About Zooming; Detaching The Lens - Canon EOS 550D Instruction Manual

Attaching and Detaching a Lens
About Zooming
Detaching the Lens
To zoom, turn the zoom dng 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 sJightly.
While pressing the lens remease
button, turn the Rens as shown by
the arrows.
® Turn the lens until it stops, then
detach it.
® Attach the rear lens cap to the
detached lens.
® Do not Iook at the sun directly through any lens. Doing so may cause
_oss of vision
If the from part (focusing ring) of the lens rotates during autofocusmg, do
not touch the rotating part.
image Conversion Facto[ °o_mage sensor size
Since the image sensor size _s (22.3x !4.9 mm/ 0.88x 0.59in,
smaller than the 35mm film
format, it will _ook like the lens --35mm image size
36x24 mm1142x0 94[n j
focal lengm _s increased by 1.6x. " " " •
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