The 1.4 EX DG is placed between the lens and the camera, and it allows the photographer to use the 70-200mm f/2.8 lens as a 98-280m f/4 lens, and the 300mm f/2.8 lens as a 420mm f/4 lens; the high optical performance is maintained and the AF speed is not affected.
Main Specification
Lens construction: 5 elements in 3 groups
Focal length: 1.4x that of a master lens
Aperture coupling range: F2.8 - F32
Reproduction ratio: 1.4x that of a master lens
Dimensions: 68.5 X 19.5mm
Weight: 143g (5oz.)
Type Teleconverter
Magnification 1.4x
For use with Nikon fit Sigma AF lenses
Requires f4 or faster for AF
Please note that stock levels do fluctuate so please call or email to check today's stock before placing your order.
This Double DVD (180min) is a simplified easy to understand guide to the operation of the Meade ETX Telescopes. Unlike other instructional aids, this DVD is clearly laid out and goes into great detail for instance on the polar alignment setup for photography.
Great Price at only £16.99
Beginners Guide To Equatorial Mounted Telescopes. DVD Video
Learn how to use your equatorial mounted telescope in 45 minutes!
Great Price at only £14.99
PRICE MATCH
PRICE MATCH PROMISE
If you can find any product on our website cheaper elsewhere, we'll aim to beat that price.