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Depth of field Preview button

krm100

Whitestone, US
57 posts

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krm100 Gold Member Nikonian since 13th Jan 2010
Sun 13-Mar-11 11:13 PM

When I press the depth of field preview button the viewfinder gets a little dim, but I do not see a difference. Is there a subtle difference that I am missing? i also could not see a difference on my D90.

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luckyphoto

Port Charlotte, US
1055 posts

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#1. "RE: Depth of field Preview button" | In response to Reply # 0

luckyphoto Silver Member Nikonian since 27th Dec 2010
Sun 13-Mar-11 10:42 PM

The viewfinder gets dim because when you use DOF preview you're viewing through the aperture diameter as it will be when the photo is taken. For example, if you use aperture priority and select f22 and use DOF preview, things will get REAL, REAL dark!

Larry

"Red is gray and yellow white, but we decide which is right
....and which is an illusion"

Moody Blues - Nights in White Satin

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krm100

Whitestone, US
57 posts

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#2. "RE: Depth of field Preview button" | In response to Reply # 1

krm100 Gold Member Nikonian since 13th Jan 2010
Mon 14-Mar-11 12:12 AM

When I press the DOF button, I just see a dimming. I do not see in focus and out of focus areas.

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JosephK

Seattle, WA, US
7108 posts

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#3. "RE: Depth of field Preview button" | In response to Reply # 2

JosephK Silver Member Fellow Ribbon awarded for his excellent and frequent contributions and sharing his in-depth knowledge and experience with the community in the Nikonians spirit. Nikonian since 17th Apr 2006
Mon 14-Mar-11 01:17 AM

The most out-of-focus viewing will be seen with the lens wide open and bright. As you stop down the lens, along with getting darker, parts further in front and behind the focus plane will also get more in focus.

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Joseph K
Seattle, WA, USA

D200, 17-55mm f/2.8 DX, 70-200mm f/2.8 VR, 50mm f/1.4 D,
18-70mm f/3.5-4.5 DX, 70-300mm f/4-5.6 ED, D70S

Bald Eagle

US
29 posts

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#4. "RE: Depth of field Preview button" | In response to Reply # 3

Bald Eagle Registered since 24th Dec 2008
Mon 14-Mar-11 02:37 PM

I have always felt that this was a useless feature - I cannot afford to depend on what I can bearly see to have elements important to the image to be focus- better to learn your lenses, hyperfocal distance etc to be sure about the sharpness of your image.

dm1dave

Lowden, US
13751 posts

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#5. "RE: Depth of field Preview button" | In response to Reply # 2

dm1dave Administrator Awarded for high level knowledge and skills in various areas, most notably in Wildlife and Landscape Writer Ribbon awarded for his excellent article contributions to the Nikonians community Donor Ribbon awarded for his very generous support to the Fundraising Campaign 2015 Nikonian since 12th Sep 2006
Mon 14-Mar-11 08:30 PM

This feature works best when you are shooting with a very narrow DoF like in macro photography.

If you have a macro lens or a fast aperture prime, a 50mm f/1.8 or 85mm f/1.4 for example, and focus very close to your subject you will be able to see the increased DoF as the lens stops down when you press the button.

Dave Summers
Nikonians Photo Contest Director
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mhiker

New Port Richey, US
70 posts

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#6. "RE: Depth of field Preview button" | In response to Reply # 0

mhiker Silver Member Nikonian since 15th Dec 2010
Tue 15-Mar-11 01:27 AM

I also consider the DOF preview button a useless feature. I assigned it to call the Non-CPU lens data entered on my D7000 for the ability to use my AIS manual focus Nikkor lenses.

Michael

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