Translate this blog into your language

Showing posts with label EF 24-300mm f/3.5-5.6 lens. Show all posts
Showing posts with label EF 24-300mm f/3.5-5.6 lens. Show all posts

Monday, January 11, 2016

Sigma Patent - 120-600mm f/5-6.3 Super Zoom Lens


Sigma 200-500mm f/2.8 EX DG APO lens 

It appears Super Zoom is the new rage for zoom lens going into 2016. Egami, the Japanese photography blog has uncovered a Sigma patent for a 120-600mm f/5-6.3 lens.

Sigma and Tamron already has a 150-600mm f/5-6.3 and shorter super zoom lenses on the market and Nikon has their 200-500mm f/5.6 ED VR lens. Canon has recently patented the EF 200-600mm f/4.5-5.6L IS and EF 24-300mm f/3.5-5.6 lens.

It all started with the Canon EF 28-300mm f/3.5-5.6L IS Super Zoom lens back in 2004. This is my favorite professional grade 'L' super zoom lens for wildlife photography when it is not practical to change lens in the middle of a photo shoot. However, the lens is aging and can benefit from an upgrade. Since the introduction of the unrivaled EF 200-400mm f/4L IS USM Extender 1.4x lens back in 2013, there is room for a longer focal length Super Zoom lens in the EF lineup. You can see my equipment bag and works on MichaelDanielHo.com


Patent Publication No. 2015-203827
  •     Published 2015.11.16
  •     Filing date 2014.4.16

Example :
  •     Zoom ratio 4.66
  •     Focal length 125.15 250.18 583.80
  •     F number 4.86 5.84 6.50
  •     Total angle of view 2? 19.47 9.76 4.18
  •     The image height Y 21.63
  •     Overall length of the lens 314.20 371.31 424.96

Monday, January 4, 2016

Canon Patent - 24-300mm f/3.5-5.6 Super Zoom Lens


Canon EF 28-300mm f/3.5-5.6L IS Super zoom lens

The Japanese Photography blog, Egami has uncovered a new Canon patent for a full frame, 24-300mm f/3.5-5.6 superzoom lens. In December of 2015, another Canon patent for the EF 200-600mm f/4.5-5.6 IS zoom lens was discovered.

There are other Super zoom lens from Sigma and Tamron but they are quite professional grade. The current Canon EF 28-300mm f/3.5-5.6L IS is my favorite all-in-one zoom for wildlife photography when it is not feasible to change lens in the middle of a shoot. However, it was released in 2004 and has an older version of IS.

A new Canon Super zoom lens can certainly benefit from advancement in coatings, optics and Image Stabilization. I will be interested in acquiring both the 24-300mm and 200-600mm zoom lens if they come out in the 'L' model. There is a better than even chance Canon will announce another Super zoom some time in 2016.

Patent Publication No. 2015-215438 (Machine Translated)

  •     Published 2015.12.3
  •     Filing date 2014.5.9
  •     Focal length 24.70 101.33 292.01
  •     Fno 3.50 4.59 5.87
  •     ? (degrees) 41.22 12.05 4.24
  •     Image height 21.64 21.64 21.64
  •     Overall length of the lens 202.71 232.50 288.71
  •     BF 38.78 43.69 75.66