Canon RebelT3i EOS 600D Instruction Manual page 37

Attaching and Detaching a Lens
About Zooming
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To zoom, turn the zoom ring on the lens
with your fingers.
If you want to zoom, do it before
focusing. Turning the zoom ring after
achieving focus may throw off the
focus slightly.
Detaching the Lens
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While pressing the lens release
button, turn the lens as shown by
the arrow.
® Turn the lens until it stops, then
detach it.
® Attach the rear lens cap to the
detached lens.
O
Do not look at the sun directly through any lens. Doing so may cause
loss of vision
If the front part (focusing ring) of the lens rotates during autofocusing, do
qot touch the rotating par[.
I_] Image Conversion Factor
Since the image sensor size is
smaller than the 35mm film
format, it will look like the lens
focal length is increased by
approx 1.6x.
F Imagesensorsee (Approx.)
(22.3 x t4.9 mm/0.88 x 0.59in.)
L35mm image size
36x 24 mm/ 1.42x 0.94 in._
37