Posts Tagged ‘Aperture’

Project focus: Focus with different apertures

Posted on: July 4th, 2011 by Kari Selovuo No Comments

This exercise was about depth of field (DOF) with different apertures. For this exercise I selected a Nikon 50mm f1.2 lens because of it’s f -value.  I took four shots with apertures 1.2, 2.0, 5.6 and 16. The sharpness of a picture is not the same when viewed on screen and when printed. The area that appeared sharp was larger on prints compared to viewing the picture on screen 100%.

I have drawn white lines to mark the sharp area when viewed on screen. I also noticed that it is a not so easy to decide where to draw the line. What is sharp to someone may be blurry to someone else.  To determine the DOF on a given aperture on a given focal length for different size sensors, one can use calculators that can be found in the internet. I have no idea how accurate they are. (more…)

Project Focus: Focus with a set aperture

Posted on: July 4th, 2011 by Kari Selovuo No Comments

The objective of this exercise was to understand the importance of having the subject focused. I like to shoot wide open with a shallow depth of field (DOF). For this exercise I selected a Nikon 50mm f1.2 lens. When shot wide open, this lens has very shallow DOF, so that the image might appear to be out of focus. One should be careful with this when used for shooting portraits. You may get the nose sharp but eyes out of focus. (more…)