The 200-400 is already a great lens with great AF. I'm not sure how they can make a product between that and the 100-400.
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ethanz said:The 200-400 is already a great lens with great AF. I'm not sure how they can make a product between that and the 100-400.
jolyonralph said:> Canon does not sell f/6.3 EF (or EF-S lenses).
However three of their EF-M lenses do go to f/6.3 on the long end.
So, perhaps the mirrorless 6D replacement that is being rumoured might have a new lens mount too
brad-man said:jolyonralph said:> Canon does not sell f/6.3 EF (or EF-S lenses).
However three of their EF-M lenses do go to f/6.3 on the long end.
So, perhaps the mirrorless 6D replacement that is being rumoured might have a new lens mount too
Would someone be kind enough to point me to the rumor on this site of the Canon FF ILC people keep talking about. I recall a blip of a rumor about a fixed lens mirrorless offering being contemplated by Canon, but nothing more. A little help?
And who's to say this new lens will be "affordable"? Realistically, if it was 200-600, it's going to cost more than the 100-400, obviously. And if it does have any unique feature that the third-party lenses of that type lack, then that usually results in a lens costing at least twice what its next-closest contemporary is.Canon Rumors said:, as Canon’s longest “affordable” zoom is the EF 100-400mm f/4.5-5.6L IS II.</p>
goldenhusky said:brad-man said:jolyonralph said:> Canon does not sell f/6.3 EF (or EF-S lenses).
However three of their EF-M lenses do go to f/6.3 on the long end.
So, perhaps the mirrorless 6D replacement that is being rumoured might have a new lens mount too
Would someone be kind enough to point me to the rumor on this site of the Canon FF ILC people keep talking about. I recall a blip of a rumor about a fixed lens mirrorless offering being contemplated by Canon, but nothing more. A little help?
http://www.canonrumors.com/canon-full-frame-mirrorless-cr2/
http://www.canonrumors.com/forum/index.php?topic=31147.0
http://www.canonrumors.com/forum/index.php?topic=31750.0
related but not exactly what you might be looking for
http://www.canonrumors.com/forum/index.php?topic=31534.0
http://www.canonrumors.com/forum/index.php?topic=31551.0
AFAIK so far there is no credible information on the Full Frame mirrorless from Canon.
privatebydesign said:In my opinion Canon will never make an EF lens slower than f5.6, for the sake of this discussion about a budget tele zoom that means a 500mm limit.
No a quality 150-600 f5.6 is already available from Canon and has been for over 20 years, even now used ones cost over $5,000. An EF version would be substantially more in size and cost than a Sigma 120-300!
RGF said:privatebydesign said:In my opinion Canon will never make an EF lens slower than f5.6, for the sake of this discussion about a budget tele zoom that means a 500mm limit.
No a quality 150-600 f5.6 is already available from Canon and has been for over 20 years, even now used ones cost over $5,000. An EF version would be substantially more in size and cost than a Sigma 120-300!
Not sure about the F5.6 limit. Can see F6.3.
Don Haines said:So..... if Sigma can make a F6.3 lens that focuses on a Canon body that needs F5.6, and Tamron can make a F6.3 lens that focuses on a Canon body that needs F5.6, does anyone on this forum really think that Canon can not do the same? The argument that Canon will never make a DSLR lens slower than F5.6 is seriously flawed!
There already are a couple of newer Canon lenses which don't fully play well with some older bodies. Modern IS and STM don't work quite right with anything made before the original 5D, pretty much.jolyonralph said:Because to make this work is pretty much a dirty hack - ie the lens reports itself as f/5.6 while focusing and only reports its correct aperture when taking the shot. This may work on current cameras but will this hack work on future EOS cameras? Will it even work across the whole range of EOS cameras now?
Third parties can do whatever they can get away with, but Canon at least has to stick to their standards.
They won't release an EF lens that won't work properly on all previous EOS cameras.
I wouldn't expect the T-stop values to be particularly close to the f-stop values.aceflibble said:It's better than what Canon do where the f-stop of a lens almost never matches the t-stop at all. You've got Canon still selling f/1.2 and f/1.4 glass which is actually t/1.8 and t/2, most of their constant-aperture zooms aren't actually quite constant aperture (nor is their t-stop anywhere close to the f-stop, either)
Don't pretend Canon has "standards" when they fudge everything just as much as every other company. There isn't a single upright and honest manufacturer out there; that's why they have marketing departments.
aceflibble said:There already are a couple of newer Canon lenses which don't fully play well with some older bodies. Modern IS and STM don't work quite right with anything made before the original 5D, pretty much.
aceflibble said:There already are a couple of newer Canon lenses which don't fully play well with some older bodies. Modern IS and STM don't work quite right with anything made before the original 5D, pretty much.jolyonralph said:Because to make this work is pretty much a dirty hack - ie the lens reports itself as f/5.6 while focusing and only reports its correct aperture when taking the shot. This may work on current cameras but will this hack work on future EOS cameras? Will it even work across the whole range of EOS cameras now?
Third parties can do whatever they can get away with, but Canon at least has to stick to their standards.
They won't release an EF lens that won't work properly on all previous EOS cameras.
And what the third-parties do is not so much a "dirty hack" as much as it is a smart and honest way to make a slow lens work. It's better than what Canon do where the f-stop of a lens almost never matches the t-stop at all. Yes, Sigma tell the camera it's at f/5.6 when really it's a f/6.3, but it works and Sigma aren't claiming it's an f/5.6 lens. Meanwhile you've got Canon still selling f/1.2 and f/1.4 glass which is actually t/1.8 and t/2, most of their constant-aperture zooms aren't actually quite constant aperture (nor is their t-stop anywhere close to the f-stop, either), and they're essentially blocking certain lenses from autofocusing with some bodies even though a third-party manufacturer has proven it can be made to work.
And if you're going to bring up "dirty tricks", how about you take a look at how far Canon's actual ISO ratings are from their stated values.
Don't pretend Canon has "standards" when they fudge everything just as much as every other company. There isn't a single upright and honest manufacturer out there; that's why they have marketing departments.