Canon lenses calibration

Started 5 months ago | Discussions thread
Zeee Forum Pro • Posts: 21,973
Re: Canon lenses calibration

CESA wrote:

Ken60 wrote:

I had a lens that produced similar issues with varying results, cost me a repair bill for a rebuild and a couple of parts.

Does this mean that whatever the distance you calibrate the results should be the same?

Distance effects MFA results. That is why it is recommended

1. At Location

2. Distance you normally shoot at

3. 50X

Lighting is relevant, if you are using a lens for landscape I would suggest calibrating in daylight..... the longer wavelengths of tungsten will make a difference. As you are aware so are the issues with slower speeds induced by often lowish lighting indoors. They also suggest working at the distances most used in practice...... so making a macro lens perfect at 15 feet is not the best plan. Pray for a bright cloudy day , with a constant EV.

True.

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