- Review of Sept 12 Session
- Composition rules and examples.
- Submissions review.
- Depth of Field – Aperture preference setting – Distance to subject.
- Indoor and (weather permitting) Outdoor Practice.
I have been away for a couple of days on two photoshoots to capture the fall colours before they disappear. ( I will post my pictures under photography outings later this weekend). Here are some of the slides I showed during the Depth of Field session last Tuesday September 26th sorry for the delay.
Here is the link to an easy Depth of Field and Hyperfocal distance calculator. http://www.cambridgeincolour.com/tutorials/dof-calculator.htm Note: Go to the “Advanced” mode to get the Hyperfocal distance.
Here is a quick lookup table for Canon Cameras with APS-C sensors (1.6 crop factor)
It is really simple, know what lens you have on your camera. If it is a zoom lens, read off the focal length setting. Check what f stop you have selected. (I am assuming you are using “Aperture Preference” or are on “Manual”) Read off the Hyperfocal Distance from the chart where the vertical and the horizontal meet, then take the same number of (large) paces as is indicated in meters. Turn around focus on your subject (in our case that was Gertrude) and take your picture. Both your subject and the skyline should be sharp. Of course you can take a few extra steps to make absolutely sure. If the space is tight, go to the next f stop. Go from f/8 to f/16 or f/22, that way you can be closer to the subject and still have everything sharp.
Thanks for attending everyone. The page is now open for submissions.
Try out your camera on Aperture Preference or Priority, “A” on most cameras or “Av” on Canon cameras. Try opening your aperture to the maximum your camera lens allows. At home try taking pictures of an object such as a vase on your table an move as close as possible while still keeping the object in focus. See if you can “isolate” the object from the background. If you can figure it out from the camera manual, set your ISO (sensor sensitivity) to automatic. This way, all you have to do is pay attention to the aperture, and keeping your subject in focus. The camera will figure out shutter speed and ISO setting for you. If you want to try an easy Depth of Field Calculator, click here.
Here is my example. A vase on a coffee table in front of a loveseat. In this shot the camera is about 40 cm away from the focus point, a pouch of knitting needles leaning against a glass vase. The couch cushion is about 90 cm from the vase. The zoom lens is set at 35 mm and the aperture at maximum f/4.5. ISO (sensor sensitivity) is on automatic.
Below the second picture with the same camera settings, focused on the knitting needles but I have now moved further back, and am 70 cm from the knitting needles.
As you can see this has a dramatic effect on the sharpness of the background cushion.
Give it a try at home, and post your results. Remember no more than 800 pixels wide.