All Questions
Tagged with aperture terminology
18
questions
19
votes
5
answers
3k
views
What are the benefits of the classic f-number scheme?
Classic ƒ numbers are entrance pupil diameter as a fraction of focal length. This seems like a slightly strange choice as exposure is proportional to area rather than diameter. Naively I would think ...
- 416
2
votes
4
answers
24k
views
What does 1:4-5.6 mean on a lens?
what does 1:4-5.6 means on the lens. Does it means that the focal length is from f4 to f5.6 only? Or does it means that it has a range from f1 to f5.6?
- 21
2
votes
4
answers
2k
views
What is the difference between "dual aperture camera" and "dual camera" on a phone?
What is the difference between a "dual aperture camera" and a "dual camera"? As far as I know, a dual aperture camera has two 2 apertures (IR sensor) and 2 cameras.
- 149
3
votes
2
answers
2k
views
How does physical aperture size relate to f/stop?
There are two lenses on the market I am comparing
AF Micro-Nikkor 60mm f/2.8D
AF-S VR Micro-Nikkor 105mm f/2.8G IF-ED
If I use the formula for calculating apertures of both the lenses I will use the ...
- 131
2
votes
2
answers
6k
views
Why refer to "aperture" as "iris"?
With common lenses the aperture is controlled by a mechanism called an "iris."
But, especially with cine/video-oriented lenses, I often see the term "iris" used as an apparent synonym for aperture. ...
- 3,603
2
votes
3
answers
3k
views
What does "maximum aperture" mean in a camera spec? Where can I get the full aperture range?
I own a Canon S95, and am considering getting a newer model (e.g. Canon S110 or S120), and I'm comparing the specs. According to DPReview.com, the S95 has a maximum aperture of F2.0-F4.9, and the S110 ...
- 635
13
votes
1
answer
11k
views
What is a "De-clicked" aperture control ring?
The Samyang 85mm T1.5 Cine Lens featured a "De-clicked" aperture control ring. What exactly is it?
- 2,298
12
votes
4
answers
15k
views
What is a "small" aperture?
It happens a lot. People refer to the aperture being small (or big!). By default does this imply a small opening of the iris (literal aperture), or a small f-value (how the aperture is measured, for ...
- 2,724
12
votes
3
answers
9k
views
Why don't comparisons of aperture take sensor size into account?
When one compares focal length, many times we use the 35mm equivalent length. A 50mm lens on an APS-C sensor camera(1.6x) would be a 80mm equiv. length on a full frame camera.
But when we state the ...
- 46.6k
6
votes
4
answers
4k
views
What are the types of aperture blades?
The Canon EF 24-105mm f/4 L USM IS lens has rounded aperture blades. What other types of aperture blades are there, and what are the advantages and disadvantages of each of them? Is the aperture ...
- 6,497
2
votes
3
answers
16k
views
What is the relationship of aperture, focal length, and ISO in a SLR?
I was using Nikon digital camera, and recently bought a Canon 550D. I am totally new to SLR.
I am not familiar with SLR terms: Aperture, focal length and ISO, and their relation to one another.
What ...
- 121
32
votes
2
answers
27k
views
What is T-number / T-stop?
Usually, when discussing aperture of a lens, F-stop and F-number are used for quantifying. But some photographers, and especially videographers, also mention T-stop. The concept and numbering used (e....
- 32k
10
votes
3
answers
2k
views
What is the technical name for a zoom lens which has a fixed maximum aperture?
What is the technical name for a lens which has the same maximum aperture throughout the entire zoom range?
- 5,612
26
votes
4
answers
6k
views
What is a "fast" lens?
I've been reading lots of camera reviews lately and have ran across several references to "fast" lenses.
What exactly is a fast lens and what are its advantages compared to other lenses?
- 363
23
votes
7
answers
14k
views
How can aperture be f/11 on a lens with an aperture range designation of 3.5-5.6?
I made a series of outdoor shots with Nikon D5000, with the 18-55mm 1:3.5-5.6G VR kit lens.
On some shots, I see in the EXIF info f/11, and in another shot, f/9.
How can that be, that the f-number ...
- 1,097
Hot Network Questions
- 8x8 grid with no unmarked L-pentomino
- If Biden steps back or is replaced, until when must he do it?
- Generalized Bernoulli numbers
- What is this rectangular SMD part with a stripe along one of the long edges?
- Is it possible to understand in simple terms what a Symplectic Structure is?
- What caused the builder to change plans midstream on this 1905 library in New England?
- LCR Meter U1733C "rn" Symbol Meaning
- How can I watch a timelapse movie on the Nikon D7100?
- Why is QR considered a problem for disc rotor alignment and not rim brake alignment?
- Where can I find a complete archive of audio recordings of Hitler speeches?
- Equivalence of first/second choice with naive probability - I don't buy it
- How can I search File Explorer for files only (i.e. exclude folders) in Windows 10?
- Can I self-plagiarise a part of a previous paper?
- Can I include a variable related to the outcome variable into statistical analysis?
- Why does Google Maps only rotate 90º but not 180º when I rotate my iPhone?
- Is "sinnate" a word? What does it mean?
- Reproducing Ruth Vollmer's acrylic Steiner surface
- Looking for the title of a short story for my students to read about a woman searching for the last man alive
- Can computer components be damaged if they stay off for a long time?
- pkh() nested in tr() is allowed?
- Big zeros in block diagonal matrix
- Story Identification : student gets perfect score, fake helicopter plans, Bob Dylan song
- How does a country without exit immigration check know you have overstayed?
- How is 11:22 four minutes slow if it's actually 11:29?