Vesa Perala wrote:
I believe in Canon-terminology 3.5 is half a stop slower than 2.8.
Just like 4 - 4.5 - 5.6.
If it really matters.
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Not that it does but while 3.5 is a half stop, 4.5 is a 1/3 stop. F4.9 would
be a half.
PK
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