Aperture – Why, When, How

Aperture is very strange to me, some times some things just click and I understand why and how… but with aperture, I havent found any good information that explains why things happen differently using different settings, sure, I know what the result is going to be, but WHY? I have searched everywhere on the internet, read a few books, not only on photography, but on optics, raytracing, maths…

 

I will explain what the numbers are and what they do, I will show some images I took to show the difference, and I will try and explain the physics behind it. I am not sure how technical this will be, because I dont know as I am writing this, so lets get started…

 

aperture-hole-size-examples.png

Aperture size from wide to narrow, the bigger the hole the more light gets in which means we can keep the shutter open less time.

Actual aperture opening on a lens

Actual aperture opening on a lens

_0000_focus-hawx-f35-0200sec.png

Focus on the closest object; HAWX, Aperture at the widest, f/3.5, shutter time, 0.2sec

 bla bla bla

_0001_focus-hawx-f22-8sec.png

Focus on the closest object; HAWX, Aperture at the narrowest, f/22, shutter speed, 5sec

bla bla bla bla

_0002_focus-vegas-f35-0125sec.png

Focus on the farthest object; Vegas, Aperture at the widest, f/3.5, shutter speed, 0.2sec

 bla bla bl bla

_0003_focus-vegas-f22-5sec.png

Focus on the farthest object; Vegas, Aperture at the narrowest, f/22, shutter speed, 8sec

bla bla bla bla

Start Slide Show with PicLens Lite PicLens

Leave a Reply

You must be logged in to post a comment.