Increasing ISo decreasing Aperture.

Started Oct 5, 2012 | Discussions thread
Tino27 Regular Member • Posts: 142
Re: Increasing ISo decreasing Aperture.

The difference between the f/2.0 and f/3.5 is 1 2/3 stops. Thus, your ISO would also have to open up by 1 2/3 stops, so it would go from 100 to 320. BTW, as far as I know, if your camera is measuring in 1/3 stop increments (some cameras do give you the option for 1/2 stop increments), there would be no ISO 600. The closest would be ISO 640.

You should note, however, that the DOF (depth of field) you can achieve at f/2.0 will be significantly different than the one at f/3.5. At f/2.0, the DOF will be exceptionally narrow. That being said, f/2.0 ISO 100 Speed 100 will get you the same amount of light as f/3.5 ISO 320 Speed 100.

 Tino27's gear list:Tino27's gear list
Canon EOS 60D Canon EOS 5D Mark III Sigma 50mm F1.4 EX DG HSM Canon EF 70-200mm f/2.8L IS II USM Sigma 17-70mm F2.8-4 DC Macro OS HSM +3 more
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow