Sigma 1.4X APO Tele Converter EX DG - Accessory

Name: Sigma 1.4X APO Tele Converter EX DG - Accessory
Brand: Sigma
SKU: h2b3

7 Available

Teleconverters ›
Nikon F ›

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Model Details

Teleconverter made for F-mount lenses and cameras introduced by Sigma. It multiplies the focal length of the lens by 1.4x at the cost of 1 EV of light transmission. It requires a body and lens that control the aperture and focus information electronically. Metal/plastic body available in black.

Size: 72 x 28 mm
Weight: 160g

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Type

Teleconverter

Brand

Sigma

System

Nikon F

Usage

FilmDigital

Focus Type

MF & AF

Nikon F

Nikon introduced their first SLR, the Nikon F, in 1959. Alongside it they unveiled a series of lenses and a new lens mount that would carry them to professional success for the next decades. To this day, all Nikon DSLRs use the Nikon F mount.

In the beginning, Nikon lenses communicated aperture information to the body using a metal coupling fork, affectionately known as "bunny ears". Soon after, Nikon began using a similar system that automatically told the camera the maximum aperture of the lens. This Automatic Indexing (AI) system stuck around for decades in lenses and is still found on Nikon's high-end professional DSLRs even though new lenses communicate this information electronically.

With only minor compatibility issues (don't use a pre-AI lens on AI bodies or modern digital cameras), Nikon F lenses and bodies are pretty much interchangeable.