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Locked
Latest Canon lenses have an ultra-precision AF mode but only some bodies take ad
- Canon Lenses
- 0 Replies
surprised this hasn't been posted here yet but:
http://www.lensrentals.com/blog/2012/07/autofocus-reality-part-3a-canon-lenses
Very interesting results!
Any lens older than the 70-200 2.8 IS II did much worse with phase AF consistency than with liveview AF on both bodies, 5D2 and 5D3, no surprise, already well known and expected.
Regardless of lens age they all did much worse with phase precision than contrast focus precision on the 5D2.
But with a 5D3, all of the new lenses, on that body only, focus much more precisely!
The 70-200 2.8 IS II was sort of in between somewhat better but not like with the newest lenses.
They found that the new 24mm 2.8 IS, 28mm 2.8 IS, 300 2.8 IS II and 70-300mm IS L all focused much more precisely when used with the new 5D3 (and likely 1DX) AF system than on the older 5D2 and that the 70-200 2.8 IS II possibly focused somewhat better (although they were not sure in this case). They said those few lenses actually focused almost as precisely with phase AF as with contrast liveview AF. The old 300 2.8 IS did not.
So apparently the new AF system can hook into some secret stuff with the newest lens designs.
I wonder if that means that third party lenses are not likely to be able to match the same AF precision of the new Canon lenses on the 5D3/1DX, at least not for some time, since they won't have the special whatever it is that makes the new Canon lenses focus extra well with the new AF system.
part 3B (http://www.lensrentals.com/blog/2012/08/autofocus-reality-part-3b-canon-cameras) has now been added to the part 3A stuff I talked about above.
Basically yeah only the 5D3 and 1DX have the new ultra precision AF unit although the 1D4 isn't that shabby.
7D, as I've long said, has a LOT more in common with the cheaper AF units than the 1 series ones, it's more the xxD just with more points and some more speed added and more options than high quality focusing units and sensor and most updated code
the newest lenses have high precision rotation readers that allow for nice closed loop AF, without both the new high precision readers in lenses and the new high precision detectors (1DX,5D3 and to a lesser extent 1D4) you won't get the ultra precision
i think you also need to use the center point or at least the center column other than very top and bottom points of that.
Nice that I swapped to both 70-300L and 5D3.
He will test Nikon next. That will be interesting.
http://www.lensrentals.com/blog/2012/07/autofocus-reality-part-3a-canon-lenses
Very interesting results!
Any lens older than the 70-200 2.8 IS II did much worse with phase AF consistency than with liveview AF on both bodies, 5D2 and 5D3, no surprise, already well known and expected.
Regardless of lens age they all did much worse with phase precision than contrast focus precision on the 5D2.
But with a 5D3, all of the new lenses, on that body only, focus much more precisely!
The 70-200 2.8 IS II was sort of in between somewhat better but not like with the newest lenses.
They found that the new 24mm 2.8 IS, 28mm 2.8 IS, 300 2.8 IS II and 70-300mm IS L all focused much more precisely when used with the new 5D3 (and likely 1DX) AF system than on the older 5D2 and that the 70-200 2.8 IS II possibly focused somewhat better (although they were not sure in this case). They said those few lenses actually focused almost as precisely with phase AF as with contrast liveview AF. The old 300 2.8 IS did not.
So apparently the new AF system can hook into some secret stuff with the newest lens designs.
I wonder if that means that third party lenses are not likely to be able to match the same AF precision of the new Canon lenses on the 5D3/1DX, at least not for some time, since they won't have the special whatever it is that makes the new Canon lenses focus extra well with the new AF system.
part 3B (http://www.lensrentals.com/blog/2012/08/autofocus-reality-part-3b-canon-cameras) has now been added to the part 3A stuff I talked about above.
Basically yeah only the 5D3 and 1DX have the new ultra precision AF unit although the 1D4 isn't that shabby.
7D, as I've long said, has a LOT more in common with the cheaper AF units than the 1 series ones, it's more the xxD just with more points and some more speed added and more options than high quality focusing units and sensor and most updated code
the newest lenses have high precision rotation readers that allow for nice closed loop AF, without both the new high precision readers in lenses and the new high precision detectors (1DX,5D3 and to a lesser extent 1D4) you won't get the ultra precision
i think you also need to use the center point or at least the center column other than very top and bottom points of that.
Nice that I swapped to both 70-300L and 5D3.
He will test Nikon next. That will be interesting.
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Locked
5D3+1DX (and partly 1D4) enable ultra-precision AF with newest Canon lenses
- EOS DSLR
- 1 Replies
surprised this hasn't been posted here yet but:
http://www.lensrentals.com/blog/2012/07/autofocus-reality-part-3a-canon-lenses
Very interesting results!
Any lens older than the 70-200 2.8 IS II did much worse with phase AF consistency than with liveview AF on both bodies, 5D2 and 5D3, no surprise, already well known and expected.
Regardless of lens age they all did much worse with phase precision than contrast focus precision on the 5D2.
But with a 5D3, all of the new lenses, on that body only, focus much more precisely!
The 70-200 2.8 IS II was sort of in between somewhat better but not like with the newest lenses.
They found that the new 24mm 2.8 IS, 28mm 2.8 IS, 300 2.8 IS II and 70-300mm IS L all focused much more precisely when used with the new 5D3 (and likely 1DX) AF system than on the older 5D2 and that the 70-200 2.8 IS II possibly focused somewhat better (although they were not sure in this case). They said those few lenses actually focused almost as precisely with phase AF as with contrast liveview AF. The old 300 2.8 IS did not.
So apparently the new AF system can hook into some secret stuff with the newest lens designs.
I wonder if that means that third party lenses are not likely to be able to match the same AF precision of the new Canon lenses on the 5D3/1DX, at least not for some time, since they won't have the special whatever it is that makes the new Canon lenses focus extra well with the new AF system.
part 3B (http://www.lensrentals.com/blog/2012/08/autofocus-reality-part-3b-canon-cameras) has now been added to the part 3A stuff I talked about above.
Basically yeah only the 5D3 and 1DX have the new ultra precision AF unit although the 1D4 isn't that shabby.
7D, as I've long said, has a LOT more in common with the cheaper AF units than the 1 series ones, it's more the xxD just with more points and some more speed added and more options than high quality focusing units and sensor and most updated code
the newest lenses have high precision rotation readers that allow for nice closed loop AF, without both the new high precision readers in lenses and the new high precision detectors (1DX,5D3 and to a lesser extent 1D4) you won't get the ultra precision
i think you also need to use the center point or at least the center column other than very top and bottom points of that.
Nice that I swapped to both 70-300L and 5D3.
http://www.lensrentals.com/blog/2012/07/autofocus-reality-part-3a-canon-lenses
Very interesting results!
Any lens older than the 70-200 2.8 IS II did much worse with phase AF consistency than with liveview AF on both bodies, 5D2 and 5D3, no surprise, already well known and expected.
Regardless of lens age they all did much worse with phase precision than contrast focus precision on the 5D2.
But with a 5D3, all of the new lenses, on that body only, focus much more precisely!
The 70-200 2.8 IS II was sort of in between somewhat better but not like with the newest lenses.
They found that the new 24mm 2.8 IS, 28mm 2.8 IS, 300 2.8 IS II and 70-300mm IS L all focused much more precisely when used with the new 5D3 (and likely 1DX) AF system than on the older 5D2 and that the 70-200 2.8 IS II possibly focused somewhat better (although they were not sure in this case). They said those few lenses actually focused almost as precisely with phase AF as with contrast liveview AF. The old 300 2.8 IS did not.
So apparently the new AF system can hook into some secret stuff with the newest lens designs.
I wonder if that means that third party lenses are not likely to be able to match the same AF precision of the new Canon lenses on the 5D3/1DX, at least not for some time, since they won't have the special whatever it is that makes the new Canon lenses focus extra well with the new AF system.
part 3B (http://www.lensrentals.com/blog/2012/08/autofocus-reality-part-3b-canon-cameras) has now been added to the part 3A stuff I talked about above.
Basically yeah only the 5D3 and 1DX have the new ultra precision AF unit although the 1D4 isn't that shabby.
7D, as I've long said, has a LOT more in common with the cheaper AF units than the 1 series ones, it's more the xxD just with more points and some more speed added and more options than high quality focusing units and sensor and most updated code
the newest lenses have high precision rotation readers that allow for nice closed loop AF, without both the new high precision readers in lenses and the new high precision detectors (1DX,5D3 and to a lesser extent 1D4) you won't get the ultra precision
i think you also need to use the center point or at least the center column other than very top and bottom points of that.
Nice that I swapped to both 70-300L and 5D3.
After the Olympics
- By Bombsight
- Site Information
- 1 Replies
What are the chances of gear from the Olympics being sold as new?
Seems like a lot of gear to just be "discounted" as "refurbished".
Who uses all of that gear afterwards? ???
Warrantees are nice and all but, .... I'm just glad I have my 1DX now!
Seems like a lot of gear to just be "discounted" as "refurbished".
Who uses all of that gear afterwards? ???
Warrantees are nice and all but, .... I'm just glad I have my 1DX now!
Industrial fun photography
Share your abstract and senseless industrial factory-inside photos. I'll start with these:
Industrial fun by marekjoz, on Flickr
Industrial fun by marekjoz, on Flickr
Industrial fun by marekjoz, on Flickr
Industrial fun by marekjoz, on Flickr
Industrial fun by marekjoz, on Flickr
Industrial fun by marekjoz, on Flickr
Remember it's posted in "abstract" section
Industrial fun by marekjoz, on Flickr
Industrial fun by marekjoz, on Flickr
Industrial fun by marekjoz, on Flickr
Industrial fun by marekjoz, on Flickr
Industrial fun by marekjoz, on Flickr
Industrial fun by marekjoz, on Flickr
Remember it's posted in "abstract" section
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Locked
1DS 3 losing focus during One Shot lock
- By Louis
- EOS Bodies
- 4 Replies
Hello All,
and sorry to bother you all with such old problems now you are enjoying all your new latest models I have a question, I recently bought a 1DS 3 that I am extremely happy about, apart from a small problem, I noticed that when I am using the centre point AF, and one One Shot, the camera will sometimes, lose the lock of focus even though I am holding the trigger down, so I would focas on something, then recompose and the camera would then focas on the middle of where I have just composed too, even though my trigger had remained the same, this does not happen all the time, its like the camera was telling me that it wasnt happy with where it was focussed and then redid it, but by the time that happened I had moved, I rand Canon repair and they said, are you sure your not in AI Servo and I am sure, they said its £150 to get a full service,
Have any of you ever heard of this problem do you think there is some setting I have that is doing this?
Thanks for your help, once I get this sorted I will be extremely happy
Louis
and sorry to bother you all with such old problems now you are enjoying all your new latest models
I have a question, I recently bought a 1DS 3 that I am extremely happy about, apart from a small problem, I noticed that when I am using the centre point AF, and one One Shot, the camera will sometimes, lose the lock of focus even though I am holding the trigger down, so I would focas on something, then recompose and the camera would then focas on the middle of where I have just composed too, even though my trigger had remained the same, this does not happen all the time, its like the camera was telling me that it wasnt happy with where it was focussed and then redid it, but by the time that happened I had moved, I rand Canon repair and they said, are you sure your not in AI Servo and I am sure, they said its £150 to get a full service, Have any of you ever heard of this problem do you think there is some setting I have that is doing this?
Thanks for your help, once I get this sorted I will be extremely happy
Louis
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Locked
Canon one series shutter life
Hey everyone, I am new to posting on the CR forum, but have been following it awhile now.
This is a question/rant post about my Canon 1ds mark3. I bought the camera in 2008 and it is indeed a great camera, with high resolution, good AF and the like. The problem that I have with it is that the shutter seems to have died on me. And that is after about 20k pics. And that is what pisses me of, Canon states that the shutter on a one series is good for 300k+, but this is less than 10%.
I am from Slovenia, where Canon has a poor presence in terms of service and all, so this will probably cost me around 300EUR(=370USD), as the guarantee period is over.
I guess I am writing this post to vent a bit and to ask if anyone has had similar problems with a one series camera and if you have any ideas what to do(instead of paying the 300eur).
Any ideas EU users?
Thanks
Tomaz
This is a question/rant post about my Canon 1ds mark3. I bought the camera in 2008 and it is indeed a great camera, with high resolution, good AF and the like. The problem that I have with it is that the shutter seems to have died on me. And that is after about 20k pics. And that is what pisses me of, Canon states that the shutter on a one series is good for 300k+, but this is less than 10%.
I am from Slovenia, where Canon has a poor presence in terms of service and all, so this will probably cost me around 300EUR(=370USD), as the guarantee period is over.
I guess I am writing this post to vent a bit and to ask if anyone has had similar problems with a one series camera and if you have any ideas what to do(instead of paying the 300eur).
Any ideas EU users?
Thanks
Tomaz
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Locked
New Canon Flash This Fall? [CR2]
- By Canon Rumors
- Speedlites, Printers, Accessories
- 16 Replies
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Locked
What happenned to CCE camera bags?
- Third Party Lenses
- 1 Replies
Hello all,
Bit of a random question but a number of years ago now I recall there being a company called CCE (Stood for Camere Care Equipment possibly) that made camera bags and cases etc, I can find no mention of them on the net so obviously they went bust or became something else but does anybody recall what happenned to them and when?
Many thanks!
Bit of a random question but a number of years ago now I recall there being a company called CCE (Stood for Camere Care Equipment possibly) that made camera bags and cases etc, I can find no mention of them on the net so obviously they went bust or became something else but does anybody recall what happenned to them and when?
Many thanks!
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