Nikon F/41F instruction manual Specifications

SPECIFICATIONS ---------------------

Focallength	120mm (at 1/11 X)
Maximum aperture	f/4
Lens construction	Prime lens: 9 elements in
	6 groups; 2X attachment lens:
Picture angle	2 elements in 1 group
	20°30'
Distance scale	Graduated in meters from 1.6m to
	0.35m for 1/11 X to 1X (white
	numerals) and 0.33m to 0.26m
	for 0.8X to 2X (orange numerals)
	when using 2X close-up attach-
	ment lens; sticker-type conver-
Aperture scale	sion scale for feet also provided
	f/4 - f/32
Diaphragm	Fully automatic; guide number
	system automatically sets
	appropriate aperture as subject
	distance is set on focusing ring
Reproduction ratio	Continuously variable from 1/11 X
	to 1X (prime lens only) and 0.8X
	to 2X (with 2X close-up attach-
	ment lens)
Data imprinting	Reproduction ratios (1/11 X- 2X)
	can be recorded in lower right-
	hand corner of the film; non-data
	shooting also possible by leaving
	DATA button in OFF position
Flash illumination	Via built-in Xenon ringlight
	flashtube; output approx.
	60W/sec.; flash output via silicon-

		controlled rectifier and series
		circuitry determined by ASA/ISO
		ring setting; flash duration
Ready-light		apfJrox. 1/500 sec. at ASA/ISO 25
		Provided ; red LED on top of lens
		barrel; reproduction ratio seen
		in the viewfinder also serves as
Focusing lamp		ready-light
		Provided; 12V lamp at front of
		lens glows for 16 sec. after finger
		is taken off LAMP button; auto-
		matically stops glowing when
		ringlight fires or power source is
Attachment size		turned off
		49mm (P=O. 75mm)
Attachment lens		49mm, 2X close-up attachment
Mount		lens provided
		Nikon bayonet mount
Power source		AC Power Unit LA-2 and DC
		Power Unit LD-2 (both are
		provided with a neckstrap)
AC Power Unit LA-2
Film	Recycling times		Number of flashes
speed
ASA/ISO		Approx.
25		6 sec .	Unlimited
ASA/ISO		Approx.

1004 sec.

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