How to Stack Canon Extenders

UPDATED: Feb 28th 2017 – Note added about loss of infinity focus. Firstly, if you aren’t familiar with the use of extenders, sometimes called teleconverters, I’d urge you to read my existing in-depth guide to using extenders for your photography. Extenders allow us to extend the focal length of compatible lenses, and they come in a variety of magnifications. For Canon lenses, they are available in 1.4x or 2x variations, and we’ll be focussing on extenders for Canon cameras in this particular article. Stacking extenders simply means using more than one of them simultaneously, and for Canon lenses the solution is quite …

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