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Questions about specific terms used within photography

learn more… | top users | synonyms (1)

4
votes
3answers
7k 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.
7
votes
3answers
4k views

What is the difference between a lambda print (RA-4) and a color inkjet print?

I can't seem to find any good information about the differences between the lambda printing process (on RA-4 paper, also known as a C-prints or chromogenic color prints) and inkjet printing (also ...
3
votes
1answer
172 views

What is “hybrid AF”, and how does it compare to other autofocus technologies?

I've heard of some new cameras — particularly mirrorless cameras — with a feature called "hybrid autofocus". What does this mean, and how does it relate to the traditional approaches of contrast and ...
7
votes
6answers
8k views
40
votes
8answers
87k 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?
20
votes
2answers
13k 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....
5
votes
8answers
2k views

What is Snapsort's “true resolution” score?

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 ...
2
votes
2answers
181 views

What is the “airy disc”, in simple language?

In my understanding, this is relevant to photography because if you are shooting light of a certain wavelength (or primarily so, and such as: a blue scene), your aperture size can affect the sharpness ...
5
votes
2answers
316 views

What is the style of photography called where the objects in the photo are not relevant?

I'm taking many photos where I'm mostly interested in lighting, color, forms. What makes up the image, in terms of objects, is largely irrelevant. An apple could just as well be a red ball, a bush ...
1
vote
0answers
70 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.
2
votes
3answers
267 views

What is the style of photography employed by Ka Xiaoxi?

The photos by Chinese pro photographer Ka Xiaoxi in this article seem to all have a very bright harsh flash going off. (More work by the same artist for Nike; also see his web site.) Typically for my ...
35
votes
4answers
24k 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 ...
15
votes
5answers
2k views

What does it mean when a TV “supports HDR”?

I am a bit confused about how HDR (on TV) works. The way I see it, multiple images of the same frame are used to create one image which shows better details in low-light and high-light areas of the ...
3
votes
1answer
153 views

What is this plastic ring called on a tripod and can I get a replacement?

I have a Hama Compact Traveller Tripod in which the plastic ring that inserts where the tripod head and metal tube goes is broken. Is it possible to get a replacement for this as I do not wish to ...
2
votes
3answers
134 views

What is the root of “El bokeh wall” naming?

I've found that bokeh wall in some sources is referred as El Bokeh Wall. I wonder: why is that? Searching gives no answer. Is it in spanish or something else? Example of using "El Bokeh Wall": http://...
4
votes
3answers
5k views

What is a Dual pixel autofocus?

I have seen the term "Dual Pixel CMOS autofocus" used by Canon (specifically in relation to the 70D). What is it? Is this Canon specific technology? Are there equivalents in other manufacturer's ...
15
votes
3answers
2k 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 ...
61
votes
6answers
22k views

What is “angle of view” in photography?

I read on the Lens Buying Guide @ neocamera: Focal-length determines the angle-of-view seen through a lens for a given sensor-size. With a full-frame sensor a lens gives the same angle-of-view ...
2
votes
2answers
161 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?
2
votes
1answer
72 views

What is “photo paper”?

I've heard of photo paper, and I assume it's better suited for printing photos, but in what way? And what is photo paper in the first place? If I buy high GSM (like 250) paper of matte, semi-glossy ...
3
votes
3answers
193 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 ...
0
votes
1answer
631 views

What's a series of pictures called? Not montage, collage etc. — something from National Geographic

I'm not talking about a collage, montage, slideshow or any form of video or time-lapse. It's a word I had read on some page of the National Geographic site but forgot. The series tells a story of a ...
22
votes
4answers
31k 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?
11
votes
4answers
41k views

Are 2 megapixels enough for HD resolution pictures?

HD pictures has 1920x1080 = 2073600 pixels = 2025 kilopixel = 1.98 megapixel. Does this mean that we can take HD pictures with a 2 MP camera? If not, why not?
1
vote
2answers
132 views

What is it called when a camera generates files with more megapixels than the actual sensor provides?

I found in many Android devices that the "real array size", which is the actual pixel count of the camera sensor, is lower than the 4:3 Max picture the user can take. For example: Sensor Array = 1616 *...
3
votes
1answer
464 views

Is there a technique for combining multiple images to create a sharper result?

I've been experimenting with photogrammetry for a while, and the main hurdle I keep tripping over is the clarity (lack thereof) of my images. Rather than spend a lot of money on a better camera, I'm ...
11
votes
3answers
22k views

What is flat light and how to counter that?

I have often heard people saying that the light in the picture X is appearing "flat". I want to understand what exactly does that mean, and what are the possible ways to counter that?
2
votes
2answers
318 views

What makes the Foveon X3 a “direct” image sensor?

In marketing materials mentioning the Foveon X3 sensor, I usually see it referred to as the "Foveon X3 direct image sensor" (example): I understand how the Foveon X3 sensor works (stacked ...
17
votes
2answers
2k views

Why is it called “macrofocus” and not “microfocus”?

Typically, when referring to an image of a small object, or just something small, the prefix 'micro' is used. For instance, a tool to look at tiny objects in clear focus is a microscope. A device that ...
14
votes
1answer
999 views

What is lomography?

I've been seeing some buzz about lomography lately. I've been trying to understand what it is and how it is different from photography. Most refer to it as 'experimental analogue film photography'. Is ...
9
votes
5answers
5k views

What's the difference between colour space and bit depth?

I know that there are different types of colour space and that sRGB is the most common. Bit depth defines the variations of a colour channel, where (I think) 8 and/or 16 bits are the most common. ...
4
votes
2answers
5k views

What is the difference between a point-and-shoot and a mirrorless?

Both point-and-shoot camera and mirrorless cameras seems to be mostly similar in the way they work. So, What are the differences between a point and shoot and a mirrorless camera? Is a mirrorless ...
23
votes
5answers
4k views

What is exposure compensation?

What does exposure compensation do? If I take a photo with a given shutter speed, aperature, and ISO, and then take the same shot with +1EV or -1EV, what is actually happening? Is this just a gain ...
-1
votes
1answer
109 views

How are “Tele Photography” and “Candid Photography” different for a wedding?

For wedding functions, are "tele photography" and "candid photography" the same? If not, what are all the similarities and dissimilarities?
6
votes
2answers
476 views

Lenses and Filters: what do the terms Coating, Multi-Coating and Nano-Coating mean?

I see the word "Coating" in different questions (related to lenses and filters). What are Coating, Multi-Coating, and Nano-Coating?
110
votes
7answers
9k 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 ...
15
votes
4answers
2k views

What is a parfocal lens and how beneficial is it to photography?

I heard someone say that after using a parfocal lens for the first time, they would never switch back. What is a parfocal lens, how is it different from any other lens, and what are the advantages and ...
32
votes
9answers
10k 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 ...
-1
votes
2answers
120 views

How much zoom does a lens need to have before we call it a superzoom lens?

I've read that superzoom lenses have poor image quality, but how much zoom does a lens need to have before we call it a superzoom lens? 3x is certainly not a superzoom, while 10x probably is. ...
1
vote
0answers
186 views

What is a “pseudo mannequin”?

I am applying for a clothing store at Amazon and they are telling me pictures cannot be on a mannequin or a ghost mannequin, rather they should be on a real model or a pseudo mannequin. What is the ...
6
votes
3answers
6k 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 "...
3
votes
1answer
1k views

What is the difference between image processing and image editing?

I've been facing a few questions in my mind about the terms image processing and image editing. What is the difference?
2
votes
4answers
937 views

Is the angle of view actually different on APS-C?

A 50mm prime lens, whether APS-C or Full-frame is designed around the 35mm format. As such, is the angle of view actually different on a DX/APS-C crop sensor or are we just seeing less of the full ...
2
votes
2answers
693 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 ...
6
votes
2answers
238 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 '...
17
votes
3answers
4k views

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

Does anyone know the origins of the term?
14
votes
5answers
19k 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
947 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?
1
vote
3answers
216 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 ...