APO EL Nikkor 210mm F5.6
APO EL Nikkor 210mm F5.6

APO EL Nikkor 210mm F5.6

Abusolute Delicious Lens
APO EL Nikkor 210mm F5.6
Heavy Metal Glasses
Dynamic and Elegance
Excellent Micro contrast Lens

APO EL Nikkor 210mm F5.6

How to use the APO EL Nikkor 210mm F5.6 lens

My APO EL Nikkor 210mm F5.6 lens came to me in the summer of 2003. However, the lens had a special 82mm screw mount so I couldn't attach it to my Nikon camera. It was an "ornamental lens" for a while. Three years have passed since I got the lens. In 2006, the situation was a big step forward. I custom made the Nikon mount adapter to use the APO EL Nikkor 210mm F5.6 lens.

Nikon 82mm Adapter
d=82mm p=1.0mm, Nikon F Mount, Made by Extra Super Duralumin
MADE IN JAPAN

Custom Made Nikon Mount Adapter for APO EL Nikkor 210mm F5.6
82mm⌀ P=1 mm Screw Mount Adapter, Made in 2006

Nikon F Mount

I was able to attach the APO EL Nikkor 210mm F5.6 lens to my Nikon PB-4 bellows using an 82mm⌀ custom adapter. If the lens can be made into a Nikon F mount, it can be mounted on the Nikon Z series high-performance mirrorless camera via Nikon FTZ mount adapter.

Nikon PB-4 Bellows and APO EL 210mm F5.6

Nikon PB-4 Bellows Focusing Attachment

APO EL Nikkor 210mm F5.6 Images

Although it was an image taken a long time ago, I would like you to see the image of APO EL Nikkor 210mm F5.6 lens. I took the following pictures with the Nikon D70 in the fall of 2006. Those were the fresh and splendid images.

APO EL Nikkor 210mm F5.6 and Nikon D70, October 2006

Photo taken with Nikon D70, October 2006

The name of this flower is Autumn crocus. The light purple color is beautiful. I was able to shoot the beauty of flowers with APO EL Nikkor 210mm F5.6 lens.

Photo taken with Nikon D70, October 2006

Photo taken with Nikon D70, October 2006

You can see the excellent micro contrast ability of APO EL Nikkor 210mm F5.6 lens.

Photo taken with Nikon D70, October 2006

APO EL Nikkor 210mm F5.6 and Nikon D70, October 2006

APO EL Nikkor 210mm F5.6

APO EL Nikkor Technology

The unexcelled qality of Nikon-built cameras and lenses has greatly contributed to the widespread use of 35mm format photography. Quite naturally, Nikon has responded to the needs og the film processor as well. In ordnary photoengraving lenses, 1 : 1 is the standard magnification. But when used to produce large images, such as in the step and repeat method, a truly sharp image was difficult to ogtain.

APO EL Nikkor 210mm F5.6

To reproduce images as much as ten times the size of the original requires lenses designed for high magnification work with the aberrations fully corrected over the entire range. Apo-EL-Nikkor Lenses have been designed with standard magnifications of 2X (170mm), 5X (210mm and 480mm) and 10X (105mm and 300mm) to provide a wider range of application. Working in such a powerful magnification range opens the possibility for a host of problems due to insufficiencies in the reproducing lens.

Apo-EL-Nikkor Lenses surpass this challenge with highly ellective aberration correction and extremely sharp resolving power. These lenses are designed exclusively to provide superior performance when making critical photoenlargements or exacting color separations from small original film formats. Optimum performance is available not only at the standard magnifications but is maintained throughout the entire range. Apo-EL-Nikkor Lenses are available in five focal lengths for various sized originals.

Full spectrum resolution

In order to make color enlargements from a color original, the original must be color separated into three elements - red, green and blue. Up till now, apochromatic lenses like Apo-Nikkor lenses with chromatic aberration corrected for three colors have been used for processing. However, in the combined enlargement/color separation process with small originals, even a minute detect in the lens in magnitied enormously, since these lenses are originally designed for ue at around 1 : 1 magnification.

Apo-EL-Nikkor lenses are designed for color separation work involving high magnification and, through a combination of special Nikon-produced optical glasses and an ingenious optical design, chromatic aberration is corrected not only for the three primar colors, but for the entire visible range of the spectrum. Moreover, Apo-EL-Nikkor lenses are corrected for chromatic aberration in the near ultaviolet and near infrared ranges since the spectrum sensitivity of film emusions is not always identical to that of the humaneye. These lenses provide an extra margin of fidelity resulting in more accurately reproduced color and richer tone.

The outstanding resolution, higher than that of any existing original film, is due to the fact that nearly perfect elimination of all other aberrations is as well made possible by limiting the picture angle of the lenses. Consequently, there is no significant image displacement or difference in image size, regardless of magnification.

Full aperture brightness

The optimum performance of Apo-EL-Nikkor lenss is designed to be obtained at their full aperture of f/5.6. The maximum aperture of f/5.6 provides plenty of light for processing work despite the usual insufficiency of light inherent in making enlargements, thus saving exposure time. Furthermore, light transmission at the circumference of the lens is as good as that at the center, and off-axis light fall-off is minimized.

Nikon Integrated Coating (NIC)

As further insurance for accurate reproduction, a multi-layer coating is applied to glass-to-air surfaces whereever needed. The occurrence of internal reflection is virtually eliminated and thus images remain sharp, clear, and contrasty over the entire picture area.

This additional feature of Apo-EL-Nikkor lenses offers the extra measure of performance necessary in performing demanding photo enlargements and color separation work.

  LENS and APERTURE   FILM SIZE
  APO EL 105mm    F5.6   24 x 36 mm
  APO EL 105mm    F8   56 x 56 mm
  APO EL 210mm    F5.6   56 x 56 mm,  24 x 36 mm
  APO EL 210mm    F8   90 x 120mm  (4 x 5 inch)

Mounting the lens on a process camera

Enlarger-type process camera :  Attach the lens in the usual way with its rear mount facing the camera. The Apo-EL-Nikkor 210mm f/5.6, 300mm f/5.6 and 480mm f.5.6 lenses are supplied with a flange to facillitate attachment to the camera using nuts and bolts.

Darkroom process camera :  All lenses can be attached with the front mount facing the camera. Remove the ornamental front ring ( for the 170mm lens, this is not necessary ) and screw the lens into the process camera. A flange can be atached to the front mount of the Apo-EL-Nikkor 210mm f/5.6, 300mm f/5.6 and 480mm f.5.6 lenses. The Apo-EL-Nikkor 170mm f/5.6 requires an intermediate ring of 52mm attachment size for mounting.

Referenced the following materials;
Nikon Apo-EL-Nikkor Lenses
for color separating/screening/enlarging
Nippon Kogaku K. K.

APO EL Nikkor 210mm F5.6

Specifications

The old type lens and the new type lens exist in APO EL Nikkor 210mm F5.6 lens. The APO EL Nikkor 210mm F5.6 lens introduced in this article is the old type lens.

(1) Old type Lens

APO EL Nikkor 210mm F5.6

Focal length :  210 mm
Maximum aperture ratio :  1:5.6
Minimun f/stop :  f/45
Aperture scale :  1/3 step
Lens construction :  8 elements in 4 groups
Standard magnification :  5 X
Usable magnification range :  3 X - 10 X
Picture angle :  38° 20'
Corrected chromatic aberration range :  380 - 700 nm
Vignetting :  0% (at f/8)
Distortion :  +0.07%
Size of originals :  156 mm⌀
Image distance at standard magnification :  1501.6 mm
Filter size :  d=77 mm p=0.75 mm
Mount :  82 mm P=1 mm screw mount
Weight :  1220 g
Actual weight :  1264 g
Diameter :  98 mm
Length :  114 mm
Release date :  Jun 1971
Price :  330,000 Japanese YEN (1974)
Price :  330,000 Japanese YEN (1977)

(2) New type Lens

APO EL Nikkor 210mm F5.6N

Focal length :  210.4 mm
Maximum aperture ratio :  1:5.6
Minimun f/stop :  f/32
Aperture scale :  1/3 step
Lens construction :  8 elements in 4 groups
Standard magnification :  5 X
Picture angle :  45°
Corrected chromatic aberration range :  380 - 750 nm
Vignetting :  0% (at f/8)
Distortion :  -0.02%
Size of original :  153 mm⌀ (at f/5.6)
Size of original :  210 mm⌀ (at f/8)
Image distance at standard magnification :  1512.3 mm
Filter size :  d=67 mm p=0.75 mm
Mount :  72 mm p=1 mm screw mount
Weight :  830 g
Release date :  1980
Price :  330,000 Japanese YEN (1982)
Price :  330,000 Japanese YEN (1987)
Price :  $ 6,848.50 (July 2003, B & H New York, List Price)

APO EL Nikkor 210mm F5.6N Lens Construction

Nikon Z Album

I mounted the APO EL Nikkor 210mm F5.6 lens on my Nikon Z 6 and took the following pictures. The APO EL Nikkor 210mm F5.6 lens lens generates very rich images at long distances.

APO EL Nikkor 210mm F5.6 and Nikon Z 6

The following adapters were connected to the APO EL Nikkor 210mm F5.6 lens to get infinity.

Nikon FTZ Mount Adapter
Nikon Bellow PB-4
Nikon M2 Ring
APO EL Nikkor 210mm F5.6

Nikon Z 6 + FTZ + Bellow PB-4 + M2 Ring + APO EL Nikkor 210mm F5.6

APO EL 210mm F5.6, ASA 200 F8 1/2500 sec. -0.7

These images were taken at the usual shooting point to verify infinity. The location is the Tamagawa Bridge on the Keio Line, which connects Tokyo with Kanagawa Prefecture. The APO EL 210mm F5.6 lens produce very excellent images at long distances.

APO EL 210mm F5.6, ASA 200 F8 1/2000 sec. -0.7

APO EL 210mm F5.6, ASA 200 F8 1/1600 sec. -0.7

APO EL 210mm F5.6, ASA 200 F8 1/1600 sec. -0.7

APO EL 210mm F5.6, ASA 200 F8 1/2500 sec. -0.7

APO EL Nikkor 210mm F5.6 Style

Great Micro contrast Lens

The APO EL 210mm F5.6 lens have an amazing kind of rendition, clean and with great micro contrast. The APO EL Nikkor lens with great micro contrast has much richer colours and tone transitions compared to a general purpose lens.

APO EL 210mm F5.6, ASA 200 F8 1/800 sec. -0.3

APO EL 210mm F5.6, ASA 400 F5.6 1/500 sec. +0.7

APO EL 210mm F5.6, ASA 800 F8 1/1000 sec. -0.7

APO EL Nikkor 210mm F5.6 Style

APO EL 210mm F5.6, ASA 800 F8 1/250 sec. -0.3

APO EL 210mm F5.6, ASA 800 F8 1/2000 sec. +0.3

Professional Lens Shade

Excellent Apochromat Lens

APO EL Nikkor 210mm F5.6 lens is designed for color separation work involving high magnification and, through a combination of special Nikon-produced optical glasses and an ingenious optical design, chromatic aberration is corrected not only for the three primar colors, but for the entire visible range of the spectrum.

Dynamic and Elegance
APO EL Nikkor 210mm F5.6

Moreover, APO EL Nikkor 210mm F5.6 lens is corrected for chromatic aberration in the near ultaviolet and near infrared ranges since the spectrum sensitivity of film emusions is not always identical to that of the humaneye. These lenses provide an extra margin of fidelity resulting in more accurately reproduced color and richer tone.

Excellent Apochromat Lens
APO EL Nikkor 210mm F5.6

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Copyright Michio Akiyama, Tokyo Japan 2020