Conclusion - Page 2" /> Conclusion - Page 2">

Even though we ARE Nikon lovers,we are NOT affiliated with Nikon Corp. in any way.

We are starting our webinars. First one is on the Nikon Z6ii and Z7ii cameras. More info


Sign up Login
Home Forums Articles Galleries Members Galleries Master Your Vision Galleries 5Contest Categories 5Winners Galleries 5ANPAT Galleries 5 The Winners Editor's Choice Portfolios Recent Photos Search Contest Info Help News Newsletter Join us Renew Membership About us Retrieve password Contact us Contests Vouchers Wiki Apps THE NIKONIAN™ For the press Fundraising Search Help!


Understanding DOF and Aperture & Shutter Speed Relationships

Darrell Young (DigitalDarrell)

Keywords: fundamentals, dof, depth_of_field, camera, basics, guides, tips

Page 2/2 next page show all pages

Notice also that the shutter speed changed as you stopped down your lens. At f/1.8 you needed 1/6000th of a second to keep the light from overexposing your image. A large, fast aperture lets in a LOT of light, so you can only let it in for a short time -- by using a fast shutter speed. As you stopped down to f/8, your shutter speed moved to 1/500th of a second.

50mm f/1.8 AF Nikkor

50mm f/1.8 non-D AF Nikkor

The aperture opening is smaller at f/8 than at f/1.8 and less light is getting in through a smaller opening, so the light needs to come into the camera for a longer period of time. 1/500th of a second is a much longer time than 1/6000th of a second.

Then, notice how your shutter speed dropped to 1/40th of a second when you stopped down to f/22. At f/22 very little light is coming into the camera, so you have a long shutter speed at 1/40th of a second.




As you make the aperture opening smaller (f/22), you must let the light come in longer. As you make the aperture opening larger (f/1.8) you must let the light in for much less time. Does that make sense?

Aperture => Quantity of Light
Shutter Speed => Duration of Light

These two things work together to help you control the exposure and look of your image. With a fast aperture (large opening, f/1.8) you have very little depth of field, so you can isolate your subject from her surroundings. With a slow aperture (small opening, f/22) nearly everything in the image is in focus.

Experiment with your camera in M (Manual) or A (Aperture Priority) modes and learn how these relationships affect depth-of-field and the subsequent image's appearance.

Keep on capturing time...


(8 Votes )
Page 2/2 next page show all pages

Originally written on June 24, 2010

Last updated on May 28, 2016

1 comment

Kim Norton (krn) on October 25, 2013

So glad I figured out I can change the background to white. With my aging eyes it is hard to see a black screen with white text.

Page 2/2 next page show all pages