Canon Extender EF 2x III Super Telephoto Features & Technical Specs


DESIGNED TO EXTEND A LENSES FOCAL LENGTH BY A FACTOR OF 2X, THE REDESIGNED CANON EXTENDER EF 2X III DELIVERS OPTICAL PERFORMANCE ON PAR WITH THE FINEST CANON SUPER TELEPHOTO LENSES. IT FEATURES A BUILT-IN MICROCOMPUTER FOR SEAMLESS COMMUNICATION AMONG CAMERA BODY, LENS AND EXTENDER, FEATURES CAREFUL LENS PLACEMENT AND COATINGS TO MINIMIZE GHOSTING, FLARE AND CHROMATIC ABERRATION, AND EVEN HAS A NEW FLUORINE COATING THAT KEEPS SOILING, SMEARS, FINGERPRINTS TO A MINIMUM. EXTENDER EF 2X III MEETS NECESSARY STANDARDS IN TERMS OF RUGGED, DUSTPROOF AND WATER-RESISTANT CONSTRUCTION, AND SHOULD BE IN EVERY PROFESSIONAL'S CAMERA BAG.

Estimated Retail Price
$499.99
Magnification
2.0x
Lens Construction 
9 elements in 5 groups
Max. Diameter x Length, Weight
2.8 x 2.1 in, 11.5 oz. / 72.0 x 52.7mm, 325g



Comments

Post a Comment

Popular posts from this blog

Canon EF 800mm f/5.6L IS USM Super Telephoto Prime Lens Features & Technical Specs

Image
THIS IS THE LONGEST TELEPHOTO LENS AMONG CANON'S LINEUP, AND A TERRIFIC CHOICE FOR ANY LONG-DISTANCE APPLICATION-OUTDOOR SPORTS, WILDLIFE, NEWS PHOTOJOURNALISM, AND SO ON. IT'S ACTUALLY LIGHTER THAN CANON'S EF 600MM F/4L IS LENS, WEIGHING JUST UNDER 10 LBS. IT USES A REFINED OPTICAL DESIGN, WITH TWO FLUORITE LENS ELEMENTS, ONE UD ELEMENT, AND ONE SUPER-UD-GLASS ELEMENT, FOR OUTSTANDING CORRECTION OF COLOR FRINGING AND SUPERB CONTRAST AND SHARPNESS. THIS SUPER-TELEPHOTO LENS USES MAGNESIUM-ALLOY BARREL CONSTRUCTION TO ENHANCE ITS LIGHT WEIGHT, AND HAS WEATHER-RESISTANT GASKETS THROUGHOUT FOR USE IN HARSH CONDITIONS. IT'S COMPATIBLE WITH BOTH THE EF 1.4X II AND 2X II TELE EXTENDERS FOR EVEN MORE REACH: EOS CAMERAS WITH 45 AF POINTS WILL CONTINUE TO PROVIDE AUTOFOCUS AT THE CENTER AF POINT WHEN THE LENS IS USED WITH THE 1.4X EXTENDER. FINALLY, IT'S IMAGE STABILIZED, PROVIDING UP TO 4 STOPS OF CORRECTION FOR CAMERA SHAKE. THIS MAKES IT EVEN MORE PRACTICAL IN MANY
Read more

Creating Orthomosaic Using Drone Images

Image
In this article we will create an orthomosaic using drone images which can be used as an aerial view map of an area you intend to capture. First of all, we need a drone that uses GNSS (Global Navigation Satellite System) for the aerial survey.  You can use most DJI drones depending on the mapping apps that you're going to use. Here are the mobile apps which can be used for mapping:      - DJI GS Pro     - Pix4D     - Map Pilot Pro     - Drone Deploy     - UGCS     - DJI Pilot 2 These are the common settings which we can find in mapping apps: GSD : also known as Ground Sample Distance is usually measured in cm/pixel. Lower numbered GSD means better resolution and quality of images. Numbers less than 3cm/px are a good starting point. Also, flying height dictates the gsd resolution, higher altitude = high gsd.  Flight Height or Altitude: This will determine the gsd of your project. 60-120m (200-400ft) should be good altitude depending on how large the area you are going to survey. Fo
Read more