20 votes
Accepted

What is the advantage of carrying a tripod and ND-filters when you could use image stacking instead?

I'd like preface my answer with a note that a tripod is not only useful in conjunction with ND filters — it also improves the results from image stacking as well. By fixing the position of the camera, ...
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13 votes

What is the advantage of carrying a tripod and ND-filters when you could use image stacking instead?

Well, with regards to your (1)... You could carry a light tripod (or beanbag or any other way of stabilizing a camera) and use only a single ND filter instead of several stacked filters. With regard ...
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  • 4,997
8 votes

In an image with camera shake and a point light source, can the shape of the point light source be used to practically reduce the shake significantly?

Yes, this precisely what Photoshop CC's Shake Reduction filter does. Adobe first publicly demonstrated their prototype feature at Adobe Max 2011. The crowd was pretty wowed by the demo. While it was ...
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6 votes

Term for increasing detail with multiple exposures?

If you're looking for a grouping term, I don't think there is one that's used widespread or consistently, but personally I sometimes use stacking to cover these types of techniques. I just wish there ...
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6 votes

What is the advantage of carrying a tripod and ND-filters when you could use image stacking instead?

For me the main advantage is... Joy. I enjoy a lot more taking photos, people places, products, rather than editing the images, especially on automated tasks, like stacking photos. Of course, there ...
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  • 20.8k
5 votes

Term for increasing detail with multiple exposures?

I found what I believe is the answer I was looking for, which is "epsilon photography". Quoting from Wikipedia: Epsilon photography is a form of computational photography wherein multiple images ...
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  • 201
5 votes
Accepted

Can deconvolution reverse softness caused by diffraction?

Yes, using deconvolution you can invert any linear map from a hypothetical sharp image to a (hypothetically noise free) unsharp image. The actual image you have is not just an unsharp image caused by ...
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  • 3,508
4 votes

Term for increasing detail with multiple exposures?

EDIT: Originally I misread your question to only mean increase in resolution. I do not know of any term that encompasses that an HDR but these two cover quite a bit: Super-Resolution, although it ...
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  • 101k
3 votes

What is the advantage of carrying a tripod and ND-filters when you could use image stacking instead?

For use cases where image stacking might often be the preferred technique over single long exposures, a tripod or other physical method of stabilizing the camera is still invaluable and almost always ...
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  • 168k
3 votes

How does refocusing in a dual lens work?

The purpose of the HTC dual lenses is to create a "depth map". The distance between the camera and the objects in the picture is computed : each pixel has a distance associated. The following example (...
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  • 4,113
3 votes
Accepted

How is the spectral response of a camera typically measured?

Here are some of the ways: http://www.image-engineering.de/iq-products/iq-tools/measurement-devices/camspec http://www.image-engineering.de/iq-products/iq-tools/measurement-devices/camspecs-express I ...
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  • 2,001
2 votes
Accepted

What should I do with negative values when computing sRGB colors from spectra?

You are not clipping the intermediate RGB values. From the sRGB Wikipedia article you linked to, The intermediate parameters R, G and B for in-gamut colors are defined to be in the range [0,1], .....
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2 votes

What is the advantage of carrying a tripod and ND-filters when you could use image stacking instead?

1: I typically carry just a light tripod and a single 10-stop ND filter. I find that this is stable enough. 2: Taking multiple pictures would work but sometimes you can get gaps between pictures (...
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  • 121
1 vote

Changing the field-of-view of a photo in post

How big objects appear in a picture and from which side they are seen only depends on the location of the objects and the camera. So if you want to see how a picture would look is it was taken with a ...
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  • 1,482
1 vote
Accepted

Camera intrinsics from panoramic cutouts

What you know is the field-of-view. Any 4 images in a row covers exactly 360 degrees with no overlap, unlike the source images to produce the original stitched panorama. So 4 images covering 360 ...
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  • 101k
1 vote

What photo characteristics work best with facial recognition software?

This will totally depend on what facial recognition software you are using. A few other things to suggest are: Make sure there is no occlusion of the subjects face in an image (such as wearing ...
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1 vote

Term for increasing detail with multiple exposures?

I don't think that there's a specific term for that in photography. A term to describe the idea of combining information of many images into one in general could be superposition.
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  • 8,334
1 vote
Accepted

Is the relationship between object distance and magnification highly dependent on the camera used?

The relationship between two objects of different sizes located different distances from the camera is determined by only one thing: shooting distance. More specifically, the distance between the ...
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  • 168k
1 vote

What should I do with negative values when computing sRGB colors from spectra?

-6.173 is definitely not within the range 0 to 1. Am I doing something wrong? If not, what should I do with such a value? The values that are outside of the 0..1 range are values that are out of ...
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  • 5,115
1 vote

How is the spectral response of a camera typically measured?

Yes, color sensitivity is often measured and specified in bits. DxOMark provides one example and incorporates this into their camera ratings. From the description of their "Color Depth" ...
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