Canon Lens Work III
If you are even slightly interested in photography, its physics, then do not switch - it will be interesting :-)
I have long wanted to write about the wonderful book Canon Lens Work III (September 2006, 8th edition), but somehow I didn’t reach it. And when I sat down to write, I learned that ukrainets had already written in his blog , but it was very superficial - I left only the links :-)
I am sure that a couple of its chapters will be interesting to anyone for whom photography is more than charging batteries and setting automatic settings.
')
The following sections are recommended for reading:
Here I will make a brief description of the most interesting, in my opinion, parts, in order to interest you somehow. It was pleasant and interesting for me to “find myself” again in school in a physics lesson, because it is really explained here in great detail and clearly. Text (with abbreviations) and pictures from this chapter.
Light is a physical phenomenon, causing the creation of visual images through the excitation of the optic nerves; In the broad sense of the word, light can be defined as one of the types of electromagnetic waves.
The lens aperture is connected with the diameter of a group of light rays passing through the lens, and determines the brightness of the image of an object formed in the focal plane.
The optical axis is a straight line connecting the central points of the spherical surfaces on each side of the lens.
The main beam is a light beam that enters the lens at a certain angle at a point other than the point of the optical axis and passes through the center of the aperture.
Depth of field is the area in front of and behind the object in which the photographic image looks sharp when focused on the object.
The depth of focus is the area in front of and behind the focal plane in which you can get a sharp image when photographing.
The book also gives tips on how to choose the right lens. I did not come across Nikon's Nokkors, but I suppose that the selection criteria should be similar.
All documents are freely available in Russian , English and another 5 languages on the Canon website. Below are direct links to the Russian edition (the files for compulsory review are in bold ):
EF Lens Concept (PDF, 1.2 MB)
Canon Achievements (PDF, 3.7 MB)
The world of EF lenses (fixed focal length lenses) (PDF, 7.8 MB)
World of EF lenses (zoom lenses) (PDF, 4.6 MB)
World of EF lenses (EF-S lenses) (PDF, 1.3 MB)
Accessories for EF lenses (PDF, 1.6 MB)
Interchangeable lens overview and EF lens selection for digital photography (PDF, 3.7 MB)
Photography Technique (PDF, 3.9 MB)
EF Lens Technology (PDF, 2.2 MB)
Optical terminology (PDF, 1 MB)
EF Lens Specifications (PDF, 1.5 MB)
All 11 files in one archive - Canon EF Lens Work III_RU (RAR, 28.4 MB)
And please, no Canon vs. Holivar. Nikon - the post is not about that.
Thank you for your attention and do not stop there!
Introduction
I have long wanted to write about the wonderful book Canon Lens Work III (September 2006, 8th edition), but somehow I didn’t reach it. And when I sat down to write, I learned that ukrainets had already written in his blog , but it was very superficial - I left only the links :-)
I am sure that a couple of its chapters will be interesting to anyone for whom photography is more than charging batteries and setting automatic settings.
')
The following sections are recommended for reading:
- Interlaced lenses overview - focal lengths, perspective, depth of field
- Photography techniques - portraits, macro photography, landscape, underwater photography, wildlife
- Optical terminology - the physics of light
Preview - Optical Terminology
Here I will make a brief description of the most interesting, in my opinion, parts, in order to interest you somehow. It was pleasant and interesting for me to “find myself” again in school in a physics lesson, because it is really explained here in great detail and clearly. Text (with abbreviations) and pictures from this chapter.
What is "light"
Light is a physical phenomenon, causing the creation of visual images through the excitation of the optic nerves; In the broad sense of the word, light can be defined as one of the types of electromagnetic waves.
Optical terms related to the passage of light through the lens
The lens aperture is connected with the diameter of a group of light rays passing through the lens, and determines the brightness of the image of an object formed in the focal plane.
The optical axis is a straight line connecting the central points of the spherical surfaces on each side of the lens.
The main beam is a light beam that enters the lens at a certain angle at a point other than the point of the optical axis and passes through the center of the aperture.
Depth of field and depth of focus
Depth of field is the area in front of and behind the object in which the photographic image looks sharp when focused on the object.
The depth of focus is the area in front of and behind the focal plane in which you can get a sharp image when photographing.
Lens aberration
The book also gives tips on how to choose the right lens. I did not come across Nikon's Nokkors, but I suppose that the selection criteria should be similar.
Conclusion
All documents are freely available in Russian , English and another 5 languages on the Canon website. Below are direct links to the Russian edition (the files for compulsory review are in bold ):
EF Lens Concept (PDF, 1.2 MB)
Canon Achievements (PDF, 3.7 MB)
The world of EF lenses (fixed focal length lenses) (PDF, 7.8 MB)
World of EF lenses (zoom lenses) (PDF, 4.6 MB)
World of EF lenses (EF-S lenses) (PDF, 1.3 MB)
Accessories for EF lenses (PDF, 1.6 MB)
Interchangeable lens overview and EF lens selection for digital photography (PDF, 3.7 MB)
Photography Technique (PDF, 3.9 MB)
EF Lens Technology (PDF, 2.2 MB)
Optical terminology (PDF, 1 MB)
EF Lens Specifications (PDF, 1.5 MB)
All 11 files in one archive - Canon EF Lens Work III_RU (RAR, 28.4 MB)
And please, no Canon vs. Holivar. Nikon - the post is not about that.
Thank you for your attention and do not stop there!
Source: https://habr.com/ru/post/37238/
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