The Vale
  • Home
  • About
  • Programme
  • Gallery
    • Gallery A - E >
      • David Allen
      • Keith Baker
      • Mike Baker
      • Guy Butler-Madden
      • Bridget Craddock
      • Nick Craddock
      • Mike Davies
      • Patrick Davies
      • Peter Dennis
      • Tom Dunlop
      • Raymond Evans
    • Gallery F - L >
      • Gerald Harbour
      • Gwynne Harries
      • Dave Hartwick
      • Michael Hunt
      • Gareth Impey
      • Cledwyn Lewis
      • Pam Lewis
      • Alison Love
    • Gallery M - Z >
      • Suzanne McIntosh
      • Jaydie O'Garro
      • Geoff Poole
      • Alan Roberts
      • Tony Tarlton
      • Nick Thornton
      • Terry Verrinder
      • Jim Wild
      • Gareth Williams
    • Gallery Image Upload
  • Members
  • Zoom
    • Dodge & Burn
    • Audio Visuals
  • Comps
    • PDI Upload for Comps
    • 2020 Comp 1
    • 2020 Comp 2
    • 2020 Comp 3
    • 2021 Comp 4
    • 2021 Comp 5
    • The Vale 7- Way Battle 2021
    • Lockdown Challenge >
      • 12 - Self Portrait
      • 11 - Open the Box
      • 10 - Simplicity
      • 9 - What's in the Fridge
      • 8 - Chocolate
      • 7 - Decay
      • 6 - Negative Space
      • 5 - Plant Life
      • 4 - Glass
      • 3 Something Old
      • 2 The Colour Red
      • 1 Breakfast
    • Three in Harmony
  • Exhibitions
  • Contact
  • Map
  • FAQ
  • Members Only
    • Getting Composition into Shape
    • Stuck in Lockdown - Ideas
    • JPG v RAW
    • New Member Info
    • Back Button Focussing
    • Andy's Photoshop Tutorial
    • Depth of Field & Foreshortening
    • Homemade Lens Hood
    • Teaching Grandma to Suck Eggs
    • Lighting on a Budget
    • Lighting for Portraits
  • More for Members Only
    • Image Sharpness
    • Eliminating Camera Shake
    • Mounting Prints
    • Adding Text to an Image
    • Resolution Explained
    • Critique Guide
    • Removing Colour Casts
  • Special Interests
    • Studio Style Lighting
    • Photo Locations
  • Links
  • Collaborations
    • CADS- Pack Up Your Troubles
    • It can Damage your Health
    • CADS- Deckchairs
  • Constitution
  • Image Development Exercise
  • VPC Zoom Meeting
  • Halloween Challenge
  • Something Completely Different
  • Mike's Memories of 2020

The effect of using different lenses on depth of field and foreshortening  - Ed Cloutman

Picture
Depth of field is the amount of an object that is in-focus at various f-stops.  This is particularly relevant in close-up photography where quite often it is necessary to use f22, or f32 to ensure all of an object is in focus.

The first two images show a section through a lens and the effect that changing the aperture (altering the size of the hole in the diaphragm) has on depth of field.  Note how using a small hole (f32) increases the distance from the front to the back of an object that is in focus.

In the following 20 images you will see the effects of using different lenses at varying aperture settings (f-stops).  In each of the images, the camera has been focused on the orange.  You will notice that when the lens is fully open (f2.8), the cottage in the background is well out-of-focus.  As the lens diaphragm is closed, making the hole smaller (f22), so the background comes more into focus.  Note also that the background comes into focus sooner with a wide-angle lens than with the telephoto.  In practise, if you want the background in focus, you should focus the camera on an object about one third the distance in, from the foreground object to the background.

Notice also the foreshortening effect of the telephoto lens.  In the first row of images using the 400mm lens, the orange fills the windows in the stable door.  Compare this with the bottom row, using the 28mm lens where the orange nearly covers the whole cottage.  This effect can be put to good use in composition where the background forms an important part of your image.

Picture
Picture
 Vale - The Photographic Club   About  Contact  Programme   Gallery   Comps   Exhibitions   Members Only   Map 
  • Home
  • About
  • Programme
  • Gallery
    • Gallery A - E >
      • David Allen
      • Keith Baker
      • Mike Baker
      • Guy Butler-Madden
      • Bridget Craddock
      • Nick Craddock
      • Mike Davies
      • Patrick Davies
      • Peter Dennis
      • Tom Dunlop
      • Raymond Evans
    • Gallery F - L >
      • Gerald Harbour
      • Gwynne Harries
      • Dave Hartwick
      • Michael Hunt
      • Gareth Impey
      • Cledwyn Lewis
      • Pam Lewis
      • Alison Love
    • Gallery M - Z >
      • Suzanne McIntosh
      • Jaydie O'Garro
      • Geoff Poole
      • Alan Roberts
      • Tony Tarlton
      • Nick Thornton
      • Terry Verrinder
      • Jim Wild
      • Gareth Williams
    • Gallery Image Upload
  • Members
  • Zoom
    • Dodge & Burn
    • Audio Visuals
  • Comps
    • PDI Upload for Comps
    • 2020 Comp 1
    • 2020 Comp 2
    • 2020 Comp 3
    • 2021 Comp 4
    • 2021 Comp 5
    • The Vale 7- Way Battle 2021
    • Lockdown Challenge >
      • 12 - Self Portrait
      • 11 - Open the Box
      • 10 - Simplicity
      • 9 - What's in the Fridge
      • 8 - Chocolate
      • 7 - Decay
      • 6 - Negative Space
      • 5 - Plant Life
      • 4 - Glass
      • 3 Something Old
      • 2 The Colour Red
      • 1 Breakfast
    • Three in Harmony
  • Exhibitions
  • Contact
  • Map
  • FAQ
  • Members Only
    • Getting Composition into Shape
    • Stuck in Lockdown - Ideas
    • JPG v RAW
    • New Member Info
    • Back Button Focussing
    • Andy's Photoshop Tutorial
    • Depth of Field & Foreshortening
    • Homemade Lens Hood
    • Teaching Grandma to Suck Eggs
    • Lighting on a Budget
    • Lighting for Portraits
  • More for Members Only
    • Image Sharpness
    • Eliminating Camera Shake
    • Mounting Prints
    • Adding Text to an Image
    • Resolution Explained
    • Critique Guide
    • Removing Colour Casts
  • Special Interests
    • Studio Style Lighting
    • Photo Locations
  • Links
  • Collaborations
    • CADS- Pack Up Your Troubles
    • It can Damage your Health
    • CADS- Deckchairs
  • Constitution
  • Image Development Exercise
  • VPC Zoom Meeting
  • Halloween Challenge
  • Something Completely Different
  • Mike's Memories of 2020