I think we need an automatic button to click everybody time this suggestion of making dedicated teles for APS-C is posted.Sigh. Because physics. Wide and standard lens designs are limited by the image circle diameter, telephoto designs are not. There is no point in a telephoto lens ‘for crop cameras’ since such a lens would work fine on FF. That’s why there are no such lenses.
Look at the Oly/OM 150-400mm, for example. It’s for m4/3 (2x crop) but it’s about the same size as the Canon 100-500 (and if OM made a FF camera, the lens would work on it).
As for wide lenses not making money, I really don’t get why some people seem to think they know better than Canon what lenses people will buy. I mean, Canon has led the ILC market for over two decades and dominates it today…but you know more about what lenses they need to make? LOL. You get to decide what lenses you want to buy, but Canon doesn’t care what you personally want.
The way technology trends come and go, such as film cameras having a comeback and vinyl music selling like crazy, it'll probably just take a few influencer or YouTube who state "they absolutely love the old, little M-cameras made back way then..." and boom: the m-system will be backOr, hear me out, Canon could revive what was one of the best compact systems of all time--the M series. Of course that ship has sailed, but the way that company handled that system was such a lost opportunity.
I fully agree!I wouldn’t like to say, but what I can say is that the optical performance of the RF 28/2.8 is really quite impressive, with superb clarity. So called ‘micro contrast’ doesn’t seem to suffer from the resin elements, there’s not a lot not to like.
It looks something like the spherical aberration correction lenses that used to be found in large refractor (lens) telescopes.Pretty amazing aspherical shape for that final element on the 24-45 mm f/1.4 L.

Exactly!Lenses these days are a two-part system: the physical lens, and the software/profiles needed for mandatory corrections. It seems to me that for manufacturers, the value is in the lens and not the software or profiles. If anything, giving away the profiles adds value. Having companies like dxo retro-engineer the corrections seems counterproductive to me.
Of course...we can all wish for lenses and hope that Canon makes them. But there's a significant difference between hoping for a lens and claiming that Canon not making the lens one hopes for will have negative consequences for their business. The former is quite reasonable, the latter (which is what @swingman did) is asinine.Well, I'm not the author of that comment but come on: Each of us has HIS preferred lenses (and of course Canon knows best which lenses will give them the most profit). And we are most interested to get the lenses we are dreaming of. Me too!![]()
The ray diagram is going to 'stop' at the edges of the diagrammatic 'sensor' by convention, even though that's technically the image plane and is thus a 2D surface.On the schematic of the 24-45, the transmission path of the edge rays do not go through the entire width of the central elements. Is this the constraint of the image circle at the focus plane?
I can intuitively visualize in a telephoto lens with a narrower angle-of-view the edge transmission path taking up more of the width of the central elements.
Well, I'm not the author of that comment but come on: Each of us has HIS preferred lenses (and of course Canon knows best which lenses will give them the most profit). And we are most interested to get the lenses we are dreaming of. Me too!...
As for wide lenses not making money, I really don’t get why some people seem to think they know better than Canon what lenses people will buy. I mean, Canon has led the ILC market for over two decades and dominates it today…but you know more about what lenses they need to make? LOL. You get to decide what lenses you want to buy, but Canon doesn’t care what you personally want.
On the schematic of the 24-45, the transmission path of the edge rays do not go through the entire width of the central elements. Is this the constraint of the image circle at the focus plane?...Wide and standard lens designs are limited by the image circle diameter, telephoto designs are not...
I don't know if this word is still even used, but that's just not hipster enough! Too much digital garbage, don't you long for the Canon-flavoured ANALOGUE XPERIENCE? Don't mind the tiny sensor put in there just to call that a cameraI just flip up the rear LCD screen on my G7X III to get a waist-level finder. It's bright enough.
Sigh. Because physics. Wide and standard lens designs are limited by the image circle diameter, telephoto designs are not. There is no point in a telephoto lens ‘for crop cameras’ since such a lens would work fine on FF. That’s why there are no such lenses.Why can’t we have some mid range tele for crop cameras. Keep doing more and more wide lenses is not going to make more money.
I wouldn’t like to say, but what I can say is that the optical performance of the RF 28/2.8 is really quite impressive, with superb clarity. So called ‘micro contrast’ doesn’t seem to suffer from the resin elements, there’s not a lot not to like.Made of optical glass or optical plastics like the one on the RF 28mm f/2,8?
Canon files thousands of patent applications per year, they have been in the top ten companies in terms of that for over four decades. They release <10 lenses per year. So very unlikely to be a ‘distraction’, as you suggest.Concerning all the patent applications: Is it possible that Canon want's to distract a little bit from the potential new lenses, so that they created some 'nonsense' patents to 'hide' the potential new lenses in this larger amount of patents?
Theoretically, sadly!Yes, you got it. the light bounces in between the two elements and magic happens.