Archive for: EF 24-70 f/2.8L IS

EF 24-70 f/2.8L IS Exists as a Working Prototype [CR2]

It’s not coming soon
There are plans to release an EF 24-70 f/2.8L IS sometime in the next 18 months. I have confirmed from two sources that the end of 2013 or early 2014 is the earliest we’d see a production model announced.

There are no plans for a non-IS 24-70 f/4L.

Canon EF 24-70mm f/2.8L II USM Zoom Lens $2049 (Save $250)

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Canon EF 24-70 f/2.8L IS [CR1]

Thinks that make you go…..
I have received two separate communications in regards to an EF 24-70 f/2.8L IS  being in the wild in prototype form. We knew this prototype has existed for quite some time, however we figured the concept was dead with the release of the EF 24-70 f/2.8L II. Canon would bring this lens to market alongside the non-IS version. Canon already does this with the 70-200 f/2.8s & 70-200 f/4s, so it’s possible they bring it to the standard zooms as well.

It’s a bit early to talk about pricing strategy, but the new EF 24-70 f/2.8L II will drop in price over the next 12 months, as you can see by the recent big drops to the EOS 5D Mark III.

This is from a new source, take this with a grain of salt. I’m intrigued as I do know the IS version exists.

The timelines for future lenses seem to all be going into 2013, more on that later.

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Patent – Canon EF 24-70 f/2.8L IS

You want IS?
A patent for an EF 24-70 f/2.8L IS has surfaced finally, this has been a lens that has been talked about and desired for a long time.

We mentioned some time back that there were 5 or 6 version of the new 24-70, and one of them had IS. Canon decided against an IS version for reasons to do with weight, size and cost from what I’m told.

Sadly for the ones that want an IS version of this lens, I have little faith that such a lens will be coming any time soon. Patents can sometimes appear after a product has been announced, and that’s probably what has happened here.

Canon EF 24-70 f/2.8L IS

Patent Publication No. 2012-123156

• 2012.6.28 Release Date
• 2010.12.8 filing date

Example 1

• Zoom ratio 2.46
• 68.99mm – f = 28.00 focal length
• Fno. 2.88
• 17.41 deg – 37.69 half angle of view.
• Image height 21.64mm
• 222.38mm – 192.25 full-length lens
• BF 39.98 – 53.68
• Effective diameter 74.47mm ball before
• Effective diameter aperture 31.23mm
• 19 sheets 12 group lens configuration
• Three three aspherical surface
• 2 UD glass sheet

Example 2

• Zoom ratio 2.86
• 68.70 – f = 24.00 focal length
• Fno. 2.88
• 17.48 deg – 42.03 half angle of view.
• Image height 21.64mm
• 224.86mm – 191.93 full-length lens
• BF 39.85 – 55.68mm
• Effective diameter 77.29mm ball before
• Effective diameter aperture 32.58mm
• Lens Construction 12 group 21 sheets
• Three three aspherical surface
• 2 UD glass sheet
• Five-group zoom positive and negative positive positive and negative
• (For Focusing group 2) Inner Focus
• (Part 1 of the fourth lens group, anti-vibration unit is L4a) image stabilization

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