Archive for: lens

Patent: Tamron 150-600 f/5-6.3

Patent: Tamron 150-600 f/5-6.3

A new Supertelephoto Zoom?
This is definitely a lens that Tamron would make. If you need length and you’re on a budget, this could be a one of a kind option if and when it comes to market.

Patent Publication No. 2012-208434

  • Release Date 2012.10.25
  • Filing date 2011.3.30

Example 1

  • Focal length f = 152.3068-582.0002mm
  • FNo. = 5.12-6.45
  • 2ω = 16.30-4.23 ° angle of view
  • 18 sheets 13 groups lens configuration
  • 5-group configuration of positive and negative positive negative
  • Inner Focus (the fourth group focus group)
  • Stabilizer (front group of the fifth group of anti-vibration group)
  • Reduce the size of the group of anti-vibration and focus group
  • To shorten the focal length of the front group of the fifth group, reduce the amount of movement of the time the anti-vibration
  • Joining the front group lens and the fifth group, when the spherical aberration correction of the anti-vibration, axial chromatic aberration and chromatic aberration of magnification

Source: [EG]

cr

11 Comments

Canon EF 600 f/4L IS II in the Wild

Canon EF 600 f/4L IS II in the Wild

They’re out there
We’ve been told by a couple of places, that the new EF 600 f/4L IS II is out there. Loaner copies of the lens have been sent to various manufacturers of accessories for measurement and that sort of thing. Multiple reports say they are fully functional production versions of the lens.

Lots of initial praise for the lens, especially how light it feels in comparison to the first IS version.

A very good sign indeed.

cr

4 Comments

Canon 18-45 f/3.5-5.6 Kit Lens for APS-C Mirrorless Patent

Canon 18-45 f/3.5-5.6 Kit Lens for APS-C Mirrorless Patent

Canon Mirrorless Fun
A patent showing  an 18-45 f/3.5-5.6 kit lens for an APS-C sensored mirrorless camera has appeared. That would be a 29mm-70mm lens when crop is factored in.

Source: [EG]

cr

73 Comments

New Lens on December 6, 2011? [CR1]

New Lens on December 6, 2011? [CR1]

New Lens(es)?
Are we getting a goodie before Christmas?

Received an email today saying Canon may announce a new lens on or around December 6, 2011.

This could just be in retaliation of the suspected Nikon announcements on November 30, 2011. No mention of what lens, which lowers the possibility in my eyes.

I can only think of one time a lens was announced and I had heard absolutely nothing about it, and that was the 55-250 II.

cr

38 Comments

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