50/1.4 & 85/1.8 focus off

I decided to take my friend's advice and test all my lenses against my camera bodies to see if my lenses are properly focusing.

If my 50/1.4 and 85/1.8 are backfocusing on all 4 camera bodies (20D, 40D, 5D2, 7D), can I assume it is definitely the lens?

On the 5D2 and 7D, I can set the micro-AF adjustments to -8 for the 50/1.4 and -10 for the 85/1.8, which seems to correct it.

My other lenses all seem to focus properly. Then again, it is a crude test (take photos of the focus target on the table from a 45-degree angle).

Is it worth sending the 2 lenses into Canon? What would they charge?

if you planning on using it on your 20D and 40D often then why not?

I sent in my 50mm 1.4 for recalibrating and it came back super sharp but i forgot how much they charged me i think it was like $80 or so but it was worth it to me since i own a 5d = no MA...

My 5D2 and 7D are less than a month old. Do you think they would recalibrate those 2 lenses to these bodies for free? So that I don't have to use MA offsets.

you want to calibrate it to the 5D2 and the 7D i don't really see a point in it but i do for the 20D and 40D. Only down part is you gotta send in the bodies too

There is a chance the bodies may need calibration. my 85mm is off at longer distances on 40D, and so are a few other lenses. I can't see any problem on 1Ds mk2 though so it can't be the lens.

I was thinking if the properly calibrate it for the 5D2 and 7D, it would fix the same issue on the 20D and 40D, since it is the same issue on all the bodies with these 2 lenses.