<s>
The	O
70-210mm	O
lens	O
is	O
a	O
telephoto	O
zoom	O
lens	O
made	O
by	O
Nikon	B-Algorithm
.	O
</s>
<s>
The	O
lens	O
has	O
an	O
F-mount	B-Architecture
to	O
work	O
with	O
all	O
compatible	O
Nikon	B-Algorithm
SLRs	O
and	O
DSLRs	O
.	O
</s>
<s>
As	O
opposed	O
to	O
the	O
various	O
f/2.8	B-Algorithm
versions	I-Algorithm
of	O
the	O
70-210	O
Focal	B-Algorithm
length	I-Algorithm
,	O
the	O
f/4	O
and	O
slower	O
versions	O
of	O
such	O
lenses	O
are	O
marketed	O
to	O
amateurs	O
,	O
accounting	O
for	O
their	O
price	O
.	O
</s>
