Ok, I've been thinking about this for a while but imagine that you could start from a blank sheet to design a system what do you think is necessary & at what level?
I suggest that we do it for APS-C crop sensors first & then if that is successful FF later.
I imagine 4 levels (let's call them "average punter", "hobby", "serious enthusiast", "professional & exotics" for now) but I'm open to arguments for more/fewer levels & different positioning. I also expect a certain amount of boundary blurring/overlap & difference of opinion as some people will tend towards normal & wide & some towards the tele end according to their subject preference.
Suggested products have to be in believable pricing territory (as evidenced by what is currently available on the market) - unfortunately no professional 600/4s for £200
- & I suspect that it's probably simpler to ignore the question of IS or we'll get bogged down in arguments about in-lens v in-body 
e.g. for "average punter" I reckon that you could cover it with kit level ~18-55mm 3.5-5.6, 55-200mm 4-5.6, 70/75-300mm 4.5-5.6 & a superzoom e.g 18-200/250mm 3.5 - 5.6/6.3.
"hobby" is going to maybe add something like a 50/1.8 (although of course on APS-C that's somewhat longer than a standard & becomes more of a portrait lens), something in the 30mm f1.8/2/f2.8 region as a standard to match the human eye's view & so forth.
etc. etc.
So, let's see what your thoughts on a perfect, commercially sensible lens system would be
Also, feel free to suggest if you want to in what order that you think products should be introduced.
I suggest that we do it for APS-C crop sensors first & then if that is successful FF later.
I imagine 4 levels (let's call them "average punter", "hobby", "serious enthusiast", "professional & exotics" for now) but I'm open to arguments for more/fewer levels & different positioning. I also expect a certain amount of boundary blurring/overlap & difference of opinion as some people will tend towards normal & wide & some towards the tele end according to their subject preference.
Suggested products have to be in believable pricing territory (as evidenced by what is currently available on the market) - unfortunately no professional 600/4s for £200
- & I suspect that it's probably simpler to ignore the question of IS or we'll get bogged down in arguments about in-lens v in-body e.g. for "average punter" I reckon that you could cover it with kit level ~18-55mm 3.5-5.6, 55-200mm 4-5.6, 70/75-300mm 4.5-5.6 & a superzoom e.g 18-200/250mm 3.5 - 5.6/6.3.
"hobby" is going to maybe add something like a 50/1.8 (although of course on APS-C that's somewhat longer than a standard & becomes more of a portrait lens), something in the 30mm f1.8/2/f2.8 region as a standard to match the human eye's view & so forth.
etc. etc.
So, let's see what your thoughts on a perfect, commercially sensible lens system would be
Also, feel free to suggest if you want to in what order that you think products should be introduced.
, im not sure as of yet, the previous 70-200's iv used obviously require more skill being non IS and while can get amazing results they take a little more thought time, i may sell the canon but for a 'point and shoot'/take up a mountain zoom, its size weight and image quality are awesome, it has slightly more reach, ill see how I go, the sigma is to help in doors , weddings concerts etc where the canon lets itself down being f5.6.
