DSLR simulator App for photography instructors & students
  https://apps.apple.com/us/app/camerasim/id490143473
  https://download.cnet.com/CameraSim/3000-20414_4-77468144.html
  
  We use DSLR simulator App to demo the effects of Aperture 
  and the effects of Shutter Speed for control of how images 
  are rendered. 
  
  
  Effects of Aperture
    http://www.exposureguide.com/focusing-basics.htm
    Manipulation of depth of field is a good way to modify
    the characteristics of your photo, and manipulating the
    aperture is the ideal way to do this because it has
    little or no effect on composition. You simply need to
    change the shutter speed (or change the light
    sensitivity, ISO setting) to compensate for the changes
    in the exposure from the adjustments to the f-number.
    Changes in distance and focal length also affect DOF, but
    these changes have trade-offs in terms of composition.
    
  Understanding aperture -- and how it can help your photography 
    http://www.digital-photography-tips.net/aperture.html
    "Photographers know that one of the characteristics that
    separates photographic imaging from drawing or painting
    is the matter of focus".
    "The lens introduces an opportunity for selectivity in
    image-making, portraying objects in the near field and
    background with a special kind of de-emphasis: out of
    focus. Observant photographers have noticed that not all
    lenses are created equal: large aperture lenses show
    strong out-of-focus effects while small-aperture lenses
    lead simply to a softening of the image. And even among
    lenses of equal focal length and aperture, there are
    differences. The Japanese apparently refer to the quality
    of the out-of-focus image as 'bokeh'. What is bokeh, and
    why are lenses different from one another"?
  Effects of Shutter Speed
    Introduction to Shutter Speed in Digital Photography
      http://www.digital-photography-school.com/shutter-speed
    Back to Basics - Shutter Speed
      http://www.diyphotography.net/shutter-speed
    
  Manual, Aperture and Shutter Priority modes explained
    http://digital-photography-school.com/getting-off-auto-manual-aperture-and-shutter-priority-modes-explained/
  
  How to See an Image's EXIF Data in Windows and macOS
    https://www.howtogeek.com/289712/how-to-see-an-images-exif-data-in-windows-and-macos/
 
 
  
Exposure Compensation (for automated exposure modes)
  http://www.cs.mtu.edu/~shene/DigiCam/User-Guide/995/EXPOSURE/EV-compensation.html
  http://www.shortcourses.com/use/using3-4.html
  
  Cameras allow the user to conveniently adjust the exposure
  to over or under expose in increments of 1/3 stop up to plus
  or minus who stops.
  -2 -1  0 +1 +2   Over exposing by +1 stop might be just right
   |..|..|..|..|   photographing a bright scene as the one above.
            ^
  The snow scene above is typical of scenes that are lighter
  than 18 percent gray. Most of the important tones in the
  scene are at the lighter end of the gray scale. The overall
  "average" tone would be about one stop brighter than middle
  gray. For a good picture you have to increase the exposure
  by one stop (+1) to lighten it. If you didn't do this, the
  snow in the scene would appear too gray (bottom).
Using the Focus/Exposure Lock
  Many digital cameras are set to default to focus continually
  or have another focus mode that causes the camera to
  automatically select the main area that will be focused in a
  scene. These modes can be unreliable, resulting in poorly
  focused, soft looking images.
  For optimal results for the vast majority of scenes, switch
  to a single or center area focus mode and lock focus where
  you want it. Also make sure to set the diopter setting so
  that lines, boxes and information in the viewfinder is
  sharp.
  When pressing the shutter button half way, the camera comes
  alive--determining where to focus and determining what
  combinations shutter speed, aperture and sometimes ISO
  setting to give a proper exposure.
  Many times you want to focus on a subject that not in the
  center of the image.
         
  When the subject you want to expose (or focus) correctly is
  off-center, you can lock exposure (and focus) by pressing
  the shutter button halfway down and then, without releasing
  the shutter button, recompose the image.
TO REALLY CHALLEGE YOURSELF -- SHOOT IN MANUAL (M) EXPOSURE MODE.
Master Your DSLR Camera, Part 2: Manual Mode and More
  https://lifehacker.com/328488/master-your-dslr-camera-part-2-manual-mode-and-more
  
Photo Assignment - Master Manual Focus and Focus Lock
  In addition to creating compelling images of fall colors,
  winter bareness, new spring growth, or anything else you
  choose, create images with intentional focus. You can't 
  just point and shoot. For example:
  Using critical focus, create an image that draws people to
  concentrat on what you want them to see. In the image below
  the photographer wants the eyes (not the hands) to be in
  sharp focus. Be creative. You can use focus creatively!
  
  
  
  
Basic Photography: A Set of Exercises
  http://teeksaphoto.org/Writing/BasicPhotoExercises.html
Digital Photography Tutorials
  http://www.cambridgeincolour.com/tutorials.htm
Book Recommendation
John Berger
  About Looking
  Pantheon (1980)
  ISBN: 0679736557
  As a novelist, art critic, and cultural historian, John
  Berger is a writer of dazzling eloquence and arresting
  insight whose work amounts to a subtle, powerful critique of
  the canons of our civilization. In About Looking he explores
  our role as observers to reveal new layers of meaning in
  what we see. How do the animals we look at in zoos remind us
  of a relationship between man and beast all but lost in the
  twentieth century? What is it about looking at war
  photographs that doubles their already potent violence? How
  do the nudes of Rodin betray the threats to his authority
  and potency posed by clay and flesh? And how does solitude
  inform the art of Giacometti? In asking these and other
  questions, Berger quietly -- but fundamentally -- alters the
  vision of anyone who reads his work.
  
  
 
    sam.wormley@icloud.com