Stacking Canon Tele Extenders

By / 7 years ago / Cool, Technology / No Comments

Estimated reading time: 3 minute(s)

5 stacked canon tele extenders
Tele extenders or teleconverters are a great way to increase the zoom on your camera lens. One day I thought to myself, what if you could stack these. Turns out you can. And pretty much as many as you want, or can afford. These guys stacked 5 of them with a 800mm lens and used the monstrous setup to photograph the moon. It turned out pretty well.

Of course using extenders comes at a cost, reduced aperture or captured light. So you will need longer exposure times. Also it makes it harder to get the image perfectly focused. But apparently it can be done. Here are the results.
Shot with a Canon 1D Mark IV, 800mm f5.6, and 5 2x teleconverters! An equivalent of 24,800mm was achieved with this experiment!

For this one ‘only’ three extenders were used. Which turned out quite a bit clearer.

And here is a video shot using all 5 extenders.


Johny (John-Erik) Krahbichler is the CEO and main author of Gadgetzz, since 2009. While Mr. Krahbichler's expertise is in consumer electronics, his true passion is science´, and educating the world about the universe we inhabit. Check out the non-profit Scientific Literacy Matters Currently Johny is using his experience from covering trade shows such as the CES, to work with trade show exhibition marketing.

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