Clip-a-Dee-Doo-Dah : April 10, 2008

Clip-a-Dee-Doo-Dah
Image Data
File Name: 20D_19609
Model: Canon EOS 20D
Lens: Canon EF 100mm F/2.8 USM Macro
Date: 04.09.08 10:31pm
Focal Length: 100mm (160mm)
Shutter: 1/15 s
F-Stop: F2.8
ISO: 200
Program: Aperture priority
Metering Mode: Evaluative
Flash: Off
Focus Mode: Manual focus

Clip-a-Dee-Doo-Dah

Thanks for the Like/Fave!

Comments: 0   Views: 469   You Liked/Faved This (46)   Studio
04.10.2008
« Previous | Next »

Just a hair clip here. Not much interesting to talk about...
So I'll talk about what causes most of this photo to be blurry with just a small portion in focus. It has what we photographers would refer to a shallow depth of field (DOF).

DOF is the distance in front of and beyond the subject that appears to be in focus. Although a lens can precisely focus at only one distance, the decrease in sharpness is gradual on either side of the focused distance, so that within the DOF, the unsharpness is imperceptible under normal viewing conditions.

The DOF is determined by the subject distance, the lens focal length, and the lens f-number (aperture). For a given f-number, increasing the magnification, either by moving closer to the subject or using a lens of greater focal length, decreases the DOF; decreasing magnification increases DOF. For a given subject magnification, increasing the f-number (decreasing the aperture diameter) increases the DOF; decreasing f-number decreases DOF.

All this goes into a lot more detail, but I don't have the time or space for that...

For this photo with my 100mm lens set wide open to F/2.8, sitting 8.5" from the subject, only .3mm is actually in focus!

Comments (0)

Leave a Comment






What is 4+4?
Please type the answer to this simple math question
to ensure you are a human & not a robot spammer.

Image Info
Histogram
Lens
Map
Location Map

 Recent Photos 

Blown Away
January 31, 2015
Turbo Booster
January 30, 2015
Boost Her
January 29, 2015
Her Dull
January 28, 2015
Toreador
January 27, 2015

Photos By Date

.:: View All ::.
updragdown

Last Commented

Stairbomination
  02.09.2015 10:06am
It Takes Guts
  02.04.2014 9:37am
Bitty Fi
  09.15.2013 7:43pm
The Incident
  08.02.2013 9:05pm
Dollar
  07.31.2013 8:47pm

Last Viewed

Browse by Tags

abstract abstrat animals architecture b&w beer clouds eyes fire flood flower flowers food football funny ice instrument landscape macro maui mirror model mountain mountains music night people plant plants reflect shadow silverware sky smoke snow sports still-life stop-motion symmetry tools transportation water wedding

Statistics

Total Images: 2588
Total Comments: 1476
Last Image:
January 31, 2015

Facebook Twitter RSS FeedSubscribe

Photoblogs
Photoblog Community
Cool Photoblogs
Photoblogs Review