<s>
The	O
EF28	O
–	O
80mm	O
f/3.5	O
–	O
5.6	O
is	O
a	O
zoom	O
lens	O
produced	O
by	O
Canon	O
Inc	O
.	O
for	O
their	O
series	O
of	O
EOS	B-Algorithm
single-lens	B-Algorithm
reflex	I-Algorithm
cameras	I-Algorithm
.	O
</s>
<s>
The	O
other	O
28	O
–	O
80mm	O
lens	O
is	O
the	O
EF28	O
–	O
80mm	O
f/2.8	O
–	O
4L	O
USM	O
,	O
which	O
was	O
an	O
EF	B-Application
mount	I-Application
wide-to-normal	O
zoom	O
lens	O
introduced	O
by	O
Canon	O
in	O
April	O
1989	O
.	O
</s>
<s>
The	O
L	O
version	O
is	O
considerably	O
faster	O
,	O
with	O
an	O
aperture	B-General_Concept
range	O
of	O
f/2.8	O
–	O
4.0	O
(	O
as	O
opposed	O
to	O
f/3.5	O
–	O
5.6	O
)	O
.	O
</s>
<s>
Unlike	O
newer	O
L-series	O
lenses	O
,	O
it	O
is	O
not	O
a	O
constant	O
aperture	B-General_Concept
lens	O
;	O
the	O
maximum	O
aperture	B-General_Concept
of	O
this	O
lens	O
varied	O
with	O
the	O
zoom	O
(	O
f/2.8	O
@	O
28	O
mm	O
,	O
f/4.0	O
@	O
80	O
mm	O
)	O
.	O
</s>
<s>
Canon	B-Algorithm
EF	I-Algorithm
28	I-Algorithm
–	I-Algorithm
80mm	I-Algorithm
lens	I-Algorithm
Attribute	O
L	O
(	O
original	O
)	O
USM	O
II	O
II	O
USM	O
III	O
USM	O
IV	O
USM	O
V	O
USMKey	O
features	O
Image	O
stabilizercolspan	O
=	O
8	O
Environmental	O
Sealingcolspan	O
=	O
8	O
USMcolspan	O
=	O
4	O
L-seriescolspan	O
=	O
7	O
Diffractive	O
Optics	O
colspan	O
=	O
8	O
Technical	O
data	O
Maximum	O
aperture	B-General_Concept
2.8	O
–	O
4	O
3.5	O
–	O
5.6	O
Minimum	O
aperture	B-General_Concept
22	O
22	O
–	O
38	O
38	O
22	O
–	O
38	O
38	O
22	O
–	O
38	O
Filter	O
diameter	O
72	O
mm	O
58	O
mm	O
Horizontal	O
viewing	O
angle	O
75°	O
–	O
30°	O
Vertical	O
viewing	O
angle	O
46°	O
–	O
17°	O
Diagonal	O
viewing	O
angle	O
;	O
65°	O
–	O
25°Physical	O
data	O
Weight	O
945	O
g	O
200	O
g	O
330	O
g	O
200	O
g	O
205	O
g	O
200	O
g	O
Max	O
.	O
</s>
