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Thread started 07 Feb 2012 (Tuesday) 00:28
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Canon EF 24-70mm f/2.8L II USM

 
demondrive1
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May 14, 2013 14:55 as a reply to  @ post 15928681 |  #1111


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Canon 5D Mark iii.Canon 5D Mark ii ,.Ef 24-70 ii.Canon 50mm f 1.2,Sigma 12-24mm and a few speedlights..
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demondrive1
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May 14, 2013 15:01 as a reply to  @ demondrive1's post |  #1112


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Canon 5D Mark iii.Canon 5D Mark ii ,.Ef 24-70 ii.Canon 50mm f 1.2,Sigma 12-24mm and a few speedlights..
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marlonie
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May 14, 2013 22:12 |  #1113

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basketballfreak6
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May 17, 2013 08:54 |  #1114

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5DIV, 5DIII, modified 760D, 16-35L f/4 IS, 24-70L II f/2.8, 70-200L IS II f/2.8, S150-600 f/5-6.3 SPORT, S14 f/1.8 ART, S50 f/1.4 ART, S135 f/1.8 ART, 100L IS Macro f/2.8

  
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thesilentman
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May 17, 2013 10:36 |  #1115

https://photography-on-the.net …/showthread.php​?t=1300612

Please take a look at this thread and help me put my mind at ease with the zoom ring problem I have with this lens.


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ctdslrnewb
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May 17, 2013 15:13 |  #1116

That looks delicious!!


Canon EOS 60D | EF 24-70mm f/2.8 L MkII | EF 50mm f/1.8 Mk I | EF 28mm f/1.8 | EF 85mm f/1.8 | EF-S 18-55mm f/3.5-5.6 IS |
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basketballfreak6
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May 17, 2013 17:23 |  #1117

ctdslrnewb wrote in post #15941881 (external link)
That looks delicious!!

and it was! :D


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marlonie
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May 18, 2013 20:47 |  #1118

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MakisM1
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May 19, 2013 20:35 |  #1119

I opened a new thread here:

https://photography-on-the.net …/showthread.php​?t=1301124

I am reproducing it here, because I need the opinion of people who have experience with it! Here it goes:

I bought the EF 24-70 MkII 3 days ago from B&H to use with my 60D camera.

First thing I did was to test the 24 mm FL and the 70 mm FL against a target approximately 20xFL away. The quickie results were OK so I waited for later in the day to go on a photo walk in the neighborhood.

I came back with the largest percentage of non-keepers ever. :cry:

A lot of the non-close up photos came out well, with impressive rendering and sharpness.

The close-ups, although nowhere near the MFD were in the most part an unmitigated disaster. Front-focused, back-focused and some sharp focused.

Here are a couple of nice examples:

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For the terrible ones, you'll have to take my word for it...;)

Thinking about it, I decided to do a detailed test.

3 apertures f2.8 f5.6 f8.0

4 FL 24 mm, 35 mm, 50 mm, and 70 mm.

Distance to target 14 in (yes I know...) 20 in, 36 in, 60 in 135 in.

Every shot was focus individually starting from infinity and double clicking the BBF in One_shot. I have results from AI-Servo which at times are worse...

The target is laid out quite nicely you position it square to your lens axis and you get a graduated scale at 45 degrees angle. The graduations are such that the length along the lens axis is in centimeters.

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70 mm at f2.8 at 135 in (3500 mm)

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70 mm at f2.8 at 1500 mm distance

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35 mm at f2.8 at 1000 mm distance

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I have a spreadsheet with the complete matrix of tests and I can't make rhyme or reason out of it. One thing is certain, it will front focus, back focus all over the place.

And we are talking percentage points of the whole distance...


The results are all over the place... What I find befuddling is that the front/backfocusing will change for a certain focal length with distance and sometimes with aperture.

Given that I have a 60D with no MFA, this lens is going back to B&H as soon as I get an RMA.

Question is:

Is this common, or should I try the lottery again?

Gerry
Canon 5D MkIII/Canon 60D/Canon EF-S 18-200/Canon EF 24-70L USM II/Canon EF 70-200L 2.8 USM II/Canon EF 50 f1.8 II/Σ 8-16/ 430 EXII
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4g63photo
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May 21, 2013 20:16 |  #1120

What did the folks at Canon suggest?


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4g63photo
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May 22, 2013 15:52 |  #1121

Wow. Just received my copy yesterday. Im impressed with the lens. I got lucky and seem to have recieved a nice sharp copy. Heres a shot of my awesome wifes eye cropped at 100%. Jpeg straight out of the camera, no retouching at all.
Build wise I feel its the usual L build. Not much different that the 24-105. I like the new hood design and new pinch cap.

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May 22, 2013 16:09 |  #1122

MakisM1 wrote in post #15948155 (external link)
I opened a new thread here:

https://photography-on-the.net …/showthread.php​?t=1301124

I am reproducing it here, because I need the opinion of people who have experience with it! Here it goes:

I bought the EF 24-70 MkII 3 days ago from B&H to use with my 60D camera.

First thing I did was to test the 24 mm FL and the 70 mm FL against a target approximately 20xFL away. The quickie results were OK so I waited for later in the day to go on a photo walk in the neighborhood.

I hate to say this but you are testing an expensive, high precision piece of equipment using print out mounted on a homemade stand. I should start to make surgical equipment with a sledgehammer and a file and sell it to hospitals :D

Sorry for being blunt. I don't trust myself as a camera lens technician with the lastest and best MFA techniques out there. Canon does recommend the target is perfectly parallel to the camera sensor. How do you know you are achieving this with your set up? If you are unsure send it to Canon. Let them verify your lens is set to spec and then MFA it to fine tune it which should only be a few ticks.


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digital ­ paradise
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May 22, 2013 22:51 |  #1123

By the way I don't doubt you were having issues with your lens. I have been down that road. I learned to be careful with MFA methods. I'll test MFA if I'm convinced the lens is at factory spec and if it is I rarely need need it. I just got my 70-200 2.8 II back from NJ today for a similar issue. It was not nearly as bad as your lens seemed to be but I did not think it performed as the MTF charts indicated it should. Canon did make several adjustments to it. Have not tested it yet.


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DamianOz
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May 22, 2013 23:36 |  #1124

I use FoCal to MFA my lenses, however you have stated your 60D doesn't have MFA, so its no help.
I do find with some lenses the adjustment required varies at different focal lengths and subject distance, this is not uncommon.
Fortunately the 5D3 has MFA at two points for zoom lenses, you adjust for long and wide ends of the lens.

Once adjusted I found that my 24-70II is extremely consistent.

Changing the aperture is going to effect the DOF, making any variation more pronounced, I always make adjustments wide open.

I have to agree with the above, the 60D is not able to get the best out of this lens. May be another sample will match your body better, it may not. The best option IMO would be have Canon test it.


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Primes - TS-E24 f/3.5L II | Σ 35mm F1.4 DG Art | EF 85 f/1.2L II | EF 135 f/2L
Zooms - EF 16-35 f/2.8L II | EF 24-70 f/2.8L II | EF 70-200 f/2.8L IS II | Σ 24-105mm F/4 DG OS Art | Σ 120-300mm F/2.8 DG OS Sport

  
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photoluminaire
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May 25, 2013 13:51 |  #1125

I just got a 24-70II and I have the old 24-70.
At 24mm its no contest, the 24-70II has a lot less CA and is sharp all over.
At 35mm the old one is sharper at the sides of the image. I think maybe field curvature related.
At 50mm it is similarly not great
At 70 and a distant subject the field curvature is extreme on the new lens. Focused 10-20m out at the corners and 100m in the middle. Stopping down doesn't help the field curvature.
Potrait focusing distance, 70mm looks nice and sharp at f2.8.
Any advice? Is this a lemon or do all the 24-70 IIs behave like this?
Thanks,
Andrew




  
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