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Pupillary Magnification - CoinImaging.com
- https://www.coinimaging.com/pupillary_magnification.html#:~:text=Pupillary%20magnification%20is%20just%20the%20size%20of%20the,part%2C%20only%20useful%20with%20macro%20and%20close-up%20photography.
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Pupillary Magnification - CoinImaging.com
- https://www.coinimaging.com/pupillary_magnification.html
- Pupillary magnification is just the size of the exit pupil divided by the size of the entrance pupil. This ratio is often left out of optics equations as it generally only has a mild effect on the numbers. It is also, for the most part, only useful with macro and close-up photography. The specifics of which will be discussed in later ...
Pupil Magnification? - Dyxum
- https://www.dyxum.com/dforum/pupil-magnification_topic30405.html
- Though I found this confusing: The pupil magnification of an optical system is the ratio of the diameter of the exit pupil to the diameter of the entrance pupil. I think I get it, the "entrance pupil (for a camera lens) is the inner diameter at the front of your lens barrel commonly expressed as lens "speed" and the exit pupil is the familiar ...
Pupil magnification ratios and macro lens DoF
- https://www.photo.net/discuss/threads/pupil-magnification-ratios-and-macro-lens-dof.156804/
- magnification usually is what is of most interest, anyway. That said, for a given image magnification, the DoF IS affected by the pupillary magnification, so it's important to know the pupillary magnification if you're calculating DoF. For example, at 1:1, the Canon 180 mm f/3.5 macro lens appears to have a p of about 0.5, so the DoF is 50%
Pupil Magnification versus Angle of View - Photons to Photos
- https://www.photonstophotos.net/GeneralTopics/Lenses/Pupil_Magnification_versus_Angle_of_View.htm
- Never-the-less, pupil magnification correlates with Angle of View and knowing even approximate values can be helpful in discussing optics. This chart was constructed using the detailed datasheets for over 100 Zeiss lenses: We observe that pupil magnification increases with Angle of View; retro-focal lenses (wide) can have pupil magnification ...
pupil magnification of Canon lenses — Digital Grin Photography …
- https://dgrin.com/discussion/138381/pupil-magnification-of-canon-lenses
- I just found an unusually clear explanation of DOF in general, including the implications for macro photography: ... pupil magnification, and the smaller P for some telephotos will increase DOF. The moral of the story would seem to be that to lessen the problem with this shot, use a longer macro lens, particularly if it has a lower P value. ...
Macro photography: Understanding magnification
- https://www.dpreview.com/articles/6519974919/macro-photography-understanding-magnification
- The 1:1 ratio has an important meaning for macro enthusiasts. Technically speaking, macro photography means shooting at a magnification ratio of at least 1:1. Therefore, a 'true' macro lens has the ability to produce a magnification ratio of 1:1, or higher. A small subject like this shield bug required approximately a 1:1 magnification.
Optics Primer - Angle of View and Pupil Magnification
- https://www.photonstophotos.net/GeneralTopics/Lenses/Optics_Primer/Optics_Primer_19.htm
- The 28.5 degree Angle of View works out to 85.05mm focal length for a 43.2mm image circle diameter. But the Chief Ray arrival angle at the image circle is 35.2 degrees due to pupil magnification well below unity. In fact tan (28.5 degrees / 2) / tan (35.2 degrees/ 2) = 0.81 not far from 50.48mm / 60.71mm = 0.83.
Tutorial of Telecentric Lens - University of Arizona
- https://wp.optics.arizona.edu/optomech/wp-content/uploads/sites/53/2016/10/Tutorial_Hu_Haosheng.pdf
- the front focal plane and maintain the exit pupil at infinity. In image-space telecentric system, defocus of the image plane or detector will not change the image height or magnification, which means the image-space telecentric system has changeless magnification. The concept drawing of image-space telecentric system is shown in Fig 5. Fig 5.
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