Don Haines said:
...
Cameras are expendable. Lenses are an investment....
I disagree completely.
In real terms, a lens with a static price depreciates with inflation over time. For example, if you buy a lens for $1000 and inflation is running at 3%, unless you sell the lens 3 years later for $1100, you've lost money. If the lens (new) still costs $1000 in 3 years time, that represents static pricing that has a value that decreases with inflation. If a lens starts out at $1000 and in 3 years is still $1000 in a market that has a CPI of 3% then in real terms the price of the lens has dropped to $912.
Would anyone buy a 17-40/f4L now?
Did the value of the 17-40/f4L go up or down after the release of the 16-35/f4L IS?
Then there is 3rd party.
Tamron and Sigma are applying incredible pressure on the value of lenses.
Or to put it differently...
If you bought $100,000 worth of Canon lenses today and $100,000 worth of Apple or Google stock, in 3 years, which would represent a net gain? The resale of the Canon lenses or the shares?