Lense Compatability

[rockb]

I did find threads related to SLR lenses on a DSLR but did not see anything about lenses across different DSLR Models.  If this has already been answered please direct me to the appropriate thread.

I have an EOS 20D.  I'd like to get a little newer body but do not want to have to get new lenses.  Will the lenses I have for the 20D work on all the EOS XXD models?

[desultory]

AHA !  Wasn't that simple as pie?   Some of them I can guess.  Everything makes sense but often a little fuzzy to the uneducated mind.  Thank you.

[RobertTheFat]

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@desultory wrote:

AHA !  Wasn't that simple as pie?   Some of them I can guess.  Everything makes sense but often a little fuzzy to the uneducated mind.  Thank you.

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Yeah, but in your defense, the term "Ultra Sonic" is a proposterous exaggeration in that context. Almost an offense against the English language (and/or the Greek language). 

[ebiggs1]

"Ultra Sonic" is a proposterous exaggeration ..."

Not when describing my Ultra Sonic Screwdriver.  Made by Dewalt and used by Dr. Who.  It can fix anything.

[rfdesigner]

One final thing that Rob at Lensrentals discovered burired in the data and marketing but Canon doens't make a big thing of. New lenses (maybe only new L lenses) seem to have more accurate autofocus when working with the latest AF sensors (AKA the 61 point as found on the 5DIII & 7DII) As I understand it lenses released from the 70-200 f2.8 IS II onwards seem have this higher degree of focus accuracy.. at least when working on centre spot AF with stationary subjects.

[RobertTheFat]

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@ebiggs1 wrote:

"Ultra Sonic" is a proposterous exaggeration ..."

Not when describing my Ultra Sonic Screwdriver.  Made by Dewalt and used by Dr. Who.  It can fix anything.

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Ah, but can it do so at "well above the speed of sound" (which is, of course, what ultrasonic means in contemporary English)? 

[ebiggs1]

Not only at the speed of sound but at the sped of "time"!

[ebiggs1]

"New lenses (maybe only new L lenses) seem to have more accurate autofocus when working with the latest AF sensors (AKA the 61 point as found on the 5DIII & 7DII)"

Do you not think improvements in AF design would not do this?  It is only reasonable to assume better AF systems will focus, ah better, is it not?