17-40mm Wide Angle

Back to the ultra wide angle.  Two pictures from same distance of about 1 foot to demonstrate focal length.

ISO 400 / 39mm / F8 – focus is on the eye…notice the blur on the bow and in the background

2018-11-24-PotD-001-2.jpg

The second picture

ISO 400 / 40mm / F22– focus again is on the eye…notice how clear everything is, the big difference is how long the aperture stayed open to get the same picture. 

2018-11-24-PotD-002-2.jpg

Refer to the chart below to understand why.

  • graphic from asmallsnippet.com

Leave a Reply