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Questions about specific terms used within photography

learn more… | top users | synonyms (1)

5
votes
2answers
75 views

What's the generic term for portable flashes (Speedlites, Speedlights etc)?

What's the generic term for portable flashes (Speedlites, Speedlights etc) to distinguish them from studio strobes and alike? Is it simply speedlight/speedlite or has that just become a generic ...
13
votes
2answers
2k views

What is color temperature and how does it affect my photography?

I have seen color temperature mentioned with regard to white balance, mixing different sources of light, etc., but I haven't come across a clear explanation of what it means to talk about the ...
16
votes
3answers
3k views

Where does the term “f-stop” come from?

Does anyone know the origins of the term?
14
votes
5answers
11k views

What is “infinity focus”?

I have been reading a bit about astrophotography and the term infinity focus keeps coming up. What is infinity focus and how do you set the camera to infinity focus?
5
votes
1answer
163 views

What is the difference between a step-up and a step-down ring?

What is the difference between a step-up and a step-down ring? I want to put a large diameter filter on a small diameter lens. Do I need a step-up ring or a step-down one?
130
votes
3answers
50k views

What do all those cryptic number and letter codes in a lens name mean?

Then looking at a lens name there is a lot of acronyms in the name describing it's features (often specific to the manufacturer). Examples, Nikon: Nikon AF-S DX 16-85mm VR f/3.5-5.6G IF-ED Nikon ...
1
vote
3answers
83 views

What is it called when two images from different locations are blended seamlessly into one?

I have compiled two images to become one. The one image is from Nova Scotia and the other in Utah. I placed the Utah image on top of the top half of the image from Nova Scotia and it looks like it's ...
20
votes
5answers
2k views

What is the distinction between a professional and amateur photographer?

I describe myself as an amateur photographer to other photographers and avoid using qualifiers like "pro" or "amateur" when talking to clients, but after reading a number of articles in Rangefinder ...
1
vote
1answer
41 views

What to label digital prints made from scanned negatives in an exhibit?

I have my first exhibit coming up but I am not sure about how to properly label my photographs. All the pictures were taken with 35 mm film, then the negatives were scanned and the images were ...
30
votes
8answers
6k views

Does a photographer take pictures or make pictures?

Most people speak of the process of photography as taking pictures. However, many serious photographers instead refer to making pictures. One might be inclined to dismiss this as jargon, but there's ...
10
votes
3answers
4k 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 ...
1
vote
2answers
60 views

Is resolution the same thing as active pixel count?

If you have a camera with resolution Y x X, then is active pixel count always the product of the resolution? Are they saying essentially the same thing?
35
votes
8answers
42k views

What is aperture, and how does it affect my photographs?

How does aperture affect my photographs? Why should I care about the aperture with which a photo was taken?
6
votes
3answers
2k views

What is the EV scale?

I have seen an "EV" (exposure value) scale that's sometimes used to express a camera's exposure settings, or scene brightness. How exactly does this scale work?
4
votes
3answers
3k views

What does “R” mean in Fujifilm's XF Fujinon lens names?

Fujifilm currently makes three lenses for their new X-Pro1 mirrorless camera system: Fujinon XF18mmF2 R Fujinon XF35mmF1.4 R Fujinon XF60mmF2.4 R Macro "Fujinon" is Fujifilm's lens division. The ...
10
votes
0answers
199 views

Is there a standard vocabulary for posing?

I've been looking for a definitive catalog of named poses. Catalogs consisting mainly of unlabeled photos are easy to come by. "1,001 Poses for the Professional Photographer," kind of thing. This ...
97
votes
7answers
8k views

What is bokeh, exactly?

I understand that "bokeh" refers to out-of-focus areas of an image — but there is obviously more to it than that. What does the term mean exactly? How well is bokeh really understood? Is it purely ...
0
votes
4answers
138 views

What is the photography term for blurred / dragged lights?

What is the photography term for blurred / dragged lights? Hare are two quick examples from my phone: Would this be considered bokeh, or does a term even exist for this?
2
votes
2answers
57 views

Why can I see beyond sRGB in CIE Chromatic Diagram

According to CIE 1931 color space chart, the sRGB gamut is what's inside the triangle: As you can see from the diagram, blue is shown outside the sRGB gamut (at about 460 nm wavelength). Knowing ...
12
votes
2answers
1k views

What exactly is “base ISO” and how do I find what is base ISO on my camera?

If I understood correctly, base ISO is in full stop steps from the lowest possible ISO setting on my camera. For example if the lowest setting on my camera is ISO 100, than the following table would ...
18
votes
5answers
12k views

What is dynamic range and how is it important in photography?

Wikipedia says that the dynamic range is the "ratio between the largest and smallest possible values of a changeable quantity". Ok, I get that. I suppose that's why HDR photos have a "high dynamic ...
7
votes
2answers
5k views

What does Time for Print (TFP) mean in practice?

I've seen the cut and dried version of what Time for Print (also called 'Trade for Print' by many) means on Wikipedia. I was wondering what it is and what it means for the photographer and model ...
9
votes
5answers
365 views

How to identify whether the available light is too harsh or too soft?

When I go out in a park what factors should I consider to determine whether the present light is too harsh or too soft?
13
votes
7answers
1k views

What makes “fine art” fine art?

I've always been shy to refer to any of my work as "fine art"... preferring instead to call it "still life". But I recently had an interesting conversation with an Art History major who said that my ...
15
votes
7answers
4k views

How do you pronounce “bokeh”?

I've had a lot of trouble working out how to pronounce "bokeh". Amusingly enough, I've thus far been unable to get any of the small handful of photographer friends I have to ever say it out loud, ...
1
vote
4answers
964 views

What exactly is focal length when there is also flange focal distance?

If focal length is the measure between the rear element and the sensor then how can you have different flange focal distances? Is the focal length not literally the measure between the rear element ...
7
votes
8answers
2k views

How many pixels in a megapixel?

I am trying to find out the definition of a megapixel? Some references on the web place it at 1 million pixels, and other places say it is equal to 2^20 = 1,048,576 pixels.
6
votes
4answers
724 views

What does “DMC” mean?

I have seen "DMC" in many names of digital cameras. Is this an abbreviation? What does it mean? Some examples: Lumix DMC-TZ40 DMC-FZ200 DMC FT25
14
votes
2answers
15k views

What does DPI mean?

What does DPI mean and how does it affect images displayed on screen versus printed?
2
votes
2answers
194 views

What is a “crisp” photo?

I see the word crisp used a lot to describe photographs, but I'm not sure what it means. Sometimes it seems synonymous with sharp, but as often it's used along with sharp seemingly to indicate ...
12
votes
5answers
3k views

What is a normal lens?

I've heard people call 50mm lenses "normal lenses". For a lens to be considered normal, does it have to be exactly 50mm or is there some leeway? Does the normal focal length depend on crop factor of ...
27
votes
4answers
12k views

What is a macro lens?

I've read a few threads on here that mention some elementary descriptions of macro lenses and found some marketing fluff in the box for my Canon about them as well, but being a complete novice I was ...
19
votes
4answers
18k views

What does TTL mean?

I'm new to photography and I see the term TTL all over the place. What does it mean? And how do I use it to make my pictures better?
8
votes
2answers
1k views

What is “solid angle” and how does it relate to photography?

So, I was hanging out in the chat room, and hear mention of something called "Solid Angle". What is this, and how can it be important?
4
votes
8answers
1k views

What is Snapsort's true resolution?

On Snapsort I found this explanation: True resolution Manufacturers advertise high megapixels to sell their cameras, Snapsort calculates the true resolution of each camera based on the ...
11
votes
4answers
2k views

Why is it called ISO “speed”?

As I understand it, the ISO value indicates how sensitive the sensor/film is to light. How is this related to speed? Is it something to do with how fast old chemical film developed?
2
votes
3answers
182 views

Are the terms 'push' and 'pull' relevant/applicable to digital photography?

The terms push and pull come from the days of film processing, and there's more on that here and here, but essentially they refer to increasing or decreasing the chemical processing time to account ...
0
votes
2answers
108 views

What is CMOS in SLR camera? [duplicate]

I regularly come across this term "Dual Pixel CMOS AF" or "APS HD CMOS" when reading about cameras. So what is this CMOS term? What does it describe about the camera? Is it telling something that it ...
11
votes
6answers
17k views

What is the difference between a telephoto lens and a zoom lens?

Looking at the product page for Nikon lenses, I notice a distinction between telephoto lens and zoom lens. What is the difference between the two? Why would I want one over the other? I wiki'd ...
3
votes
2answers
107 views

Does fps relate to still photography or videography?

As a beginner, how much importance should I give to the FPS feature of a camera? How is the price of a DSLR related to the FPS? Directly or inversely? I was under the naive impression that FPS was a ...
7
votes
2answers
10k views

What does “Tone” mean?

I hear "Tone", "Tonal scale/range" in the context of photography. What does it actually mean?
8
votes
3answers
11k views

What is the definition of portrait photography?

Can we talk about a portrait photograph if, let's say, a grandmother and her 3-year-old grandchild are in the picture? Or, must it be only one person in the photograph?
2
votes
2answers
83 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. ...
30
votes
3answers
15k views

What does the number of elements and groups in a lens mean?

All lens specifications include a statement of how many elements the lens contains, and in how many groups, for example: Nikon AF-S VR Zoom-NIKKOR 70-300 mm 1:4,5-5,6G: 17 elements in 12 groups (two ...
10
votes
1answer
9k views

What does the magnification ratio number mean on a macro lens?

I'm looking for a macro lens. I have 28-105mm Nikkor which gives me "1:2 Magnification Ratio" (whatever that means). I found another lens, Tamron 90mm Macro, which has magnification ratio of 1:1. ...
4
votes
3answers
4k views

What is Aliasing and Anti-Aliasing?

What is Aliasing and Anti-Aliasing? Is it a bad thing to have in an image? If so how to avoid it? If you can describe your answer using examples then that would be great.
5
votes
4answers
216 views

What is the difference or relation between a Color Model and a Color Space?

What is the exact relation or difference between a color model and a color space? I find these two terms to be used interchangeably in some literature. Are they simply the same? Thanks!
2
votes
3answers
1k 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 ...
1
vote
2answers
119 views

CIE Chromatic Diagram explainment

The MacAdam Ellipse is applied in the CIE Chromatic Diagram. I understand that humans distinguish some colors better then other colors (that's why the shape is eliptic / a horseshoe / inverted ...
20
votes
4answers
3k views

What makes a DSLR camera “entry-level”?

When I look around the questions on this site, I feel everyone can clearly tell what makes a DSLR camera "entry-level". But I have no clue on how to tell. What makes a camera model "entry" level or ...