October 25, 2014, 05:07:47 AM

Author Topic: Review - Canon EF 24-70 f/4L IS  (Read 20725 times)

JVLphoto

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Re: Review - Canon EF 24-70 f/4L IS
« Reply #15 on: May 06, 2013, 03:40:21 PM »
Good review....with current pricing I can see this is a considerably less expensive option to the 24-70mm 2.8L II....but I think it is a less convincing option to the 24-105mm, no? When comparing tele reach AND price this lens does not stack up unless the IQ is that much better.....
(Did I miss something Justin, or were you actually able to squeeze 73mm out of the lens for the shot of the child in the hat? AMAZING!).  ;D

Thanks, I've never used the 24-105 so purposefully avoided comparisons, I have no doubt somebody on this forum will chime win with some sort of spec/chart comparison to show off exactly how different they are at 37mm f/4.5.

As for the 73mm, that's what the exif read when I "pushed" the lens into Macro mode... not sure how accurate that is, but it *is* at the long end of the zoom range past 70mm on the marker.

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Re: Review - Canon EF 24-70 f/4L IS
« Reply #15 on: May 06, 2013, 03:40:21 PM »

JVLphoto

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Re: Review - Canon EF 24-70 f/4L IS
« Reply #16 on: May 06, 2013, 03:45:31 PM »
The initial lens reviews included a section on "CR's take" speaking about the lens from a rental company's perspective. I did find this section quite helpful as it gave some insight about durability and copy-to-copy variation. If would be great if this section could be added to the newer reviews as well.

On the review itself: I did not grasp what is so awkward about the semi-macro function (except for the close focusing distance, which does not come as a surpise given the focal length). The fact that the lens has semi-macro functionality makes it an interesting travel lens as it allows you to capture an occasional butterfly or flower while only carrying 1 compact lens. Justin, would it be possible to include one or a few macro shots in the review? I would be interested to learn how it compares to a 24-70 II or 24-105 with an extension tube attached. A general comparison to the 24-105 would also be nice to include. In my view the 24-70 f4 is much more of a competitor/alternative to the 24-105 f4 than to the 24-70 f2.8 II (in terms of price range, speed and presence of IS); both f/4's are interesting travel lenses.

The lens-cap image *is* a macro photo, I'll see what else I have, though it was winter which is not my favourite macro season.

And I agree with you that having the feature/option is better than not, I just found I was *so* close to my subjects that I blocked out the light, which made macro a fairly awkward achievement (I've used both Canon 60mm and 100mm macro's and own the 100mm f/2.8 L IS).  I just don't want anyone buying this lens thinking they're going to be going around with a great macro lens because, really, it's not, it's just a good utilitarian lens which, like you mentioned, is great for going around and travelling with.

Sadly I've never used the 24-105 f/4 L IS, and we don't know what it's fate will be, but surely someone here will bring it up soon enough ;)

JVLphoto

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Re: Review - Canon EF 24-70 f/4L IS
« Reply #17 on: May 06, 2013, 03:49:24 PM »
The issue is not the lens, the issue is the value of the lens. 24-105L's are good enough for 700$.  :P

Well put.

JVLphoto

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Re: Review - Canon EF 24-70 f/4L IS
« Reply #18 on: May 06, 2013, 03:51:24 PM »
With Nikon offering a 24-120, perhaps that's what Canon has their eyes on instead. And, if so, how much will it be?

infared

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Re: Review - Canon EF 24-70 f/4L IS
« Reply #19 on: May 06, 2013, 07:30:09 PM »
Good review....with current pricing I can see this is a considerably less expensive option to the 24-70mm 2.8L II....but I think it is a less convincing option to the 24-105mm, no? When comparing tele reach AND price this lens does not stack up unless the IQ is that much better.....
(Did I miss something Justin, or were you actually able to squeeze 73mm out of the lens for the shot of the child in the hat? AMAZING!).  ;D

Thanks, I've never used the 24-105 so purposefully avoided comparisons, I have no doubt somebody on this forum will chime win with some sort of spec/chart comparison to show off exactly how different they are at 37mm f/4.5.

As for the 73mm, that's what the exif read when I "pushed" the lens into Macro mode... not sure how accurate that is, but it *is* at the long end of the zoom range past 70mm on the marker.
Hmm... The 73mm exif data is a bit odd...thanks for clarifying that stat...I should have known that you would have your facts correct!
5D Mark III, Canon 15mm f/2.8 Fisheye, Canon 17mm f/4L TS-E, Canon 16-35mm f/4L IS, 21mm f/2.8 Zeiss, Sigma 35mm f/1.4, 24-70mm f/2.8 II, 50mm f/1.4 Sigma Art, 85mm f/1.2L, 100mm f/2.8L Macro,70-200mm f/2.8L IS II...1.4x converter III, and some other stuff.....

Daniel Flather

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Re: Review - Canon EF 24-70 f/4L IS
« Reply #20 on: May 07, 2013, 12:16:05 AM »
With Nikon offering a 24-120, perhaps that's what Canon has their eyes on instead. And, if so, how much will it be?

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Jack Douglas

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Re: Review - Canon EF 24-70 f/4L IS
« Reply #21 on: May 07, 2013, 01:32:57 PM »
Some casual shots using the 24-70 F4 with the 40D (my 6D is in for check-up).

Jack
6D  24-70 F4  70-200 F2.8 II  300 F2.8 II  1.4X III  2X III

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Re: Review - Canon EF 24-70 f/4L IS
« Reply #21 on: May 07, 2013, 01:32:57 PM »

Jack Douglas

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Re: Review - Canon EF 24-70 f/4L IS
« Reply #22 on: May 07, 2013, 01:37:33 PM »
40D/24-70 F4
6D  24-70 F4  70-200 F2.8 II  300 F2.8 II  1.4X III  2X III

Jack Douglas

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Re: Review - Canon EF 24-70 f/4L IS
« Reply #23 on: May 07, 2013, 01:40:00 PM »
more 40D/24-70 F4
6D  24-70 F4  70-200 F2.8 II  300 F2.8 II  1.4X III  2X III

Jack Douglas

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Re: Review - Canon EF 24-70 f/4L IS
« Reply #24 on: May 07, 2013, 01:42:03 PM »
40D/24-70 F4
6D  24-70 F4  70-200 F2.8 II  300 F2.8 II  1.4X III  2X III

Jack Douglas

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Re: Review - Canon EF 24-70 f/4L IS
« Reply #25 on: May 07, 2013, 01:44:06 PM »
40D/24-70 F4
6D  24-70 F4  70-200 F2.8 II  300 F2.8 II  1.4X III  2X III

Trondster

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Re: Review - Canon EF 24-70 f/4L IS
« Reply #26 on: May 08, 2013, 07:08:16 AM »
How is the focus shift? According to the Photozone review, the focus shift is so bad that the foreground gets more out of focus as you stop down - at least at close focus distances. What are your experiences regarding focus shift?
If the focus shift is as bad as the Photozone review says, it would be a showstopper for me.

JVLphoto

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Re: Review - Canon EF 24-70 f/4L IS
« Reply #27 on: May 08, 2013, 09:20:52 AM »
How is the focus shift? According to the Photozone review, the focus shift is so bad that the foreground gets more out of focus as you stop down - at least at close focus distances. What are your experiences regarding focus shift?
If the focus shift is as bad as the Photozone review says, it would be a showstopper for me.

Wow, I wasn't aware of that and, honestly, in my non-lab use of it I didn't notice the issue.  So obviously it's something that will come up under those specific conditions, which weren't replicated (or noticeable) in my day-to-day.

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Re: Review - Canon EF 24-70 f/4L IS
« Reply #27 on: May 08, 2013, 09:20:52 AM »

carpandean

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Re: Review - Canon EF 24-70 f/4L IS
« Reply #28 on: August 08, 2013, 09:10:33 AM »
(Excuse the slight necro-post.)

One thing that I've always been interested in is the concept of T-stops, in addition to the usual F-stops.  For equal F-stops, two lenses on the same camera will have the same DOF, but not necessarily the same brightness.  This is where T-stops ('T' for transmission) come into play.  Differences have typically been small for lenses of the same type (zoom or prime) and aperture, so usually just F-stops are given.

However, in looking at the 24-70mm f/4L IS, I did happen to look at DxOMark's (I try not to focus on curves and such, but I don't discount them completely, either) transmission rating for the lens.  It actually had a T rating of 4.0.  This is not uncommon for a prime, but unusual for a zoom.  Comparing with the 24-105mm, which is rated a 5.1, I found that it is approximately 2/3 of a T-stop brighter across the range of focal lengths.  This may not be huge, but it might be just enough to keep motion blur to an acceptable level in lower-light situations or in fast-action situations by using a faster shutter speed or to allow for less noise by using lower ISO.

Almost as surprising is that it is just 1/3 of T-stop behind the 24-70mm f/2.8L (first version), which is rated a 3.6!  Conversely, the 24-70mm f/2.8L II is rated a true 2.8.  These relative differences are almost certainly due to the newer designs being more efficient and/or having better coatings.

Unfortunately, that doesn't do much for the Tamron 24-70mm f/2.8 VR, as that lens is also rated an f/2.8!
« Last Edit: August 08, 2013, 09:13:15 AM by carpandean »

tat3406

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Re: Review - Canon EF 24-70 f/4L IS
« Reply #29 on: December 08, 2013, 11:16:25 PM »
Have this lens for two weeks! one weekend went hiking and one weekend shoot wedding. Very good lens, sharp, good contrast from wide end to tele end. Only shortcoming is expensive price for F4 general lens, but I bought below $1000 for white box version at used market.

The size very compact, focus is fast and accurate, IS very effective. Macro mode is nice but working distance very short, need to avoid cast shadow of the lens to subject.

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Re: Review - Canon EF 24-70 f/4L IS
« Reply #29 on: December 08, 2013, 11:16:25 PM »