Advanced Tips for Canon EOS 40D : Canon EOS 40D: Aperture Priority

Manually set aperture, shutter speed automatically adjusts. Learn how to use auto focus in the aperture priority mode for the Canon EOS 40D Digital SLR camera in this free Canon photography lesson.

Expert: Ryan Vaughn
Bio: Ryan Vaughn is a photo enthusiast who has used his expertise for professional wedding portraits and business promotion.
Filmmaker: MAKE | MEDIA

Category:

Science & Technology

Tags:

• digital
• cameras
• canon
• EOS
• camera
• SLR
• photography
• free
• how
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[boomqwer]

@boomqwer They pay by the hour I guess ? 

[boomqwer]

It took him 0:50 to get past the part on how to turn the more ON ! ?

[MantisDestroyer]

what should the aperture be for basic sunny outdoor? doing head shots thanks!

[AshleyMasonuczrq]

Travel around the world with an Latino women **rockmycity.info**

[Andresoioioi]

lol I really think that if you want to make a photography tutorial video you should think at least a little about how your framing your shoot...

[HankJMH]

For those of you who criticize the video for saying to hold the shutter half way down when changing the aperture setting, he repeatedly said that he's checking the exposure in the camera's meter to make sure there's enough light. You must hold the shutter half-way down to do this.

[homersimpson587]

lol if you don't know what aperture is u shouldn't have a 40d... why buy a semi pro DSLR as a beginner?

[Ch051]

aperture = how wide the hole of your lens is, measured in f/#'s or f-stops. a higher f/# means a smaller hole meaning less light gets in. a lower f/# means a larger hole meaning more light gets in. aperture affects depth of field, inversely. that is to say, a larger aperture results in a smaller depth of field.

another way of thinking about it is: small number, small depth of field. large number, large depth of field

fyi, depth of field is how much of the picture is in focus.

[poplarparkfilms]

yeah no doubt, on my rebel k2 you don't need to hold it down in that mode either

[ddtninja]

well, to give him some credit, you do need to press the button halfway if your camera is "asleep" (which his was). but you think he'd realize he doesn't need to keep it down.