By: Elinor Osborn

Elinor Osborn — Tue, 28 Apr 2015 11:41:27 +0000

Haven’t read any of the comments above but I’ll take a stab at f8. Your exposure for white in sun is 1/3200 f8 ISO 400. Shade or cloud needs about 2 to 2 2/3 stop lighter. So 1/3200 to 1/1000 = +1 2/3. ISO 400 to ISO 640 = +2/3 Total +2 1/3 The whole image in general seems lighter than middle tone and there is just a little white. So +2 1/3 should be enough, therefore leave aperture at f8.

By: David Peake

David Peake — Tue, 28 Apr 2015 01:30:14 +0000

Hi again Artie.
That is such a great shot. I can’t believe we are all making such a meal out of the shot details.
I checked the sunny 16 rule and it says F 16 for sunny , ISO 100 shutter 1/100!
So your normal starting point for your test exposure is the same exposure as this using F 6.5 ISO 400 and 1/3200 shutter.
Its bright here today so I got my camera out and played with the settings.and indeed these two different sets of values give the same exposure value. At least within a third of a stop.
So my new deduction is this. Your exposure value should be roughly similar to the above rule for a cloudy day. I’m unsure weather we need to factor in the amount of over exposure you have dialled in above the cameras meter. Since it comes down to a hard number I thinks this might be a distraction.
Whatever, the rule gives ISO 800 1/1000 , f8. For cloudy.
Therefore at 1/1000, ISO 640 your camera meter gives you f7.1
Shooting + 2 EV above this would yield a value of f 3.6.
So now I have one leg on the boat, one on the dock and one in the water.
Someone needs to,save me soon.:-)
Regards
David.

Comments on: Spoonbill Aperture Quiz

By: Elinor Osborn

By: David Peake