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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 03 Jun 2013 (Monday) 15:05
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17-40 any good for MKIII?

 
Canonmannz
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Jun 05, 2013 05:02 |  #31

I find I am using this lens all the time. Certainly a lot more than I intended when I bought it. Maybe it's also due to the fact its an easier lens to enable the camera to fit into my bag.




  
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*Jayrou
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Jun 05, 2013 06:00 as a reply to  @ post 16000336 |  #32

Your 24-105 would do 90% of your Iceland trip.

The land is so vast that an UWA often turns subjects into mere dots on the horizon...:D

last year my widest lens there was 35mm, this year I had a TS-E 24mm which was ample.....quite often I used my 70-200 for landscapes


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Paulowen
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Jun 05, 2013 07:28 |  #33

sploo wrote in post #15999823 (external link)
<TROLLING>At f14 I'd have expected it'd be super soft across the frame due to diffraction</TROLLING> :D (great shot BTW)

This lens has always surprised me with just how sharp it is as long as you use it between 5.6 and f16 it is fine - heck even at f22 the corners are not objectionable!
How do you spot diffraction anyway? Never seen it's effect myself just hear people talking about it?
I reckon its an urban myth ;)

Here's another one from Iceland, same lens but at f13 for 10 seconds.


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MNUplander
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Jun 05, 2013 08:42 |  #34

Pepe Guitarra wrote in post #15999881 (external link)
I have a hard time thinking of someone trying to shoot a landscape with a lens wide open. Isn't at that aperture when the dof is the thinnest? What I learned is that for landscape, you want the thickest dof, thus, a smaller aperture. I had the Rok 14, and it rocks. I have the 17-40, and also rocks. I even have the Canon 20/2.8 and is good, of course, not wide open for landscapes.

Check out a DOF calculator - you can get from very close to your lens to infinity within focus at f2.8 on a wide lens. It's useful for many things including:

-Starscapes (you need to let more light in quickly for these)
-If you want to stop movement in the frame (waves, wind through trees) without increasing ISO
-You want to achieve a certain affect your lens has at it's widest setting (vignetting or something)
-In dark places where tripods are not allowed or feasible (think hiking without a tripod in the evening, museums, churches and other historical buildings) just to name a few.

However, in most cases you're right - it makes more sense to just stop down.


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sawsedge
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Jun 05, 2013 09:16 |  #35

Paulowen wrote in post #16001553 (external link)
This lens has always surprised me with just how sharp it is as long as you use it between 5.6 and f16 it is fine - heck even at f22 the corners are not objectionable!
How do you spot diffraction anyway? Never seen it's effect myself just hear people talking about it?
I reckon its an urban myth ;)

It's not a myth, it just isn't as bad as some make it out to be.


- John

  
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Paulowen
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Jun 05, 2013 12:18 |  #36

sawsedge wrote in post #16001831 (external link)
It's not a myth, it just isn't as bad as some make it out to be.

I appreciate that laboratory testing will show up lens defects but it's just that I've never seen a photograph where I could say "ah there's evidence of diffraction"? I've shot using the 17-40 at f 22 and have been pleased with the results (and I MUST have sharp images) ..... interesting ;)


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crunchie
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Jun 05, 2013 14:56 |  #37

http://www.lensrentals​.com …ercoming-my-fentekaphobia (external link)

In my experience, most lens+camera combinations have similar characteristics - start off soft, sharpen up, and then drop again. 2 observations: the diffraction sharpness drop-off isn't instant, and it's still sharper than wide open. But I've only ever tested about 2 lenses myself :P


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crunchie
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Jun 05, 2013 15:59 |  #38

I keep looking at the pictures here - now I really can't wait for my 17-40 to arrive next week!!


6D, 40D, EOS M, and various lenses

  
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Nonnit
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Jun 05, 2013 16:54 |  #39

*Jayrou wrote in post #16001410 (external link)
Your 24-105 would do 90% of your Iceland trip.

The land is so vast that an UWA often turns subjects into mere dots on the horizon...:D

last year my widest lens there was 35mm, this year I had a TS-E 24mm which was ample.....quite often I used my 70-200 for landscapes

I love my dots in the horizon!!!

I live in Iceland and my style is low and wide - ultrawide

5D MK2 + 17-40 @17mm and f8:

IMAGE: http://farm9.staticflickr.com/8105/8587245558_108758d8d4_c.jpg
IMAGE LINK: http://www.flickr.com/​photos/nonnit/85872455​58/  (external link)

5D MK2 + 17-40 @ 17mm and f11:
IMAGE: http://farm9.staticflickr.com/8230/8601607432_6d80221919_c.jpg
IMAGE LINK: http://www.flickr.com/​photos/nonnit/86016074​32/  (external link)
Skírdagur (external link) by Nonnit (external link), on Flickr

5D MK2 + 17-40 @ 17mm and f16:
IMAGE: http://farm9.staticflickr.com/8098/8598463506_ebd59c32fa_c.jpg
IMAGE LINK: http://www.flickr.com/​photos/nonnit/85984635​06/  (external link)
Reyðarfjörður (external link) by Nonnit (external link), on Flickr
Útsveit (external link) by Nonnit (external link), on Flickr

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sploo
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Jun 05, 2013 16:55 as a reply to  @ crunchie's post |  #40

Diffraction: real, but arguably not that huge an issue unless you're printing really big, stopping down way small, or pixel peeping: http://www.cambridgein​colour.com …ffraction-photography.htm (external link)

It can be very obvious when comparing images at 100% zoom, but obviously that's not particularly relevant to most prints or real viewing.

EDIT: Nonnit's post above (nice shots BTW) appeared while I was typing mine (it was in reference to the group above).


Camera, some lenses, too little time, too little talent

  
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waterrockets
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Jun 05, 2013 17:06 |  #41

Your gear list says 5D3, but your subject line is ambiguous. There is more than one Mark III in the Canon lineup...


1D MkIV | 1D MkIII | 550D w/grip & ML| EF 70-200mm f2.8L| EF 24-105mm f4L IS | Canon EF 100-400mm f/4.5-5.6L IS | Samyang 14mm f/2.8 IF ED UMC | 430EXii | EF 50mm f1.8

  
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light_pilgrim
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Jun 06, 2013 00:03 |  #42

waterrockets wrote in post #16003387 (external link)
Your gear list says 5D3, but your subject line is ambiguous. There is more than one Mark III in the Canon lineup...

Yes, but I was hoping that folks can check my signature if not clear....could be a big effort, but...doable:-)


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RileyNZL
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Jun 06, 2013 02:02 |  #43

How do the third party lenses compare?


Canon 1Dx |Canon 6D|Canon 24-70 F2.8 L MkII|Canon 16-35 F4 L|Sigma 70-200 F2.8 EX OS|Canon 400mm f5.6 L|Sigma 50mm F1.4|Canon 600EX's|Gitzo Explorer Tripod|

  
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*Jayrou
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Jun 06, 2013 03:04 |  #44

Nonnit wrote in post #16003365 (external link)
I love my dots in the horizon!!!

I live in Iceland and my style is low and wide - ultrawide

5D MK2 + 17-40 @17mm and f8:


5D MK2 + 17-40 @ 17mm and f11:

Skírdagur (external link) by Nonnit (external link), on Flickr

5D MK2 + 17-40 @ 17mm and f16:

Reyðarfjörður (external link) by Nonnit (external link), on Flickr
Útsveit (external link) by Nonnit (external link), on Flickr


Nice...:), Im not saying an UWA is a waste of time in Iceland, for me it was not as necessary as I thought it would be, 24 was plenty wide.


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waterrockets
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Jun 06, 2013 09:04 |  #45

light_pilgrim wrote in post #16004416 (external link)
Yes, but I was hoping that folks can check my signature if not clear....could be a big effort, but...doable:-)

They can, but people who have no interest in the 5D3 may waste time clicking through based on the subject. Clear thread subjects are good etiquette, as everyone has their time limits.

Then you also draw in people like me to stir the pot for no good reason.


1D MkIV | 1D MkIII | 550D w/grip & ML| EF 70-200mm f2.8L| EF 24-105mm f4L IS | Canon EF 100-400mm f/4.5-5.6L IS | Samyang 14mm f/2.8 IF ED UMC | 430EXii | EF 50mm f1.8

  
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