<s>
They	O
are	O
of	O
the	O
EF	B-Application
lens	I-Application
mount	I-Application
that	O
is	O
compatible	O
with	O
the	O
EOS	B-Algorithm
line	I-Algorithm
of	O
cameras	O
.	O
</s>
<s>
The	O
two	O
5.6	O
versions	O
were	O
contemporaries	O
,	O
launched	O
at	O
the	O
beginning	O
of	O
the	O
Canon	B-Algorithm
EOS	I-Algorithm
system	O
.	O
</s>
<s>
Canon	O
decided	O
to	O
upgrade	O
the	O
non-L	O
version	O
in	O
the	O
early	O
1990s	O
to	O
the	O
4.5-5.6	O
version	O
,	O
not	O
the	O
L	O
.	O
It	O
had	O
improved	O
styling	O
,	O
a	O
ring	O
zoom	O
control	O
instead	O
of	O
push-pull	O
,	O
and	O
a	O
larger	O
(	O
faster	O
)	O
aperture	B-General_Concept
at	O
the	O
wider	O
end	O
.	O
</s>
<s>
Attribute	O
5.6	O
5.6L4.5	O
–	O
5.6	O
USM	O
Image	O
stabilizer15px|No	O
No	O
Ring	O
USM15px|No	O
No15px|Yes	O
Yes	O
L-series15px	O
|No	O
No15px|Yes	O
Yes15px|No	O
No	O
Diffractive	O
Optics15px|No	O
No	O
Ultra-low	O
dispersion	O
glass	O
element15px|No	O
No15px|Yes	O
Yes15px|No	O
No	O
Synthetic	O
Fluorite	O
glass	O
element15px|No	O
No15px|Yes	O
Yes15px|No	O
No	O
Macro15px|Yes	O
Yes	O
Short	O
back	O
focus15px|No	O
No	O
Maximum	O
aperture	B-General_Concept
5.6	O
4.5	O
–	O
5.6	O
Minimum	O
aperture	B-General_Concept
32	O
40	O
Weight	O
685	O
g	O
695	O
g	O
540	O
g	O
Max	O
.	O
</s>
