-ACCESSORIES-continued,------------

Duplication work and photomicrography

The F3AF combined with the proper accessory enables you to perform duplication work or photomicrography. In these special- ized areas of photography, however, focusing should be per - formed manually using the matte portion of the focusing screen as autofocus/focus-aidoperation is, in most cases, impossible. In addition, exposure compensation is required because these areas of photography represent unusual contrast situations.

Shown in the table is the relationship between specific photo types and proper exposure. Since this is meant to be a guide, in practice, you should make further compensation by experimen- tation until you achieve the proper results .

1)The exposure compensation values listed below are reference data obtained when general-purpose film was used. With color reversal film or microfilm for duplication work, it is advisable to take additional shots with ± one -stop exposure compensation as these films have very small exposure latitude.

2)To avoid vibration , you can make the exposure by turning the illumination on and off.

3)It is advisable to use a cable release to eliminate camera vibration .

 

Subject

Method of exposure

 

measurement

 

 

 

Photographs and

 

 

pictures with continu-

 

 

ous gradation

 

Copy

 

Full·aperture

work

Documents and

or stop-down

 

drawings of high

 

 

contrast

 

 

Slide with continuous

 

 

gradation

 

Slide

 

Stop·down

duplication

Slide of documents and

 

 

drawings photographed

 

Photomicrography

Prepared specimen

Stop-down

Exposure

compensation

Compensation not necessary

Approx . +t to +2 stops for black letters on white background: approx. - 112 to - 1 stop for white letters on black background.

Approx. + 1 to + 2 stops

Approx . +1 ·112 to +2,112 stops for black letters on white back· ground

oto approx. -112 stop for white letters on black background

Approx. + 1 stop

Required accessories

Micro·Nikkor 55mm 112.8: Cable release

Micro·Nikkor 55mm 112.8: Nikon Slide Copying

Adapter PS·6: Nikon Bellows

Focusing Attachment PB·6 :

Cable release

Microflex PFX

Remarks

For high'contrastsubjects, use of an t8 %

reflectance gray card in determining exposure is recommended . With the card, no exposure

compensation is required regardless of whether the background is black or white.

When using Nikon Slide Copying Adapter PS·6, set the flood lamp 30cm away from its opal plate.

Generally, results come out better with more exposure in photomicrography. The compen·

sation value on the left is only a guide : determine

the compensation value by test shooting.

+: more exposure -:less exposure

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Nikon F3AF instruction manual Duplication work and photomicrography, Slide with continuous

F3AF specifications

The Nikon F3AF, introduced in 1983, is a landmark camera in the history of photography, notable for its pioneering autofocus capabilities. As one of Nikon's first professional autofocus cameras, the F3AF combines the robust features of the F3 series with advanced technology to offer photographers a powerful tool for capturing high-quality images.

One of the standout features of the F3AF is its autofocus system, which employs a sophisticated phase detection mechanism. This represents a significant leap forward from the manual focus cameras that dominated previous generations. The system can quickly and accurately lock onto subjects, making it easier for photographers to capture sharp images, particularly in dynamic or fast-paced situations.

The F3AF retains the iconic design and build quality of the F3, characterized by its rugged, weather-sealed construction that ensures durability in various shooting environments. The camera body features a comfortable grip and a solid metal chassis, appealing to professionals who require reliability and performance in the field.

Another key characteristic is its compatibility with a wide range of Nikkor lenses, including the autofocus Nikons. This flexibility allows photographers to choose the appropriate lens for their specific needs, whether they are shooting landscapes, portraits, or sports. The camera features a unique "Auto Focus" mode which works in tandem with specialized AF lenses to streamline the focusing process.

In terms of exposure modes, the F3AF offers automatic exposure through its TTL (Through The Lens) metering system. This capability allows for accurate exposure readings, helping photographers achieve optimal results in various lighting conditions. Additionally, the camera features multiple shooting modes, including manual, aperture priority, and shutter priority, accommodating the preferences of both novice and seasoned photographers.

Furthermore, the F3AF supports an array of accessories, including motor drives and special viewfinders, allowing photographers to enhance their shooting experience. The camera's electronic viewfinder provides a bright and clear display, giving users a precise view of their composition.

Despite being released decades ago, the Nikon F3AF remains a respected choice among film enthusiasts and collectors, representing a significant achievement in photographic technology. Its blend of innovative autofocus functionality, robust design, and versatile features make it an enduring symbol of Nikon's commitment to excellence in the world of photography.