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Questions about specific terms used within photography

learn more… | top users | synonyms (1)

4
votes
2answers
621 views

What is this dead pixel problem really called?

On all photos from my last vacation I see this red point. It appears on in-camera JPGs as well as on RAW files. A see a red pixel in the same position on all pictures. How is this problem called? Is ...
18
votes
4answers
556 views

Is there construction-agnostic term for a lens with a long focal length?

Turns out that telephoto refers to a specific construction of a long-focal-length lens, i.e., one where the lens is physically shorter than the focal length. Is there a generic term for referring to ...
10
votes
1answer
2k views

What is the difference between active and passive fill light?

What is the difference between an active and a passive fill light? I have an assignment that states to "use active or passive fill light" in a picture, but I need some clarification to understand what ...
4
votes
2answers
374 views

What does 'freedom of color from white or gray' mean?

The dictionary entry for the word chroma says, "the purity of a color, or its freedom from white or gray." What does that statement mean? What is color made of? What causes color? I was reading this ...
7
votes
6answers
2k views
10
votes
1answer
3k 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?
14
votes
3answers
2k views

What does “Strobist” in Photography mean?

I often come across this term "Strobist" in Macro Photography and other equipment related to it. What does Strobist actually mean?
18
votes
4answers
1k views

What is ISO and how does it affect my photos

What is the ISO setting on my camera? What does it represent? What should I be aware of with regards to ISO when taking photographs
7
votes
2answers
304 views

At what point does “out of focus” become Bokeh?

As with the distinction between a big boat and a small ship, at what point can an out of focus background be considered "Bokeh"? Is it the point where the subject in the background (or foreground ...
8
votes
2answers
3k views

What does it mean to shoot in flat colors?

I read somewhere that you should shoot in "flat colors" to make it easy to work in post-production. What does "flat" mean?
2
votes
3answers
225 views

Subject out of center — what is correct term?

Composition which consists of placing the topic or main subject to the side and never in center of the picture: does that technique have a name?
8
votes
1answer
2k views

When is HDR preferred to Active D-Lighting?

Could someone please explain the difference between the two? Are there cases where the one technique is more preferable over the other or a general rule of thumb?
8
votes
2answers
17k views

What does the expression “V+F” (or “V&F”) mean on a photography web site?

I was reading comments on my photos posted at 500px.com (for example, at http://500px.com/photo/21988337 and http://500px.com/photo/21997241). Read a few comments that say V+F or V&F, what are ...
2
votes
1answer
769 views

Is it wrong to call the image plane the focal plane?

I'm from France and I would ask a question on a point that I don't understand, as it seems that so many people confuse (or may be I'm wrong). On the camera, there is a symbol (a theta or phi) which ...
17
votes
3answers
2k views

What makes a camera an “SLR”?

My question, specifically: why is the Fujifilm HS 10 not an SLR?
17
votes
5answers
3k 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 ...
3
votes
1answer
179 views

What is Effective Aperture?

What is Effective Aperture? And how it can affect my exposure? Also how does it relate to magnification? A question that talks about effective aperture but without details
2
votes
2answers
6k views

What is the difference between depth of field and focal plane?

I would like to know how to address the difference between them and how relates to each other.
3
votes
1answer
668 views

What is the meaning of the letters “O.M.P.” for Canon lenses?

What do the cryptic letters "o.m.p." mean for a Canon lens? For example, EF 24-105mm f/4L IS USM O.M.P."
-1
votes
1answer
55 views

ACR terminology

Can someone recommend a guide (or a sensical glossary) that would pull together all the terminology used in the Adobe Camera Raw, preferably by tab (Basic, Tone Curve, Detail, etc.), with all the ...
2
votes
1answer
300 views

What is the name of a tripod feature that adjusts level automatically?

I am looking for my first tripod and just learning terminology. I hear there are such that level automatically, but I am not sure how to google them. What is this feature called with different brands? ...
2
votes
2answers
749 views

What is difference between tonal contrast and just contrast?

What is difference between tonal contrast and just contrast? Usually the editor programs will have a contrast slider while the "special" plugins of these software will have tonal contrast. Is tonal ...
6
votes
1answer
1k views

What is the meaning of “Blue Hour” and its differences from “Golden Hour?”

What does "Blue Hour" exactly mean? What time in the day can I capture this "Blue Hour" and how long is it? Also, what are its differences from the "Golden Hour"?
1
vote
0answers
71 views

Why do people tend write “RAW” instead of “raw”? [duplicate]

Given that in the English language using all-caps means that the word is an acronyms or initialism (e.g., NASA, RCMP), "RAW" doesn't make much sense--unless there's some longer term that "RAW" stands ...
2
votes
3answers
11k views

What does infinity focus mean and when should I use it?

All my lens have focus ring where at the end there's an infinity symbol. What does that mean? If I'm taking landscape shot and what everything from near to far to be in focus, do I use infinity? Or am ...
9
votes
3answers
563 views

What do you call the technique for removing uninteresting parts of photo by combining two images?

I'm looking for the name of a technique to cut out an "uninteresting" part of a photograph. The example I'm thinking of is of a guy on the left of a photograph and a tower on the right. The middle ...
1
vote
1answer
443 views

What is it called when a series of photos taken over a few days is made into a video clip?

I saw this on a National Geographic programs when they had recorded the sky for a few days and then make a few seconds long clip from it. What is this called?
5
votes
3answers
773 views

What does it mean that a lens is x millimeters?

Every lens has different focal length in terms of millimeter so if I have a 100mm lens, what does that refer to? Does it mean the length of the lens itself is going to be 4 inches long, or does this ...
12
votes
7answers
1k views

Can someone give a simple explanation of ISO?

Can someone please explain to me what ISO means in the camera settings. In an answer to a question about taking pictures at a dance party, I was told to use ISO 1600. What does that number really ...
16
votes
2answers
10k views

What is the difference between luminance and illuminance?

The more I read about this, the more confused I become. Illuminance, as I understand it, measured in lux, is the perceived brightness of light on a surface. It's what you'd measure with an incident ...
6
votes
2answers
600 views

What is bracketing?

I have seen this term a lot and I was wondering what, in basic terms, what bracketing/autobracketing is. Also, why would one want to 'bracket'? P.S. - there are other questions asking what DoF and ...
7
votes
1answer
586 views

What is Colour Rendering Index (CRI)?

From this answer on white balancing a LED light I understood there's a thing called Colour Rendering Index (CRI). I understand it has something to do with how well lights reproduce the sun's colour ...
4
votes
5answers
5k views

What's the difference between exposure and shutter speed?

Is there a difference between exposure and shutter speed, or are the terms interchangeable? I read that "If you use a quick shutter speed, you can just raise the exposure to compensate." Is this ...
5
votes
2answers
581 views

What is term for the opposite of “Dragging the Shutter”?

My first helpful experiments with flash started after taking a seminar with Scott Kelby on the subject. I don't recall him mentioning dragging the shutter (but he may have). But, I do recall him ...
6
votes
3answers
12k views

What does “the telephoto end” and “the wide angle end” of a zoom lens mean?

In the Canon Rebel T3i Manual, page 59, it's mentioned that "If you have a zoom lens, use the telephoto end to fill the frame with the subject from the waist up." Same note on page 61 and another one ...
7
votes
4answers
5k views

What does IQ mean?

I see a lot of questions which mention IQ. The only meaning I know outside photography is "intelligence quotient" but obviously IQ has some other meaning here. IQ is used for example in "Lens with ...
9
votes
2answers
1k views

What does “workflow” mean?

I keep seeing the term "workflow" in relation to post-processing being used here and on other sites. What does it actually mean though? To me it sounds like it means you do A, then B, then C every ...
5
votes
5answers
768 views

What is it called when multiple photos are adjusted for further blending?

I have taken a series of noisy photos without a tripod. I want one less noisy version, so I need average them down to one photo. But details of the individual images do not exactly match, so that ...
7
votes
2answers
9k views

What is CLA service?

I've seen the term used in used lens listings, e.g "recently CLA'd". I have a few questions, but I think they're related enough to only warrant one post: What does CLA stand for, and what is it? ...
12
votes
4answers
2k views

Why is sensor sensitivity called “ISO”?

I was curious to know how the term "ISO" was coined for referring the image sensor's sensitivity. Is there any reason or circumstance that contributed for terming "ISO"? Also, does ISO has a literal ...
0
votes
1answer
8k views

What does ISO stand for? [duplicate]

I've recently been learning how to use a camera, and was wondering what ISO stood for?
7
votes
2answers
274 views

What does it mean to excite aliases?

I recently came across the phrase 'excited aliases.' The phrase seems to be related to lens sharpness in some way. While a web search turns up the phrase a few times, I am unable to locate a decent ...
4
votes
2answers
4k views

What is the difference between a “slave flash” and “master flash”?

My Nissin Di866 II flashgun supports operation in both "slave flash" and "master flash" mode. The former I know needs to be used with a Nikon DSLR's "Flash Commmander" mode. What's the latter mode? ...
9
votes
2answers
4k views

What is a vertorama and is it really different from a panorama?

Is "vertorama" a real photography term, or is it simply something that people use to describe a vertical panorama? I never thought that panorama was limited to horizontal landscape oriented images, ...
5
votes
2answers
4k views

What does “Flat Field Focus” mean?

Looking at lenses, specifically sigma macro lenses, I noticed that it had a ""Flat Field" front lens element". What does this mean? And how is it different to the norm?
8
votes
3answers
1k views

How can a 24-70mm and a 10-22mm both be “wide angle” lenses?

I've been looking at a 10-22mm lens for my Canon T2i. I've also come across some other "wide angle" lenses, like the Sigma 24-70mm F2.8. I don't understand how a wide angle lens can have such high ...
3
votes
2answers
1k views

Nikon Lenses: what is the difference between Micro/Macro vs non-Micro/Macro of the same focal length? [duplicate]

Possible Duplicate: What is a macro lens? What is the difference between a Nikon “Micro” lens and a “Macro” lens? I know what macro photography is, but what makes a macro (or in Nikon's ...
11
votes
2answers
795 views

What does the term “sneaker zoom” mean?

I saw the term used when describing the Canon 85mm f/1.8. What do they mean?
4
votes
2answers
576 views

What does the term “saturation luminance” mean in the definition of dynamic range?

The concept behind the dynamic range definition given by ISO 15739 is based on the ratio of the maximum luminance that receives a unique coded representation (the "saturation" luminance) to the lowest ...
13
votes
2answers
3k views

Retrofocus lens? What's that?

I saw that in Why do some people prefer 50mm to 35mm prime lenses? , in @MattGrum's answer: ... The 50mm is a simpler design compared to the retrofocus 35mm ... What's retrofocus?