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Thread started 26 Jan 2013 (Saturday) 01:19
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Canon EF 24-70mm f/4L IS

 
AlexTakesPhotos
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Feb 20, 2013 09:13 |  #16

anybody else order this lens? i placed my order last night. should be here sometime next week.


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gavcam
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Feb 20, 2013 14:03 |  #17

I have ordered one but still waiting over 3 weeks now keep getting the same old excuses, Chinese New year and all that.

There dose not seem to be alot of people getting this lens, it is going to be my walk arround lens or if I can only take one lens it will be this one instead of a prime ( probably )


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Fozzie66
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Mar 03, 2013 01:40 as a reply to  @ gavcam's post |  #18

A few from today of my daughter and niece.

IMAGE: http://farm9.staticflickr.com/8089/8522748975_114aef2d55_c.jpg
IMAGE LINK: http://www.flickr.com/​photos/fozzie66/852274​8975/  (external link) IMG_2301 (external link) by fozzie66 (external link), on Flickr

IMAGE: http://farm9.staticflickr.com/8252/8523889834_66c200329b_c.jpg
IMAGE LINK: http://www.flickr.com/​photos/fozzie66/852388​9834/  (external link) IMG_2231 (external link) by fozzie66 (external link), on Flickr

IMAGE: http://farm9.staticflickr.com/8089/8523874536_04d21dfc2a_c.jpg
IMAGE LINK: http://www.flickr.com/​photos/fozzie66/852387​4536/  (external link) IMG_2263 (external link) by fozzie66 (external link), on Flickr

-Adrian 6D | EF 24-70mm F/4L IS USM | 50mm F/1.2L
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samsen
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Mar 03, 2013 01:42 |  #19

Like the first image.


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Bianchi
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Mar 04, 2013 01:59 |  #20

So hows this lens different from the 24-105 F4 Lis other than the macro ability.


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haliapsychologika
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Mar 04, 2013 02:06 as a reply to  @ Bianchi's post |  #21

Photozone just reviewed this lens...the results got me even more confused...
http://www.photozone.d​e/canon_eos_ff/798-canon2470f4 (external link)




  
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cwg
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Mar 04, 2013 04:28 |  #22

I just speed-read the photozone article and I believe they downgraded their ratings of the lens because of focus shifting when aperture is changed. I'm not sure how that's that big of a deal for stills since you normally autofocus after changing aperture. It's terrible for video if you're doing an iris pull, but this isn't a cinema lens. I suppose in macro mode or on a tripod though it could be a pain in the ass.


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Sirrith
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Mar 10, 2013 22:17 |  #23

cwg wrote in post #15674399 (external link)
I just speed-read the photozone article and I believe they downgraded their ratings of the lens because of focus shifting when aperture is changed. I'm not sure how that's that big of a deal for stills since you normally autofocus after changing aperture. It's terrible for video if you're doing an iris pull, but this isn't a cinema lens. I suppose in macro mode or on a tripod though it could be a pain in the ass.

You might change aperture on the camera before AF, but the lens isn't stopped down until you actually press the shutter button all the way, which is after AF. That is why focus shifting matters.


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Fozzie66
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Mar 11, 2013 11:43 as a reply to  @ Sirrith's post |  #24

One from yesterday

IMAGE: http://farm9.staticflickr.com/8110/8547875654_daefa54c35_c.jpg
IMAGE LINK: http://www.flickr.com/​photos/fozzie66/854787​5654/  (external link)

-Adrian 6D | EF 24-70mm F/4L IS USM | 50mm F/1.2L
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lsquare
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Mar 12, 2013 02:58 |  #25

Sirrith wrote in post #15700477 (external link)
You might change aperture on the camera before AF, but the lens isn't stopped down until you actually press the shutter button all the way, which is after AF. That is why focus shifting matters.

I still don't get what the issue is? So let's say I change the aperture from f/5.6 to f/8. I normally press the shutter half-way to AF and see how things will look before fully pressing things down. How will the focus shift effect me? Btw, I don't shoot videos. I'm still struggling to understand how this will negatively impact me.




  
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Sirrith
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Mar 12, 2013 03:05 |  #26

lsquare wrote in post #15705357 (external link)
I still don't get what the issue is? So let's say I change the aperture from f/5.6 to f/8. I normally press the shutter half-way to AF and see how things will look before fully pressing things down. How will the focus shift effect me? Btw, I don't shoot videos. I'm still struggling to understand how this will negatively impact me.

When you AF, the camera does not stop down, so what you see is the lens focused wide open. If you then take a photo, the lens stops down, the focus shifts, and then the shutter opens and closes and you have an OOF shot. That is why it affects you.
The process is like this:
set aperture on camera ----> half press shutter button ----> focus ----> fully press shutter button ----> aperture closes down and focus shift happens ----> shutter opens ----> shutter closes


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NickPerkins
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Mar 12, 2013 09:39 |  #27

Lovin the processing done.




  
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kobeson
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Mar 12, 2013 22:40 |  #28

Sirrith wrote in post #15705366 (external link)
When you AF, the camera does not stop down, so what you see is the lens focused wide open. If you then take a photo, the lens stops down, the focus shifts, and then the shutter opens and closes and you have an OOF shot. That is why it affects you.
The process is like this:
set aperture on camera ----> half press shutter button ----> focus ----> fully press shutter button ----> aperture closes down and focus shift happens ----> shutter opens ----> shutter closes

Great explanation. So Does this mean every single lens released has this issue? Is this something that will be fixed by Canon for future batches? Can it be remedied by a Canon repair?


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Fozzie66
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Mar 12, 2013 23:26 |  #29

NickPerkins wrote in post #15706200 (external link)
Lovin the processing done.

Thank you


-Adrian 6D | EF 24-70mm F/4L IS USM | 50mm F/1.2L
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Sirrith
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Mar 13, 2013 00:45 |  #30

kobeson wrote in post #15709074 (external link)
Great explanation. So Does this mean every single lens released has this issue? Is this something that will be fixed by Canon for future batches? Can it be remedied by a Canon repair?

I have no idea about that. I'm just explaining focus shift because someone mentioned that photozone's copies had the problem but didn't seem to understand why it was a problem.


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Canon EF 24-70mm f/4L IS
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