Digital Photography 1 on 1: Episode 12 Depth of Field

In this episode Mark explains Depth of Field.

Category:

Education

Tags:

• snapfactory
• Mark Wallace
• AdoramaTV
• Adorama
• Canon
• Nikon
• depth of field
• focus
• photography
• digital

[blackhalk555]

What lens did you use to take the f/1.2?

[snapfactory]

@blackhalk555 The Canon 85mm F/1.2 L

[phovidsm]

great video(s)!! it would be great if you would open an facebook page :)

[snapfactory]

@phovidsm I do have a facebook page. The link is on our youtube channel or just go to facebook and add jmarkwallace to the URL.

[sflorman72]

Marc, great video. Love the teach and explain. This was helpful. Need to watch this again to better get the DOF down pat. I know you did some videos on Light meter but wish you coud do an episode that talks more in depth tutorial wise.

[snapfactory]

@sflorman72 anything specific you'd like to know?

[dombower]

@Acubeist perfect, you are comparing 2 different focal lengths and some how correlating that to a change of DOF due to the sensor… WRONG. Effective focal length does not change depth of field of a lens, Actual Focal length. Here is a good test for you. Put a 50mm on a crop body and look through it, (it has the same dof as your eye) now stick it on a full frame (it still has the same dof, just more fov)

[burubura]

best explained tutorial video on internet..thnks :)

[twowheelworld]

Why use a flash in day light ?

[Acubeist]

@snapfactory Sensor size DOES affect Depth of Field. It gives around 1 stop of shallower DOF compared to a crop sensor for example, given the same 'frame'.... which is something like a 30mm on a 1.6x crop sensor vs 50mm on a Full Frame camera. Both shooting the same subject from the same distance. The full frame camera will exhibit a shallow Depth of Field... :)

[Acubeist]

@eyalyossef22 Focal length used was the one which made the "size" change. A shorter focal length like 24mm will include a lot more background into your picture, hence making your subject smaller. A longer focal length like a 70mm would 'compress' your image even more so there is less background/foreground included in the picture.. :)

[Acubeist]

@edu3dw4rd Try to zoom in or get as close as possible to your subject and use the widest aperture possible(smallest f number). That's the best you can do already.. :) One reason why PnS cameras do not give as shallow DOF as DSLRs is mainly because their optical sensors are really small compared to DSLRs. That's why it's so hard to get that "bokeh" effect

[dombower]

@edu3dw4rd usually because the lens on those cameras are actually very short focal lengths. you would need to get very very close to your subject to get any blurry background, try taking photos of some spiders close up. there you will get some shallow dof

[edu3dw4rd]

Hi Mark,

why do point shoot cameras cannot give shallow DOF? I have panasonic dmc zs-7, and it has manual mode in it. However, when I open the aperture value, it still gives me sharp background. Thus, in order to get DOF, I should put my camera really close to my photo object or subject. Could you suggest what should I do to achieve DOF using point shoot camera?

Thx

Edward

[eyalyossef22]

its not all true. distance from the object not matter and focat length not matter.

whats matter its 3 things:

aperture

sensor size

and the size of the object..,

why not focal length its not matter and size of the object matter?

marc showed that he changing lens and you see more shallow D,O,F but the truth is that the size change also. if you shot close up. and stay on that close up. but change lens the D.O.F will be the same.