WebJul 17, 2009 · The PROMASTER 2x Autofocus Teleconverter is compact and lightweight and adds photographic versatility without the expense of an extra lens. This converter allows the focal length of your lens to be extended by a factor of 2 times. The 1.7x factor has a minimal reduction to your effective aperture of only 2 stops. WebApr 15, 2024 · What’s next for Nikon Z Mount lenses? The Nikon 26mm f2.8 and 85mm f1.2 in this road map have already been announced, with six lenses yet to be announced. One …
Pro Optics 500mm f6.3 Mirror lens - A hands-on review
Webat Canon USA & Affiliates in Chicago, Illinois, United States Job Description. Overview. We have an exciting opportunity for a Technical Specialist to join our Education, Field & Sales … WebAug 3, 2014 · Promaster Spectrum 7 isn't a single lens... it's a whole line of lenses, teleconverters, etc. and they made some of these with "Canon" mount... but also made … bubble guppies a load of litterbugs
Promaster Spectrum7 AF 1.7x Lens Reviews - Pentax
WebAug 18, 2024 · The PROMASTER 1.7x Autofocus Teleconverter is compact, lightweight and allows the focal length of your lens to be extended by a factor of 1.7. The 1.7x factor has a minimal reduction to your effective aperature of only 1.5 stops. The PROMASTER 1.7x Autofocus Teleconverter communicates with most lenses for full compatibility. WebThe 28-200mm can be locked down for travelling, and when unlocked, it requires only a small rotation to go from 28mm all the way to 200mm. When it’s in its fully zoomed position it holds the zoom firmly, freeing me to use both hands to steady the camera. WebFeb 23, 2004 · In retrospect the Promasters were OK for beginner lenses on my budget at the time, and I'm glad I got them, so I can be impressed by the USM focus system (quick, silent & accurate), and lack of flaring and CA in higher quality lenses. Also I can appreciate a lens that can be used wide open and be sharp, versus having to stop bubble guppies animals everywhere dvd menu