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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 15 May 2018 (Tuesday) 04:28
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24-70 f/4 USM IS L mkii

 
DaveHWales
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May 15, 2018 04:28 |  #1

Hi.
I was given this lens as a Xmas gift from my partner, and am having a serious issue with it.
Every autofocussed image, at every aperture setting, shutter speed and focal length, in different lights, indoors and out, IS on or off requires sharpening in post.
I don't mean a minor touch up, I mean heavy on the sharpening tool.
Is this a known issue, or have I got a 'soft' copy?
Thanks




  
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Canon ­ Bob
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May 15, 2018 05:07 |  #2

It would appear that there is considerable variation with this lens, Dave. Mine was similarly uninspiring as far as sharpness goes (AF or manually focussed) and I eventually traded it in. Others seem to have had more success so I do suspect production QC isn't perhaps all that it should be.

Have you tried to see if you get batter results focussing with Liveview?....I couldn't.

Bob


1Dx2 (2), 5DSR, 1D4, 5D2(590nm), 5D2(720nm) EF600 EF400 EF300-II EF300 EF200 EF200-II EF180L EF135L EF100 EF85-II EF50L TS-E17/4 TS-E24L-II TS-E45 TS-E90 MP-E65 EF70-200-II EF24-70/2.8-II EF16-35/4 EF8-15/4 EF11-24/4 Zeiss 15/2.8 21/2.8 25/2 28/2 35/1.4 35/2 50/2 85/1.4 100/2 135/2 T/C's L-SC & a WIFE!

  
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DaveHWales
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May 15, 2018 06:50 as a reply to  @ Canon Bob's post |  #3

Thanks for the reply Bob.
I haven't tried LiveView, but I know that using it won't be something I look forward to. Too much like using a phone cam or a compact!
I may return the lens to Canon under warranty, see what they can come up with.




  
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James ­ P
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May 15, 2018 07:02 as a reply to  @ DaveHWales's post |  #4

I would send that lens back. I have one and mine has been tack sharp since the first day I bought it.


1Dx - 5DIII - 40D - Canon 24-70LII, 100L macro, 135L, 16-35L, 70-200 f4 and 100-400L lenses

- "Very good" is the enemy of "great." Sometimes we confuse the two.

  
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DaveHWales
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May 15, 2018 07:07 as a reply to  @ James P's post |  #5

Seems like that's my best option James.
Thanks for the input.




  
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Canon ­ Bob
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May 15, 2018 07:25 |  #6

DaveHWales wrote in post #18626013 (external link)
I haven't tried LiveView, but I know that using it won't be something I look forward to. Too much like using a phone cam or a compact!

Liveview wasn't a usage recommendation but simply to see if sharp images could be obtained by bypassing the AF system.


1Dx2 (2), 5DSR, 1D4, 5D2(590nm), 5D2(720nm) EF600 EF400 EF300-II EF300 EF200 EF200-II EF180L EF135L EF100 EF85-II EF50L TS-E17/4 TS-E24L-II TS-E45 TS-E90 MP-E65 EF70-200-II EF24-70/2.8-II EF16-35/4 EF8-15/4 EF11-24/4 Zeiss 15/2.8 21/2.8 25/2 28/2 35/1.4 35/2 50/2 85/1.4 100/2 135/2 T/C's L-SC & a WIFE!

  
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DaveHWales
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May 16, 2018 03:18 |  #7

Update:
Called my local Canon partner (Canon have no stores in the UK), and will be taking the lens to them to check and recalibrate if necessary.
Fingers crossed they can fix it!




  
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DaveHWales
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May 25, 2018 08:00 |  #8

So......
Took the lens and body (6D) to my local Canon partner, where they say they calibrated it, and all is now fine.
Not so.
It's still soft, even wide open.
One thing I noticed when I got it back was that the IS was still switched ON, as I left it, and the ISO was set to 400, as I left it.
I believe that proper calibration can only be done with IS off and ISO at 100?
Anyway, I think it has to be a duff lens, since I'm getting the kind of images I'd expect from a Kodak Instamatic, not a Canon 6D with an L lens.
Unless there's an issue with the camera's AF, of course!
This photography lark is frustrating....




  
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deanedward
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May 25, 2018 11:22 |  #9

so did you try shooting it in live view? how are your other lenses performing on the 6D? can you please post a sample photo of what you consider to be a soft image?


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Choderboy
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May 25, 2018 12:16 |  #10

OK, I will be the one to ask: Is your lens a 24-70 f4 L IS? The reason for asking is you have 'mkii' in your title but there is only a first version of this lens.

The 24-105 F4 L IS has a MKII and both versions have IS.


Dave
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amfoto1
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Post edited 2 months ago by amfoto1.
     
May 25, 2018 16:28 |  #11

Choderboy wrote in post #18632480 (external link)
OK, I will be the one to ask: Is your lens a 24-70 f4 L IS? The reason for asking is you have 'mkii' in your title but there is only a first version of this lens.

The 24-105 F4 L IS has a MKII and both versions have IS.


Yeah, I was going to ask too.

It's EITHER a 24-70mm f/4L IS USM... OR a 24-70mm f/2.8L USM II (no IS).

Since original poster noted turning IS on, I'm going to assume it's the former (i.e., it's not a "II", since none exists).

First question: Do you have a "protection" filter on it? If so, try without any filter.

Next question: Have you set Micro Focus Adjustment with the lens on your particular camera? If no, that might be worth a try.

Next set of related questions: What are you comparing it to... what other lenses do you use... and how do you use it... what do you shoot? The reason I ask these is to gauge your expectations and whether or not the lens is a "good fit" for you. For example, I've mostly seen comments that this particular lens is weakest at 50mm setting, which is something I rarely use on my full frame camera, so that wouldn't bother me. I also know it has some "focus breathing" at closer distances... but it also has an unusually high magnification "Macro" setting (0.70X, which is triple that of most zooms around this range), which is quite good and would mean I could leave my macro lens at home most days.

Final question: Have you tried it with the IS turned off? That "locks"a group of elements in place that are normally allowed to move to counteract camera shake.

Most reviews give the lens high marks, And their tests and sample images done with it seem to support their conclusions. See:

https://www.the-digital-picture.com …L-IS-USM-Lens-Review.aspx (external link)
https://kenrockwell.co​m/canon/lenses/24-70mm-f4.htm (external link)

But not everyone is enamored with it and one reviewer had to exchange it for other copies a couple times to get what they felt was a "good copy". See:

https://www.imaging-resource.com …4-70mm-f4l-is-usm/review/ (external link)
https://www.thephoblog​rapher.com …-canon-ef-24-70mm-f4l-is/ (external link)

One of those reviewers compares it not too favorably to the older, original 24-105L... which I've been unimpressed with (and didn't get improved much in terms of image quality with the "II" version... mostly got better IS and, maybe, built/durability).

Overall... The 24-70mm f/4 IS USM is not a match for the 2X as expensive 24-70mm f/2.8L "II", which many consider to be one of the best lenses in this range ever made. But at the price, I'd say it's pretty darned good.

We also don't know your level of experience, skill and technique... any of which might be a factor.

Yes, it could be a "soft copy". That happens, though it's relatively rare. Especially with L-series lenses. But, if you can believe the reviews, apparently may be more common with this lens than with some others.

Try to eliminate other possibilities and if the lens still doesn't "wow" you, try exchanging it to see if another copy is better, or trade it toward and some additional money toward one of the even higher end models.


Alan Myers (external link) "Walk softly and carry a big lens."
5DII, 7DII(x2), 7D(x2) & other cameras. 10-22mm, Tokina 12-24/4, 20/2.8, TS 24/3.5L, 24-70/2.8L, 28/1.8, 28-135 IS (x2), TS 45/2.8, 50/1.4, Tamron 60/2.0, 70-200/4L IS, 70-200/2.8 IS, 85/1.8, Tamron 90/2.5 Macro, 100/2.8 USM, 100-400L II, 135/2L, 180/3.5L, 300/4L IS (x2), 300/2.8L IS, 500/4L IS, EF 1.4X II, EF 2X II. Flashes, studio strobes & various access. - FLICKR (external link) - ZENFOLIO (external link)

  
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DaveHWales
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Post edited 2 months ago by DaveHWales.
     
May 26, 2018 03:52 |  #12

Yes, apologies for the 'mkii' - It's not!
It's the 24-70 f/4 IS USM L lens.
I have used it with the IS off and on, at most focal lengths, shutter speeds and apertures, but just can't get a decent tack sharp shot. I normally have a Hoya Pro1 UV filter on, but have also tried without - same result. Maybe I'm expecting too much from a 'prosumer' lens?
I take mainly portraits, outdoors in a sporting environment, but not a fast moving one - Crown Green Bowling.
Below is a test shot I took of my garden shed it's a 100% crop from the very centre of the image - exif data included.
And then a sample of my main interest. This is uncropped.


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Choderboy
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May 26, 2018 04:44 as a reply to  @ DaveHWales's post |  #13

100% crop looks ballpark OK.

2nd shot, not worth evaluating. f13 and 1/60 sec. Obvious motion blur in the man with yellow top.
Man on the right maybe motion blur too, on very edge of frame. Not great light (for evaluation)


Dave
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JohnB57
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Post edited 2 months ago by JohnB57.
     
May 26, 2018 07:35 |  #14

Dave. What image quality setting are you using and also which browser software - e.g. Zoombrowser, Photoshop, etc? I’m assuming the images you posted are unedited straight-out-of-camera JPEGs?




  
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DaveHWales
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Post edited 2 months ago by DaveHWales.
     
May 26, 2018 10:57 |  #15

I'm set to RAW, converted to JPEG by Canon Digital Photo Professional.
The RAW images are as bad as you see here, after conversion.
Here's another from today - 1/1600 shutter speed, to remove motion blur, 70mm focal length, ISO 640 to help the light.
The focus is exactly on the gentleman's ear, and this is the garbage that came out!


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24-70 f/4 USM IS L mkii
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