Especificaciones

distante que su contraparte de luz visible, tal y como se ve a traves del visor de la camara. Debido a esto, es necesario hacer un ajuste para obtener un enfoque precise en fotograffa infrarroja. Se pueden usar las escalas proporcionadas para determinar el grado de ajuste por medio de las li'neas punteadas de compensacidn infrarroja incluidas.

De la misma forma en que se describe en la seccion "Escala de la profundi- dad de campo'', alinee la distancia del objeto previamente enfocado (usando la escala B) con la linea de la distancia focal y dei indicador central de la escala de abertura {en la escala A). La distancia desde la linea indicadora central hasta la lines punteada de compensacidn representa el grado de ajuste necesario. Enseguida gire el anillo de enfoque del objetivo de derecha a izquierda, hasta que la distancia previamente enfocada se modifique, tal y como esta indicado en las escalas.

Distancia focal: 25 ~ 50mm

Abertura maxima: f/4

Estructura del objetivo: 11 elementos en 10 grupos

Angulo lotografico: 80°40'^47°50

Escala de distancias: Graduada en metros y en pies desde 0,6m (2 pies) hasta infinito

Control zoom: Anillo de zoom independiente con rotacibn de 83°; marcas de referenda para establecer distancias focales de 25mm, 28mm, 35mm, 40mm y 50mm

Control de enfoque: Anillo de enfoque independiente con rotacion total de73°30'

Escala de abertura: f/4M/22, tanto en la escala normal como en la de lectura directa de ta abertura (ADR)

Tamano de accesorios: 72mm (P = 0,75mm)

Diaf ragma: Totalmente automatico

Medicidn de la exposicion: Se ha adoptado el me^todo de abertura total; con reborde de acoplamiento al exposi'metro para adaptarse a las camaras tipo Al y con zapata de acoplamiento al exposi'metro para camaras tipo sin AJ

Medida de accesorios: 72mm (P =

0,75mm)	Accesorios
Montura: A bayonets Nikon	Tapa frontal de rosea de 72mm
Dimensiones: 75mm4> * 112mm	Tapa trasera LF-1
longitud (total); 104mm de ex-	Parasol de insercion HK-7
tension desde de el borde	EstucheftexibleN°62
Peso:Aprox. 600g	EstucheduroCL-15S
	Filtros de 72mm
	Telecorwertidor TC-200

Zoom-Nikkor 25-50mm f/4 specifications

The Nikon Zoom-Nikkor 25-50mm f/4 is a versatile and compact zoom lens that has become a favorite among both professional photographers and enthusiasts. It was released in the 1970s as part of Nikon's F series lenses, designed primarily for 35mm film cameras but remaining popular in the digital age with compatible DSLR and mirrorless systems.

One of the standout features of the Nikon Zoom-Nikkor 25-50mm f/4 is its constant maximum aperture of f/4 throughout the zoom range. This capability ensures consistent exposure settings and depth of field control, making it an excellent choice for varied shooting conditions. The lens covers a wide focal length range, from a moderately wide 25mm to a standard 50mm, enabling photographers to capture a variety of scenes—from expansive landscapes to intimate portraits.

The lens incorporates several advanced optical technologies designed to enhance image quality. The construction includes multiple elements arranged in groups, effectively minimizing distortion and aberrations typically associated with zoom lenses. Nikon's proprietary Super Integrated Coating (SIC) further reduces flare and ghosting, resulting in impressive color accuracy and contrast.

Another significant characteristic of the Zoom-Nikkor 25-50mm f/4 is its compact and lightweight design. Weighing merely 600 grams, it offers portability without sacrificing durability. The lens barrel is made from high-quality materials, ensuring reliability in various shooting environments. The design also features a smooth zoom mechanism that allows for precise framing adjustments.

Focusing is made easy with the lens's close focusing capability, allowing for effective close-up work. The focus ring operates smoothly, allowing photographers to fine-tune their shots accurately. Additionally, the lens is compatible with Nikon's extensive range of accessories, including filters and hoods, enhancing its versatility.

In conclusion, the Nikon Zoom-Nikkor 25-50mm f/4 remains a trusted companion for photographers seeking a reliable zoom lens that combines excellent optical performance with practicality. With its constant aperture, superior coating technologies, and robust design, it is a perfect choice for anyone wanting to explore the art of photography, making it an enduring classic in the world of photography lenses.