Canon EOS 1300D - Manual (Page 45)

45
Attaching and Detaching a Lens
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.
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.
Zooming
Detaching the Lens
 Do not look at the sun directly through any lens. Doing so may cause
loss of vision.
 When attaching or detaching a lens, set the camera’s power switch
to <2>.
 If the front part (focusing ring) of the lens rotates during autofocusing, do
not touch the rotating part.
 During viewfinder shooting or Live View shooting, if you use a TS-E lens
(except the TS-E17mm f/4L or TS-E24mm f/3.5L II) and shift or tilt the
lens or use an Extension Tube, the standard exposure may not be
obtained or the exposure may be irregular.
Angle of View
Since the image sensor size is
smaller than the 35mm film
format, the angle of view of an
attached lens will be
equivalent to that of a lens with
approx. 1.6x of the focal length
indicated.
Image sensor size (Approx.)
(22.3 x 14.9 mm / 0.88 x 0.59 in.)
35mm film size 
(36 x 24 mm / 1.42 x 0.94 in.)