The perspective tag has no wiki summary.
0
votes
2answers
48 views
How does focal length chage perspective? [duplicate]
@MichaelClark answered a question I posted about zoom using focal length (emphasis added):
You are correct that a focal length twice as long (2X zoom) as the original one will make objects appear ...
0
votes
2answers
123 views
What happens when you turn the objective
What happens when a photographer with an old photograph machine turns the objective clockwise or counter-clockwise?
Is the lens turned too? Or does it change lens?
I'm studying optics right now and ...
11
votes
2answers
676 views
How do people shoot very large moon views?
I see pictures of the moon that looks like it is very close to the earth; I am wondering whether they are real or is there a trick to show the moon that big?
Here is an example: ...
3
votes
3answers
450 views
How to avoid unflattering facial distortion when using a slightly wide angle lens?
A 35mm prime on a full format body (or 24mm on cropped) is a great lens to walk around with. But when one gets too close to someone to take a picture, invariably some of their features are ...
5
votes
2answers
262 views
Is there a difference between using a telephoto or wide-angle lens for portraits? [duplicate]
Possible Duplicate:
Which focal-length lens is usually used for portrait photography, and why?
Assuming a similar aperture, what difference would you see using a 50mm, 85mm, or telephoto ...
4
votes
2answers
360 views
How to calculate the viewing distance giving natural perspective?
When I move my eye closer to a photograph, it will fill a larger part of my view. When I move further, the area filled by the image will become smaller. Apparently, there must be some point where the ...
4
votes
1answer
180 views
Are the perspective control advantages of a tilt shift lens less important on higher resolution cameras?
When using a tilt shift lens for perspective control, you can use shift to help account for converging lines such as in a scene of a church from 100ft away. I can also handle this type of perspective ...
14
votes
1answer
902 views
Why does a 50mm lens appear to give a human perspective, rather than a normal lens?
I grew accustomed to the notion that what one sees through a normal lens equates (or is close to) what can be seen with the naked eye (although that is not the "pure" definition of a normal lens, ...
4
votes
1answer
217 views
How can I find the matrix that GIMP used?
I used a perspective transformation on an image in GIMP, but not before I forgot to record the transformation matrix it used. (I need to apply the same transformation to a bunch of other images.)
I ...
6
votes
3answers
169 views
warehouse interior photography to show scale
I am currently trying to shoot the inside of a client's new building for a brochure, however its rather empty as its new.
I want therefore to capture the scale of the place, its quite big!
This is ...
2
votes
1answer
631 views
Auto cropping scanned document or photo
I usually take a picture of bill or receipt using my mobile phone and store it in a computer. Is there any desktop or Web-based software which can straighten the photo of a paper and flatten it? For ...
4
votes
5answers
294 views
How do I prevent / fix out of square images?
I took photos of a lot of different framed art pieces that I wish to sell. The frames of these art pieces are either square or rectangular. In my images, the top of the frame appears to be wider than ...
24
votes
3answers
1k views
What does it really mean that telephoto lenses “flatten” scenes?
This is another perspective distortion question. I understand that perspective distortion is primarily a function of capture and viewing distance, but I am still working on fully understanding the ...
2
votes
3answers
275 views
Is it possible to change the point of view of an existing image by extrapolating the missing data automatically?
Is there any software to take an existing picture and to raise up the camera position a little bit for changing the perspectives and the software will recognize how to fill the missing parts?
12
votes
8answers
844 views
How can I stitch a panorama correctly if I moved the camera along the horizontal axis?
Here in Argentina, we have a very fancy street called "Lanin". All the houses and walls on that street have some kind of mosaic stuck to it, and it's very cool. It was made by a local artist who lives ...
3
votes
3answers
2k views
How do I take forced perspective photographs with a point & shoot camera?
My teenage son needs to take some forced perspective shots this weekend as part of a camping/hiking trip. He has a Panasonic DMC-FX01 point and shoot camera.
He wants to be able to hold up something ...
4
votes
2answers
932 views
What is one (single) point perspective photography?
Single point perspective is a technique used in drawing.
Using one perspective, parallel lines converge to one point somewhere in the distance. This point is called the vanishing point (VP). This ...
13
votes
10answers
3k views
Why don't more people use fisheye lenses as a cheap wide angle lens?
From my understanding, a fisheye lens usually has a coverage of 180 degrees or close to it. Given the extreme coverage and the availability of software that can turn fisheye images back to a ...
9
votes
1answer
235 views
How can I achieve an effect in still photography that's analogous to a cinematographic effect?
I don't know how it's achieved or what it's called, but occasionally in a movie I see an effect in which the perspective of the scene is modified in such a way that the objects that are further away ...
17
votes
1answer
841 views
What is background compression?
What does the term "background compression" mean? How would you tell you're achieving it, and how would you achieve it? Ideally, the right answer would also explain how this is related to ...
23
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11answers
1k views
Will a tilt-shift lens solve my 'leaning building' shots?
I shoot primarily with a Nikon D300, and that's not likely to change soon. The camera does everything I need it to do, but this. I also use a 17-55 lens, which I know that Thom castigates as being ...
