Advanced Guide to Depth of Field
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Description
Experience Level: Expert
Need the following written guide.
The guide sets out to explain and demonstrate how the aperture, focal length, focusing point and subject distance affect depth of field in different types of photography. For the purposes of this guide those types will be: close-up or macro (including product photography), portraiture for single and multiple subjects and landscapes (all settings).
What is depth of field?
Why does depth of field matter?
What affects the depth of field of a photographic subject – lens aperture, focus point, focal length, sensor size, distance of subject to focal plane.
Why do we measure depth of field from focal plane and not the end of the lens?
Circle of confusion – what is it and why does it matter?
How to control the depth of field.
What factors contribute to the depth of field in a photograph?
What are the issues achieving the desired depth of field raise – optics performance (lens 'sweet' spot), lens diffraction, increase in exposure time.
Is the depth of field the same for all types of lens?
How the lens focal length and format affects depth of field and why. How the size of the camera's sensor affects the depth of field and why. Build in the DOF advantage of full frame vs cropped sensors. Include information on how the student can understand any issues in this respect that may affect their approach to manage the depth of field in the field.
Hyper-focal distance and hyper-focal focusing – the technical explanation. But – I also want 'real life' solutions for calculating this factor in ways that doesn't involve the student getting bogged down in numbers and complex equations – rule of thumb tips plus a look at at least one smartphone DOF app – and how to use it – DOF Master, for example. Why might I need to use the hyper-focal distance – when my photo has a subject/element in the near foreground that I also want in focus along with the rest of the scene further in.
How to use depth of field creatively – front to back sharpness and shallow depth of field – i.e. using depth of field as a way to alter the composition.
Using Live View to check the depth of field before pressing the shutter button. How to do this on Canon and Nikon SLRs.
Using Live View and focus peaking to get precision in placing the focus point when accurate depth of field is vital to the image you want to take.
Three case studies with photographic examples covering three very different types of photograph – each with its own depth of field considerations.
1. Portraiture
2. Landscape
3 Close-up/macro also encompassing general product photography – subjects generally within a metre of the lens.
Include information on how to focus stack to get maximum depth of field in macro subjects.
ABOUT YOU:
You must be able to show some examples of your writing work
You must be an expert in the photography field and fully understand all the above topics
I have put a ballpark figure down but we will pay extra to the tune of 5p per word (£50 per 1000 words).
The guide sets out to explain and demonstrate how the aperture, focal length, focusing point and subject distance affect depth of field in different types of photography. For the purposes of this guide those types will be: close-up or macro (including product photography), portraiture for single and multiple subjects and landscapes (all settings).
What is depth of field?
Why does depth of field matter?
What affects the depth of field of a photographic subject – lens aperture, focus point, focal length, sensor size, distance of subject to focal plane.
Why do we measure depth of field from focal plane and not the end of the lens?
Circle of confusion – what is it and why does it matter?
How to control the depth of field.
What factors contribute to the depth of field in a photograph?
What are the issues achieving the desired depth of field raise – optics performance (lens 'sweet' spot), lens diffraction, increase in exposure time.
Is the depth of field the same for all types of lens?
How the lens focal length and format affects depth of field and why. How the size of the camera's sensor affects the depth of field and why. Build in the DOF advantage of full frame vs cropped sensors. Include information on how the student can understand any issues in this respect that may affect their approach to manage the depth of field in the field.
Hyper-focal distance and hyper-focal focusing – the technical explanation. But – I also want 'real life' solutions for calculating this factor in ways that doesn't involve the student getting bogged down in numbers and complex equations – rule of thumb tips plus a look at at least one smartphone DOF app – and how to use it – DOF Master, for example. Why might I need to use the hyper-focal distance – when my photo has a subject/element in the near foreground that I also want in focus along with the rest of the scene further in.
How to use depth of field creatively – front to back sharpness and shallow depth of field – i.e. using depth of field as a way to alter the composition.
Using Live View to check the depth of field before pressing the shutter button. How to do this on Canon and Nikon SLRs.
Using Live View and focus peaking to get precision in placing the focus point when accurate depth of field is vital to the image you want to take.
Three case studies with photographic examples covering three very different types of photograph – each with its own depth of field considerations.
1. Portraiture
2. Landscape
3 Close-up/macro also encompassing general product photography – subjects generally within a metre of the lens.
Include information on how to focus stack to get maximum depth of field in macro subjects.
ABOUT YOU:
You must be able to show some examples of your writing work
You must be an expert in the photography field and fully understand all the above topics
I have put a ballpark figure down but we will pay extra to the tune of 5p per word (£50 per 1000 words).
J M.
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