Orchid XP v8 wrote:
> Still, the higher model cameras have presumably superior image sensors,
> more sophisticated controls, and so on and so forth. If you've got £7k
> to spend on a mere lense, why not buy the most possible camera to go
> with it?

You presume that, but in my experience what you get are 5 to 10 cameras
in a range that all have the same sensor and image quality but have a
few 'neat' features tacked on each progressive model for more cash. The
base model might shoot at up to 1/2000s or ISO 1600, but jump up in
price and you get higher speeds that most people will not use. The real
high end models do use different sensors than the lower price ones, but
again you have a range of cameras that have the same physical body and
sensor and shutter, with some minor variation in button color, lcd
screen, or options made available to the user. And, in some cases, the
terms of the MPEG license attached to the camera.

That, and the lens is going to last longer than the camera body. A seven
grand lens is going to continue to work when you find that you really
need ISO 3200, or 1/8000s shutter speed, or finally have the money to
upgrade to a full-frame sensor*. Heck, if you stay with the same brand
camera the lens may last longer than the format it was designed for. I
have old Minolta lenses that still work just fine on a new Sony Alpha. A
teleconverter is needed for the older full manual to auto-focus mount,
but that is all. Nikon and Pentax, I am told, hasn't changed their lens
mount 50 years or so.

*Assuming the lens is not designed as an APS-C crop with 'equivalent
focus range' and a circular image on a larger sensor.

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