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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 24 Dec 2012 (Monday) 08:07
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24-105 Sharpness

 
TheFarmer
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Dec 26, 2012 04:59 |  #16

I've always thought my 24-105L was pretty sharp. On my previous 7D and my 5D Mark III. I'm not a pro pixel peeper though.


5DM3 | 35mm F2 | Sigma 50mm 1.4 | 24-105 F4L | Canon GP-E2 GPS | Canon ST-E3-RT | 2x 600EX-RT | The End

  
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2slo
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Dec 26, 2012 11:45 |  #17

smorter wrote in post #15407763 (external link)
The 24-105L is quite mediocre in the sharpness department - it's usable, but never reaches the crisp sharpness that other lenses reach

Disagree. Your copy maybe, but not the lens in general.




  
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Invertalon
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Dec 26, 2012 12:35 |  #18

Yeah, I always found the two copies of the 24-105L I had both very sharp. I used them wide open most of the time without thinking twice. Rarely ever stopped down for more sharpness. Only at 24mm for landscape stuff to sharpen the corners.


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Hitthespot
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Dec 26, 2012 14:35 as a reply to  @ Invertalon's post |  #19

It is a well documented fact that some 24-105 lenses don't play nice with a Canon 7D. Google and you should find some information on it. I had two such cases and if you search my name I'm sure you can find my posts. I now have a 24-105 that is excellent with my 7D and I wouldn't take a pound of gold for it.


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Invertalon
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Dec 26, 2012 15:24 |  #20

Well documented?

I think people either:

1.) Don't have it microadjusted correctly
2.) Don't AF correctly
3.) Expect too much from the lens

I used (2) 24-105's on my 7D and both were near identical IQ wise, and both fantastic. There may be a dud here and there, sure... But I highly doubt there is any real issue with this combo other then user variables.


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Hitthespot
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Dec 26, 2012 16:21 |  #21

Invertalon wrote in post #15409697 (external link)
Well documented?

I think people either:

1.) Don't have it microadjusted correctly
2.) Don't AF correctly
3.) Expect too much from the lens

I used (2) 24-105's on my 7D and both were near identical IQ wise, and both fantastic. There may be a dud here and there, sure... But I highly doubt there is any real issue with this combo other then user variables.

Normally I wouldn't answer a post like this, but what the heck.

First off the odds of micro adjusting a Zooms lens is questionable. Micro adjust even according to canon is for Prime lenses only. If you micro adjust a lens that focuses corectly at 24mm but is soft at 104mm will probably be out of focus at 24mm when correct at 104mm. Second, when the 7D first came out there was a rash of posts and blogs about the focusing problems with the 7D and certain lenses, and some of these post were made by very astute photographers. I don't know if its still floating around but the first blog I found showed (with pictures I might add) how soft the 7D was with his 24-105 and perfectly fine with other camera bodies. There was no explanation that could be found. I ran into the same problem with my first 24-105. Soft on my 7D and fine with every other camera in the camera store. I have a long post about this somewhere. So some can spout all they want how it's user error, but quite frankly there are a number of us who know how finicky some 7D's are with some lenses that work fine on other cameras. AND I love my 7D, I'm not a basher.


Canon 7D, 24-105 f/4L IS, 70-200 f/4L IS, 100-400 f/4.5-5.6L IS, 430EX II,

  
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Invertalon
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Dec 26, 2012 16:24 |  #22

I had a 7D for well over a year and never had an issue with any lens that was not at fault of the lens. My 24-105 was off on both ends of the zoom range, at 24mm, it was perfect. At 105mm, it was +9... Like you said, with a 7D you can only calibrate only one point.

I sent to Canon and they calibrated the lens. Came back perfect on both ends. This was my first copy. My second one was perfect out of the box, 0 on both ends.

All you have to do is send the lens to Canon to get any focusing issues fixed, granted you bought it new and not used and have a warranty.


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smorter
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Dec 26, 2012 16:30 |  #23

It's not a calibration issue, I'm talking about softness - calibration is irrelevant when a lens is stopped down and manually focused

I have owned two copies of this lens and hand picked the best one. Even it is not ad good as something like a Tokina 12-24 stopped down (mounted on FF)


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wayne.robbins
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Dec 26, 2012 21:52 |  #24

The 24-105L was my first L.. Sort of disappointed at first... I too, thought it wasn't as sharp as "L"'s should be.

The obvious thing that you should do- is to put your camera into liveview on a tripod- and take a picture that way-and examine sharpness .. Use a remote if you can.. Absolute best way to see what a lens is truly capable of...


EOS 5D III, EOS 7D,EOS Rebel T4i, Canon 70-200 f/2.8 IS II, Canon 24-105L, Canon 18-135 IS STM, 1.4x TC III, 2.0x TC III, Σ 50mm f/1.4, Σ 17-50 OS, Σ 70-200 OS, Σ 50-500 OS, Σ 1.4x TC, Σ 2.0x TC, 580EXII(3), Canon SX-40, Canon S100
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Invertalon
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Dec 26, 2012 21:54 |  #25

smorter wrote in post #15409913 (external link)
It's not a calibration issue, I'm talking about softness - calibration is irrelevant when a lens is stopped down and manually focused

I have owned two copies of this lens and hand picked the best one. Even it is not ad good as something like a Tokina 12-24 stopped down (mounted on FF)

Appears you have had bad luck... My 24-105 blows away the Tokina 12-24 I had, no contest.

*shrug* :D


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wombatHorror
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Dec 26, 2012 23:21 |  #26

2slo wrote in post #15408931 (external link)
Disagree. Your copy maybe, but not the lens in general.

I tried three, they were sharp but not the match for the sharpest lenses. Not one of the sharpest L lenses by any means. Even center frame, stopped down a little none matched my tamron 28-75 (or now 24-70 II) or 70-200 f/4 IS or 70-200 2.8 non-IS or 70-300L or 100L or 135 or 300 2.8 or tamron 17-50 or 50 1.4 or 24 1.4 II or etc.




  
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2cruise
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Dec 27, 2012 04:07 as a reply to  @ wombatHorror's post |  #27

I rented one last summer and as my first L experience it was a bit of a letdown. I like the range but the sharpness turned me off.


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Photogaz
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Dec 27, 2012 05:25 |  #28

Capn Fishy wrote in post #15408016 (external link)
=Cap'n Fishy;15408016]A few shots taken recently that gave me the impression there is an increased level of sharpness from my 24-105 after I moved it to the 5DIII. As mentioned above, this is after comparing it to the differences in my other lenses after the same move. Of course it may just be that my copy of the 24-105 and my copy of the 5DIII are a good match, QC limits-wise...

They look very good to me. It also could be the 5D III DLO in play too. How do you process your shots?


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cherrymoon
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Dec 27, 2012 06:05 |  #29

Another help for this 24-105L. It's death is programmed with the arrival of 24-70/4IS. But mine is really a good lens. Sharpness is one of it's best quality, allready @ f4. Of course the 85L and 135L have better sharpness (not so much) but those monstruous pieces of glass are doing f2 and more. My 70-200f4IS has the same sharpness level.

f4, IS, range make it reliable and trusty for all kind of shooting. When my other lenses are tricky to use, I know that I'll have a better shot with this one.

I only wish it is f2.8 but f4@105mm(+IS) is compensating this.


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Cap'n ­ Fishy
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Dec 27, 2012 09:59 |  #30

Photogaz wrote in post #15411740 (external link)
How do you process your shots?

I use ACR. Sharpening is post resizing, using Power Retouche.

Col


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24-105 Sharpness
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