28.5mm respectively. They may
be used singly or in combination desired.
When all three are used simultaneously with
the 55mm Super-Takumar lens, the subject
is enlarged on film to a magnification of 1.17
life size.
• AUTO-EXTENSION TUBE SET
New extension tube set of 3 rings, 95mm
(#1), 19mm (#2) and 28.5mm (#3), with
coupled automatic diaphragm release pins.
Mounted singly or in combination between an
Asahi Pentax and a 55mm automatic
diaphragm lens, this set of Auto-Extension
Tubes permits focusing at a magnification
from 1.17x to 0.17 and operation of the
automatic diaphragm.
• HELICOID EXTENSION TUBE
Like the lens helicoid, the new Asahi Pentax
Helicoid Extension Tube extends from
16.8mm to 30.6mm. It serves the purposes
of the Asahi Pentax Extension Tubes #2 and
#3. Mounted between an Asahi Pentax and a
55mm lens, it permits photography at a
magnification from 0.30x to 0.7x. It is
extremely versatile variable extension ring.
