Originally posted by Ash Add my +1 to that.
We all should indeed enjoy what is available rather than coveting or hoping for something not likely to come soon.
Explain?
Generally speaking...
'Better' glass doesn't cost more?
Faster glass isn't larger or doesn't weigh more?
Yes, it doesn't strictly *have* to follow this way (like the FA Limiteds) but photographers have to be prepared to spend more for lenses that are of higher quality.
Caveats of the DA 40 XS, DA 35/2.4 and DA 50/1.8 are more the exception than the rule.
And once you get to FF compatible glass, the cost does go up (like the FA Limiteds, Tamron 70-200, etc.)
Tamron 70-200 f/2.8 compared to what? a 50-135 f/2.8 that costs more? a 50-135 f/2 that doesn't exist?
If you want to take picture 'A', a hypothetical lens for a 36MP FF camera will at most cost exactly the same as the same lens on a 16MP APS-C camera. You just crop and use the same lens. I've chosen the MP so you can't really argue, but in practice, in my experience, it's the same for 24MP FF and 16MP APS-C.
On the wide scale, the full-frame lenses are much cheaper for the same functionality... look at 24-35mm f/1.4 costs and compare them to costs of 35-50mm f/1.4. Look at 24-75ish F/4 zoom lenses and compare them to 16-50ish F/2.8 lenses.
The FF lenses in these comparisons are always at least slightly faster, and are almost always some combination of a wider zoom range, smaller lens, and cheaper cost.
I've done this comparison at least five times on this website alone, if you want to search my name.