January 9, 2014
Posted in News

CES 2014: Canon Shows Inner Working Of Its Lenses in Demos (video)

Share

At CES 2014 Canon showed the inner working of their lenses. The video was made by Popular Photography‘s Stan Horaczek and it shows the demos that Canon is running at their booth.

You can see how the stepping motor (STM), the electromagnetic technology used to control the aperture, and the image stabilization of Canon lenses work. Quiet interesting.

[via PetaPIxel]

January 9, 2014
Tags:
Posted in Reviews

Canon EF-S 55-250mm f/4-5.6 IS STM Review (ephotozine)

Focal Length & Maximum Aperture 55-250mm 1:4-5.6
Lens Construction 15 elements in 12 groups
Diagonal Angle of View 27°50′ – 6°15′
Focus Adjustment Rear focus system
Closest Focusing Distance 2.79 ft. / 0.85m
Filter Size 58mm diameter
Dimensions (WxHxD) 2.8 x 4.4 x 2.8″ (71 x 112 x 71mm)
Weight 13.23 oz (375g)

ephotozine reviewed the Canon EF-S 55-250mm f/4-5.6 IS STM. The lens is made of high quality plastics (the lens mount is also made of plastic, but do not let this fool you). Some excerpts from the review:

  • Autofocus is silent, swift and precise (but no manual override)
  • [...] sharp hand-held images are possible around half the time at an impressive 1/25sec (four stops slower than the usual rule of thumb)
  • At maximum aperture and 55mm sharpness is already outstanding in the centre of the frame
  • [...] zoomed to 135mm, sharpness at maximum aperture remains very high in the centre of the frame and good sharpness towards the edges
  • Peak sharpness across the frame at f/8
  • Distortion is well controlled

From the conclusion:

As this lens is intended as a budget option, it is quite surprising to see just how well it performs. Sharpness is outstanding in the centre of the frame for much of the zoom range, which is how you might expect much more expensive lenses to perform.

However, as this predecessor of this lens is still available, and as the STM focusing motor isn’t quite a revelation in terms of performance or usability, one may do well to look at snapping up the older version for now, while the price gap is so large.

The lens got a rating of 5 stars with the motivation: “The Canon EF-S 55-250mm IS STM lens delivers outstanding sharpness in the centre delivering better than expected performance at this price“. If you do not need the stepping motor (STM, good for videography) you may prefer the predecessor, the Canon EF-S 55-250mm f/4-5.6 IS II which comes at a lower price: $267 vs the $335 of the newer version.

The review comes with charts and sample pics (original size), have a look if you are interested in this lens.

[via ephotozine]

January 8, 2014
Tags:
Posted in News

Sigma 18-200mm f/3.5-6.3 OS HSM Available For Pre-Order (B&H)

Sigma 18-200mm

The just announced Sigma 18-200mm f/3.5-6.3 OS HSM is already available for pre-order at B&H Photo for $399. More after the break.

Read the rest of this entry →

January 8, 2014
Tags: , , ,
Posted in Deals

Canon Deals: 5D Mark III ($2919), 24-105mm f/4L IS ($774, ref.), EOS 7D ($939, ref.), PowerShot G16 ($454)

 

Refurbished EOS 7DRefurbished EOS 7D

5 interesting deals, first 4 at B&H Photo, last one on eBay:

Canon EF 24-105mm

January 8, 2014
Posted in News

CES 2014: Lexar Announces World’s Fastest Memory Card

CES 2014

To learn more about this new technology have a look at PetaPixel.

Lexar press release:

New Lexar Professional 3333x CFast 2.0 Card Provides Read Transfer Speeds up to 500MB/s* in Capacities up to 256GB

Fremont, CA, January 6, 2014 – Lexar, a leading global brand of flash memory products, today announced its technological leadership in the digital imaging market with the immediate sample availability of Lexar Professional 3333x CFast 2.0 cards and the Lexar Professional Workflow CFast 2.0 USB 3.0 reader for the Lexar Professional Workflow Reader Solution. The CFast 2.0 specification is the next generation of high performance memory cards designed for professional applications in still imaging and video capture.

Lexar Professional 3333x CFast 2.0 Card
With capacities available for sampling in 256GB, 128GB, 64GB, and 32GB, the Lexar Professional 3333x CFast 2.0 cards demonstrate new speed thresholds to capture high-quality images and 1080p full-HD, 3D, and 4K video. Designed to maximize the capabilities of the next-generation of high-definition camcorders and high-resolution digital SLR cameras, the new cards provide a read transfer speed up to 3333x (500MB per second)*, which is three times faster than any CompactFlash card.** Additionally, the new Lexar Professional 3333x CFast 2.0 cards will support the Video Performance Guarantee (VPG-65) specification for professional-quality video capture, and includes the latest version of Image Rescue software.

Read the rest of this entry →

January 8, 2014
Posted in News

Site Maintenance

Dear all,

I am changing some things on Canon Watch, mainly the look and feel of the site.

In the next days there may some glitches or changes in the theme. Normal use of the site should not be affected.

Thanks for your understanding!

×