Canon's latest 24-70mm lens is loaded with goodies: Weather sealing, Hybrid IS, a macro mode, and a minimum focus distance of 0,2 meters.

Canon EF 24-70mm f/4L IS USM zoom lens Review by Bryan Carnathan at The-Digital-Picture.

Bryan is very impressed by the macro mode this lens provides:

"Canon has been turning out impressively-performing zoom lenses recently and I was quite excited to see a repeat performance from this lens. After evaluating three retail-purchased copies of this lens, here are my observations. With a wide open f/4 aperture: At 24mm, the Canon EF 24-70mm f/4 L IS USM Lens is very sharp in the center with good sharpness extending to the periphery of the full frame image circle. The 24-70 f/4 L IS gets very slightly softer at 35mm and modestly softer yet (especially in the mid and peripheral image circle) at 50mm f/4 where the lens performs its worst. Sharpness improvement by 70mm . . . read more

Canon EF 24-70mm f/4L IS USM at the DXO Mark bench: The ideal standard zoom?

Maybe, but under two conditions: You cannot/will not afford the superior EF 25-70mm f2.8L II, or you have forgotten that the 24-105mm f4L IS USM also exists:

"The overall DxOMark score of 19 shows this is not one of the best lenses tested, but there are some areas where it is remarkably good for a zoom lens. Taking the overall DxOMark score of 19, we can see that the lens is not an especially high performer in terms of overall image quality. However, looking at the scores in detail, we can see where the lens fall down. . . . read more

Canon EF 24-70mm f/4L IS USM lens Review by Andrew Alexander at SLR Gear: 'Performance at 50mm was unacceptable, even after we had to go through 3 copies of this lens to find the best one."

Another day, another review, and another case of a bad copy lens, an issue I too was confronted with time and again when i bough expensive Canon Glass in the past. Canon L=Lazy quality control? 

"Canon made a smart decision to offer a lower-priced alternative to its 24-70mm ƒ/2.8, in order to give Canon shooters of the more casual or economical nature a way to stay true to the brand name. Unfortunately the lens' performance at 50mm stands out as unacceptable, especially when you consider the lower-priced option here still costs $1,500. Coupled with the fact that we had to seek out the best version to get even these results, this does not breed confidence in the lens. . . . read more

Canon EOS 6D full frame Dslr review by Joshua Waller at EPZ: The Canon EOS 6D delivers excellent image quality at low noise levels and is feature packed.

The camera was tested with the Canon EF 24-70mm f/4L IS​ and  EF 50mm f 1.4 USM lenses.

"The Canon EOS 6D feels like it's an improvement over the Canon EOS 5D Mark II, and gives most of what you get with the 5D Mark III, but with the addition of GPS and Wi-Fi, as well as the excellent 20.2 megapixel sensor for improved noise performance, but with a fraction of the price of the 5D Mark III, making this an excellent camera for those wanting a full-frame Digital SLR. Image quality is impressive with excellent colour both in photos and on the rear screen of the camera, and noise performance is excellent. Focus performance is good with 11 point auto focus that works . . . read more

Canon EF 24-70mm f/4L IS USM lens Review by Mark Goldstein at the Photography Blog: If you can afford the hefty price tag then we can highly recommend the Canon EF 24-70mm f/4L IS USM as an excellent standard zoom lens for Canon full-frame DSLR owners.

The Lens was tested with a Canon EOS 6D Full frame camera. On a cropped Dslr its reach would be between the 'not wide enough' and 'not long enough'.

"The Canon EF 24-70mm f/4L IS USM is a very capable but also very pricey standard zoom lens that will appeal most to wedding and reportage photographers looking for a lightweight and responsive lens. It also usefully doubles up as a competent macro lens, perhaps saving the extra expense and space required by another dedicated optic.Given its L-series billing, the Canon EF 24-70mm f/4L IS USM build quality is reassuringly excellent and it makes a perfect partner to a full-frame Canon DSLR like the EOS 6D that we tested it with. Auto-focusing is quiet and quick, with the ability to manuall . . . read more

Canon EF 24-70mm f/4 L IS USM lens review by Ken Rockwell: The Canon 24-70mm f/4 L is excellent. Its sharpness varies very little from center to edge and stays about the same with aperture changes.

The lens was tested with a Canon 5D Mark III Dslr body:

"So long as you're in focus, sharpness doesn't vary much from perfection, except by f/11, where diffraction softens the image. Hey, sorry to spare you endless boring charts, but with a lens this good, there's nothing to show other than sharp pictures under all conditions. With a lens profile on my Canon 5D Mark III or similar camera, falloff is never visible at any setting. Flare and ghosts are very well controlled, but if you push it, you will get a green dot or two. . . . read more

Canon 24-70mm f/4.0 L IS lens Resolution Tests by Roger Cicala at Lens Rentals: This is a good lens, but I at the price point I’d probably prefer the f/2.8 of the Tamron VC to the new Canon’s f/4.

"Obviously this hasn’t told us a thing about autofocus accuracy, bokeh, or a dozen other things that have to be considered when choosing a lens. Just like you, I’ll be waiting for more complete reviews to tell us about that.

On the basis of this information, though, I’m . . .  well, I don’t know what I am. This is a good lens, but I at the price point I’d probably prefer the f/2.8 of the Tamron VC to the new Canon’s f/4. The macro feature is nice and will certainly pull some

. . . read more

Overview

Description by Canon:

A versatile standard zoom well suited to full-frame EOS cameras and a variety of subjects
A versatile 24-70mm f/4 L-series lens with macro mode for up to 0.7x magnification. Ultrasonic AF provides fast, near-silent focusing. UD and aspherical elements deliver superb image quality.

Canon EF 24-70mm f/4 L IS & EF 35mm f/2 IS leak all over the internet, despite being waterproof.

Well, not waterproof but rather 'weatherproof'. Leak originated at the Japanese site Digicame-info.com The 35mm deal seems to be quite ordinary, but this is not the case with the 24-70mm lens. Some of its highpoints include Hybrid IS, weather sealing, a macro mode (available at the tele end of the lens), and a minimum focus distance of 0.2 meters.

The not so good feature is the cost, the claimed Japanese street price of ¥ 74 000 translates to roughly $ 1800. Both lenses will be available late December 2012. . . . read more

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