<s>
Petri	B-Algorithm
TTL	I-Algorithm
was	O
a	O
manual	O
35mm	O
SLR	B-Algorithm
camera	I-Algorithm
with	O
TTL	O
metering	O
.	O
</s>
<s>
The	O
Petri	B-Algorithm
TTL	I-Algorithm
was	O
a	O
no-frills	O
and	O
very	O
conservative	O
camera	O
.	O
</s>
