Canon EF 2.0X III Telephoto Extender for Canon Super Telephoto Lenses

 Canon EF 2.0X III Telephoto Extender for Canon Super Telephoto Lenses

Canon EF 2.0X III Telephoto Extender for Canon Super Telephoto Lenses



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Thursday, April 2, 2015

Canon Ef Canon EF 11-24mm f4L USM Lens

Canon Ef Canon EF 11-24mm f4L USM Lens

Canon Ef Canon EF 11-24mm f4L USM Lens


Canon Ef Canon EF 11-24mm f4L USM Lens

  • L-series ultra-wide zoom lens with an impressive 11mm starting focal length
  • New optical design and the use of one Super UD element and one UD lens element
  • Subwavelength Coating (SWC) and Air Sphere Coating (ASC)
  • Inner focusing, ring USM, a high-speed CPU and optimized AF algorithms
  • Full-time manual focus allows manual focus adjustment while in AF Mode
 
This lens is something remarkable, with just as remarkable of a price tag. If you're on a Full Frame canon camera and really do want ULTRA wide, then this is the cream of the crop. If you have a cropped sensor camera, this lens won't make sense for you, look at the tokina 11-16mm, unless you really do plan on migrating to full frame in the future.

Before i jump into the breakdown, consider if you truly need this wide. 11mm is around 125 degrees. That's comparable to a Gopro in its medium field of view setting. It's WIDE. A great tool for comparing focal lengths and sensor sizes is Abel's FOV calculator, just google that and it will come up. On with the thoughts:

-Built like a beast, solid as can be
-Focus and zoom rings are smooth with no slop
-Distortions are surprisingly well controlled, even at 11mm lines stay pretty strait, but expected UWA elongations will occur
-Chromatic Aberrations also appear well controlled
-Vignetting (darker near the corners) is definitely present, but easily fixed in editing.
-Sharpness is excellent, even wide open, even the corners perform well overall
-F/4 won't be the speediest, but consider that the newer FF cameras easily compensate for this in clean high iso.
-No front filter threads, BUT! a clever slot in the rear of the lens to slide a little filter gel in the back.
-Autofocus feels snappy and accurate.
-Close focus distance of just 11inches.
 
Canon Ef Canon EF 11-24mm f4L USM Lens

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