Modern Classic SLRs Series :
Nikon F - Nikon FTn Meter Finder/Prisms

 

The FTN Finder is the last metering finder that officially offered to the Nikon F users before the Nikon F2 started to market and it sold along with the Nikon F2 until 1974, it remained as one of the most popular prism for the Nikon F.

illustration.jpg (16k)
The unique feature like the metered Photomic FTN and other similar meter capable finders is its through-the-lens, center-weighted exposure metering which provides accurate exposure control almost under any picture-taking conditions.

This meter is designed to measure the entire picture field but favors the central 12mm focusing spot, concentrating more than half of its total light sensitivity on this 1/8 of the total picture field area.

Set Aperture.jpg (9k)
The exposure readings are taken at full aperture. Since the exposure metering is performed at full opening, the maximum aperture of a lens in use has to be set into the meter. After mounting the lens, twist the aperture ring all the way to the minimum aperture, then to the opposite direction as far as it will go.

The metering range is from EV2 through EV17 (at ASA 100). ASA sensitivity setting extends from 6 to 6400. The meter is powered by two 1.3V mercury batteries housed in the finder. To check the batteries, depress the built-in battery checker on the finder. If the needle in the window on top of the finder swings to the center circle or beyond, the batteries are in working order. The meter needle and the shutter speed settings are visible in the viewfinder above the picture field.

Nikon Photomic FTN Metering Prism
Operation Manual (HTML | PDF) | Main Reference Map for FTN finder (HTML | PDF)


Nikon F Photomic Ftn Finder.jpg (21k)


HTML Version of the manual


Top View | Front View
Back View
| Base View


Download a copy of the Manual for FTN Finder (167k)

Instruction of How to use the FTN finder:
1)
Checking Battery Condition
2)
How to attach the Finder
Shutter Speed Coupling
Lens Aperture Coupling
Setting the film speed
Turn on the Meter

3)
Exposure measurement With the Finder
Bellows Focusing Attachment, Extension Rings and Focusing Unit
Preset Lenses
Auto Lenses Without Coupling Prong
Reflex-Nikkor Lenses

4) Exposure Correction
Special Lens-Focusimg Screen Combinations
Repro-Copyimg
Slide Copying

(
PDF for screen/Finder Correction) (488k) Only available in PDF format.

Specifications for Nikon Photomic FTN
Type: 35mm single-lens reflex.
Shutter: Dimpled titanium-foil focal plane. Shutter speeds from 1 to 1/1000 sec. plus B and T. Built-in self-timer 3 to 10 sec.
Synchronization: FP and X synchs adjustable with synch selector according to the shutter speed to be used. M- and MF-class bulbs also usable. X synch at 1/60 sec. or slower. PC-plug socket provided. Hot-shoe contact for Nikon cordless flash unit.
Viewing/focusing: Eye-level pentaprism finder with built-in exposure meter covers 100% of the picture field. Interchangeable with four other finders. Shutter speed indication visible in lower finder viewfield. Type A Focusing Screen with matte/Fresnel field and central split-image rangefinder. Interchangeable with 17 other screens. Depth-of-field preview button provided.
Exposure metering: Through-the-lens center-weighted measurement at full opening.
CdS exposure meter powered by two 1.3V mercury batteries. Meter needle visible in and atop the finder.
Range of metering: EV2 - EV17 at ASA 100 (e.g. f/1.4, 1/2 sec.- f/11, 1/1000 sec.).
ASA sensitivity setting: 6 - 6400.
Maximum aperture setting: f/1.2 - f/5.6.
Meter diaphragm coupling:f/1.2 - f/32. Couples with both diaphragm and shutter speed dial.
Other features: 135° film-winding lever (throw-angle 15°; multi-stroke
winding also possible). Removable back allows adaptation of motor drives. Mirror lock-up. Various accessories to comply with any photographic situation. Automatic "0" resetting frame counter. Crank-type film rewinding.
Lenses: Standard: 50mm f/2, 50mm f/1.4 and 55mm f/1.2 Nikkor Auto lenses. Nikon F bayonet mount. More than 40 Nikkor interchangeable lenses available.
Dimensions (body): 147 x 102 x 67mm (5-25/32 x 4-1/32 x 2-5/8 in)
Weight (body): 86Og (1.9 Ib)
Remarks: Eye-level finder version instead of the Photomic FTN finder offered as companion model (called "Nikon F"). Available in satin chrome or black finish.

| Next | Operation of the FTn Photomic Finder
| Back | to Index Page - Finders/prisms

Main Reference map in HTML & PDF:
Body with FTN Finder | FTN finder | camera body |
External links for F & F2

| Back | to Nikon-F - Main Index Page
Michael C Liu's Nikons Classic Site

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The Eyes of Nikon:-
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Perspective Control (PC) - 28mm 35mm PC-Micro 85mm
Dedicated Lenses for Nikon F3AF: AF 80mm f/2.8 | AF 200mm f/3.5 EDIF
Depth of Field Control (DC): 105mm 135mm
Medical Nikkor: 120mm 200mm
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Others: Noct Nikkor | OP-Nikkor | UV Nikkor 55mm 105mm | Focusing Units | Bellows-Nikkor 105mm 135mm
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Recommended links to understand more technical details related to the Nikkor F-mount and production Serial Number:
http://rick_oleson.tripod.com/index-153.html by: my friend, Rick Oleson
http://www.zi.ku.dk/personal/lhhansen/photo/fmount.htm by: Hansen, Lars Holst
http://www.mir.com.my/rb/photography/hardwares/nikonfmount/lens2.htm
http://www.photosynthesis.co.nz/nikon/serialno.html

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Copyright © 1998. Michael C. Liu ®

Site rearranged by: leofoo ®. Credit: Hiura Shinsaku® from Nikomat Club of Japan for feeding some useful inputs on the introductory page. The great 3D logo by Kiasu; Ted Wengelaar®, Holland for his continuous flow of input of early Nikon bodies. Stephen Gandy's Cameraquest; Marc Vorgers from Holland for his additinal images on Nikon F Apollo; Hayao Tanabe corrected my Red Dot and Early F assertions. Gray Levett, Grays of Westminster publishes an excellent monthly historical look at Nikon products, from where I learned about the high-speed F's. Made with a PowerMac, broadcast with a Redhat Linux powered server.

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