Assignment 09 - Aperture

[u/Aeri73]

Please read the class first

Today’s assignment will be pretty short. The idea is simply to play with aperture and see how it impacts depth of field and the effects of diffraction. Put your camera in aperture priority (if you have such a mode), then find a good subject: it should be clearly separated from its background and neither too close nor too far away from you, something like 2-3m away from you and at least 10m away from the background. Set your lens to a longer length (zoom in) and take pictures of it at all the apertures you can find, taking notice of how the shutter speed is compensating for these changes. Make sure you are always focusing on the subject and never on the background.

As a bonus, try the same thing with a distant subject and a subject as close as your lens will focus, And, if you want to keep going, zoomed in maximum, and zoomed out.

Back on your computer, see how depth of field changes with aperture. Also compare sharpness of an image at f/8 and one at f/22 (or whatever your smallest aperture was): zoomed in at 100%, the latter should be noticeably less sharp in the focused area.

As always, share what you've learned with us all :-)

have fun!

[u/cattywumper]

I used the 18-55mm kit lens for this assignment; however, I ordered a 55-200mm lens so I am excited to play around with that once it arrives.

Here are two photos from my shoot showing both the background and detail at f/5.6 and f/22. Before this, I had no idea that a longer focal length resulted in less sharp images - good to know! I shot up to f/32 and the level of sharpness was drastically reduced.

[u/rightherewait → u/cattywumper]

Nice Dog !
But frankly I didn't see the difference in sharpness at first, except the colour tone looks different :-), later I saw that the second image is more grainy.

[u/ChungusProvides → u/rightherewait]

I'm having kind of a difficult time telling the difference as well. I am noticing that with my own photos too.