Why do we say "shutter speed"

Chris_L 5 5.3k United Kingdom
8 Nov 2018 5:16PM
Just been watching a video about several other terms. Seems ISO should be IOS?! Grin

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Paul Morgan 18 19.4k 6 England
8 Nov 2018 9:58PM
These days people seem to think that a lens with great depth of field means practically zero depth of field Smile

I can remember films measured in ASA and Din, now everyone uses ISO.
16 Nov 2018 4:37PM
Wow, what have I started here - To me it's obvious that anything measured in seconds or fractions of a second is a time, but as has been pointed out, the term shutter speed has taken root.

My point is that it causes confusion, Chris_L above seems to have the same issue. I've taken to starting by explaining to students that what matters is how long the shutter is open and therefore for how long light can enter, but that is is called commonly (wrongly) called shutter speed. Since I've been doing that, everyone seems to have got it, including totally non-technical people.
altitude50 15 16.3k United Kingdom
16 Nov 2018 4:52PM
Very Timely...... Wink
dcash29 14 2.4k England
16 Nov 2018 7:31PM
The answer is in the video above - By the book, it will explain everything you need to know apparently.

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