All Questions
3 questions
0
votes
3
answers
731
views
Understanding Entrance Pupil
let's consider a simple lens without diaphragm.
For a lens like this, the book Science for Curious Photographer states that:
The important fact is that the illumination of the image is proportional ...
- 514
0
votes
3
answers
124
views
What techniques do higher-end lenses use to reduce astigmatism at high apertures?
I own a few lenses with a maximum aperture of f/2.8. For this question, I'll focus on two specifically:
A Rokinon 14mm f/2.8, which retails around the $500 CAD mark; and
A Sigma 24-70 f/2.8, which ...
- 145
3
votes
1
answer
6k
views
What is an electromagnetic diaphragm?
What is an electromagnetic diaphragm, how it works, and how is it different with regular diaphragms?
A specialized electromagnetic diaphragm mechanism operates in precise sync with the camera's ...
- 2,203
Hot Network Questions
- How to write a function in LATEX whose value is different in [0,1/3), [1/3,1/2) ...?
- Learning Sitecore, how to structure Treelist data templates in Sitecore?
- How to identify an expletive / "dummy it" when sentence diagramming?
- Why did Crimea’s parliament agree to join Ukraine in 1991?
- In a matroid does every singleton appear in a base?
- What is the purpose of `enum class` with a specified underlying type, but no enumerators?
- What does it mean when folks say that universe is not "Locally real"?
- How can we be sure that the effects of gravity travel at most at the speed of light
- reverse engineering wire protocol
- Are pigs effective intermediate hosts of new viruses, due to being susceptible to human and avian influenza viruses?
- How to balance authorship roles when my contributions are substantial but I am evaluated on last authorship?
- Can we evaluate claims reliably and with a high degree of consensus without empirical evidence?
- A cartoon about a man who uses a magic flute to save a town from an invasion of rats, and later uses that flute to kidnap the children
- How can Rupert Murdoch be having a problem changing the beneficiaries of his trust?
- Why does it take so long to stop the rotor of a helicopter after landing?
- The coherence of physicalism: are there any solutions to Hempel's dilemma?
- How defensible is it to attribute "Sinim" in Isa 49:12 to China?
- A website asks you to enter a Microsoft/Google/Facebook password. How do you know it is safe?
- What's the safest way to improve upon an existing network cable running next to AC power in underground PVC conduit?
- Humans try to help aliens deactivate their defensive barrier
- What are these 16-Century Italian monetary symbols?
- How to achieve infinite rage?
- What's a modern term for sucker or sap?
- Can two wrongs ever make a right?