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-1
votes
2answers
169 views

Is it fundamentally possible to capture an orthographic image of the real world? [closed]

I decided that this is sort of a fundamental physics question regarding light and dimensional observation, so I decided to cross-post it in both this site and Physics SE (which is acceptable in stack ...
5
votes
6answers
408 views

What's the difference between zooming in on a subject vs moving closer? [duplicate]

If I stand 10 feet away from a subject and I want a close up shot, I can either zoom in or I can physically move the camera as close as possible to the subject. Which one is a better practice, or is ...
3
votes
1answer
511 views

Why do large format cameras seem to keep vertical lines vertical rather than converging?

I've noticed that large format cameras seem to keep verticals vertical whereas me shooting with 35mm lenses I get much more convergence. Is this just because the photographers are using architectural ...
4
votes
2answers
179 views

Perspective Warp vs. Tilt-Shift

I've been doing some architectural photography and indoors with the Nikon 14-24 f2.8 lens. Most of the time I can get my camera high enough to frame my shot and keep vertical lines vertical. But ...
2
votes
1answer
139 views

Is 85-135mm really the best for every single kind of face?

They say that focal length around 85-135mm is the best for the head and shoulder kind portraits. I've done some tests myself, I can definitely see the differences. The face is more natural looking ...
9
votes
2answers
531 views

How to determine camera location from an existing photograph?

I have old photos of a town and landscape around it. I'd like to take these photos again, from the same locations. In some cases I am struggling with finding the original location of the camera. I ...
0
votes
1answer
112 views

How to recreate the perspective and field of view of an existing photo? [duplicate]

Some days ago, I found myself in the middle of a much-used road to recreate a photo of the same scene from over a hundred years ago. The result is quite alright, but far from perfect. What ...
0
votes
0answers
36 views

How to accurately calculate size in image using relations and a reference

OK so the relation math is easy enough. If you know the size of an object, say a 12" ruler in the image, and you put the ruler flat against another object like a door. You take a picture of the door ...
15
votes
9answers
2k 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 ...
17
votes
10answers
5k 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 ...
26
votes
11answers
2k 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 ...
4
votes
3answers
2k views

What is ideal distance to subject for head and shoulder portraits?

Perspective is a matter of distance and has an effect on facial features and the observed three-dimensional feeling in a two-dimensional photograph. Proper lighting is a big part of this, but that's ...
16
votes
2answers
10k 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: ...
1
vote
0answers
179 views

How can I batch convert photos made from some angle to frontal view?

Is there an application that would batch convert photos made from some angle to frontal ones? I know ShiftN does batch perspective correction, but I would like to automatically convert some photos of ...
5
votes
3answers
447 views

How to correct perspective distortion?

This is the original photograph I took with a Canon 6D and focal length 80mm (desaturated): I wanted the building to use up more space, so I cropped it: Because of the tilt of the off-center ...
5
votes
3answers
3k 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 ...
3
votes
2answers
283 views

Image size of the Sun / Moon from a telephoto lens

I'm interested in taking a picture of the Sun / Moon using a telephoto lens. For example like this. It would be very helpful for me to know what the approximate image size of the sun / moon would ...
2
votes
4answers
206 views

Can a telephoto lens have a wide field of view?

85mm-135mm lenses are great for portraits because of compression perspective distortion, meaning they flatten facial features. However at those focal lengths, you have to step back a few meters from ...
4
votes
3answers
360 views

Nikon PC-E Lens .. would it work for me?

I am interested in experimenting with a Nikon PC-E lens (by renting NOT buying!) and I can pair it with an F100, D3100 or D70 body. According to Ken Rockwell's page Nikon 24mm PC-E Compatibility the ...
1
vote
3answers
145 views

What's the succinct reason for face-warping in wide angle lenses?

Is there an accurate way of explaining face-warping when using wide angle lenses? I realised I can't actually explain it without diagrams, so a succinct definition (no more than a few lines) would be ...
1
vote
1answer
168 views

How to have one person look tall and another look small in one image?

When one of my friends showed me a picture, I was amazed on how it was done. The picture shows two people standing on the ground, but one of the people appears to be much taller and bigger than a ...
0
votes
2answers
386 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
139 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 ...
15
votes
1answer
1k 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, ...
5
votes
2answers
748 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 ...
5
votes
2answers
761 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
249 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 ...
29
votes
3answers
3k 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 ...
4
votes
1answer
461 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
230 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
1k 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
395 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 ...
2
votes
3answers
410 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?
3
votes
3answers
3k 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 ...
5
votes
2answers
1k 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 ...
19
votes
1answer
2k 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 ...
9
votes
1answer
256 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 ...