A Site for Photographers by Photographers

Community > Forums > Canon EOS > EOS Lenses > Lens Calibration

Featured Equipment Deals

Latest Equipment Articles

Tamron 28-300mm F/3.5-6.3 DI VC PZD Lens Review Read More

Tamron 28-300mm F/3.5-6.3 DI VC PZD Lens Review

Are you looking for a lens that is ready for anything? Tamron recently released their 28-300mm F/3.5-6.3 DI VC PZD lens and they are calling it the "innovative all-in-one zoom."

Latest Learning Articles

Equipment Basics (Video Tutorial) Read More

Equipment Basics (Video Tutorial)

This video tutorial introduces the basic equipment--from extra lenses and tripods to reflectors and flashes--that you may want to invest in when getting started with your first DSLR.

Lens Calibration

Danny Best , Oct 20, 2006; 02:05 p.m.

I have read quite a few questions that people have had about their lenses whether or not they should keep them or get new ones because they aren?t sharp. There will usually be a response that says that they got their lens calibrated for the body they are using. What is this? And is it worth it? And what does it usually cost? And how long does it usually take? I have a canon 30d. I have Canon 28-135,100mm macro, 100-400. Can these be calibrated?


Jerry Tabachuk , Oct 20, 2006; 02:56 p.m.

are you happy with the setup you've got? It's free if under warranty, have to send it to the Canon repair facility, takes about a week to 10 days. I just sent the lens alone for calibration 70-200 f4/L and it performs the same after "focus and tilt were adjusted". The problem was a slight backfocusing, BTW this is on 30D. I know the lens is sharp, I suspect it is the combo that need to be calibrated.

Mark U , Oct 21, 2006; 08:32 a.m.

Your lenses and camera can all be calibrated. However, it's only worth worrying about if your images show focus problems. If they do, you should conduct focus tests with the camera on a good tripod, using mirror lockup and timed or remote release. Set IS off for the 28-135, and try both with and without IS on the 100-400. Compare AF and manual focus. If your tests show consistent AF errors (all in the same direction) with one lens, then calibration may improve AF: if errors show with all lenses, then the body may need adjusting. Best calibration results are obtained by having Canon calibrate both lenses and the body. Focus testing needs to be done with care - it can be all too easy to make mistakes such as failing to realise that the focus point is actually sensitive to a wider area than the viewfinder appears to show.

Canon's own advice starts on p 33 of this document:


Back to top

Notify me of Responses