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DOF / Hyperfocal questions for D7100

Devrishi

Kanpur, IN
94 posts

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Devrishi Registered since 23rd Apr 2013
Tue 21-May-13 07:44 AM | edited Tue 21-May-13 07:56 AM by Devrishi

Hello,

I have D7100 & Nikkor 16-85mm Lens. I am trying to understand DOF / Hyperfocal distance and have few questions to ask.. kindly answer my questions:

1. On DOF Calculator, we do not have D7100 (Sensor) for reference, which camera (sensor) should i consider for DOF / Hyperfocal distance calculation?
2. What is the COC of D7100?

Now suppose i am shooting a Landscape in Camera 'Manual' mode & consider the following in the DOF Calculator..

a. Camera D7000 for reference.
b. Focal Length - 16mm
c. Selected f-stop - f/16
d. Subject at 20'

The hyperfocal distance from DOF Calculator comes to 2.68'. This means that i should lock the focus at 2.68' - frame the landscape & shoot. The best distance that i can measure is camera facing the ground level at a height of 2.68' or around 32". So i put the lens on A/M mode - half shutter - autofocus the ground - release shutter - Switch to M mode on Lens - adjust the lens focus ring so that the hyperfocal distance is approx 2.68' - frame my landscape & shoot. In this case my depth of field will be 2.68'/2=1.34' to infinity.

Now two questions:

3. Is the above process / description correct?
4. When i focus on the ground at hyperfocal distance of 2.68', where should be my auto focus point? In the final landscape frame just before shooting, should i move the auto-focus point on the subject and shoot? OR once focused at hyperfocal distance of 2.68', the final Landscape frame becomes independent of the location of Auto-focus point as everything from 1.34' to infinity will be in focus?

Thanks for your replies...

Best regards

Sandeep Prakash Srivastava

Visit my website: www.myincredibleimages.com.

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