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53

Why are hardware-based manipulations, like black and white photography (traditionally using black-and-white film), long exposure, etc., which also result in an "unnatural" image, acceptable while software-based manipulation (like HDR) is frowned upon by the photography community? Differences from human perception that are due to limitations of the medium ...


29

Exposure fusion is a process that takes multiple images and combines them to create a single image while only keeping the properly exposed elements. In contrast to HDR images, exposure fusion is more basic, gives a more realistic effect, and requires fewer steps. The exposure fusion(fusion, or EF) process takes each individual pixel and assigns a weight to ...


21

What's the difference between “Fake HDR” and real, bracketed exposure HDR? The only difference is how broadly or narrowly you decide to define the term High Dynamic Range Imaging (HDR). Do you use the broader term as it has been historically used for over 150 years to reference techniques used to display a scene with higher dynamic range than the dynamic ...


21

Is it frowned upon? Photography has always made use of whatever technology was available, whether in the camera, the darkroom or, now, the computer. It's a long time since other forms of art were required to be 'photorealistic'. No need for photography to be either! If you find yourself among people who disagree, work within their rules if you find ...


20

There are already camera's with DR larger than the human eye, both instantly and overall. The human eye's dynamic range is not as large as most people tend to think it is. As I recall, it is somewhere around 12 to 16 EVs, which is right around the level of a modern DSLR. The primary difference is that we have extremely natural aperture control that will ...


19

In the immortal words of the late National Geographic photo editor Bob Gilka, "Kid, if you want to be a better photographer, you're going to have to stand in front of more interesting stuff." That said, welcome to the sometimes not-so-wonderful world of the commercial/industrial photographer. As often as not, making a dramatic, exciting picture of something ...


18

It sounds like what you're looking for is JPEG2000. It has a range of options including a 16-bit lossy compression and better compression ratios than JPEG. It hasn't been as widely adopted as hoped (for a host of reasons) and may have some patent issues that might make it difficult to use in certain situations but otherwise it fits your needs. Personally ...


16

With high resolution images, even the tiniest vibrations will be visible in the image when viewed at the pixel level. The same holds for slight movement of the subjects in the image (from wind, motion, etc.). Misaligned images degrade the quality of the result of the HDR processor. Note that if you shoot RAW, you can use a single image to generate a few ...


15

HDR-TV is (yet) another standard of video transmission. The color gamut is wider (see rec 2020 vs rec 709) but so is the resolution. The standard is supposed to be backwards compatible which means you will only see the benefits of the wider gamut if you have a television that supports it, but if you don't you will still be able to view the stream in the ...


13

There are quite a few advantages. A difficult problem that often arises is blooming of bright areas into adjacent dark areas. So, the overexposed pixels that are in the bright area will leak electrons to adjacent pixels, making them get gray values that are too high. If the contrast is very high, those pixels may be in dark areas. This means that with only ...


11

There are two distinct steps to producing the images that are frequently labelled "HDR": Exposure blending: merging multiple low dynamic range images into one image with higher dynamic range. Tonemapping: processing that high dynamic range image into a low dynamic range image suitable for viewing on standard [low dynamic range] equipment (such as regular ...


11

The interesting thing here is that's not a colour cast, the hue values are messed up. It's not just that all the colours have been pushed toward purple, which can happen for certain white balance settings, what's actually happened is that all colours are shifted round the colour wheel, blue/cyan -> purple, orange/brown -> green. Here's the right hand part ...


11

It all depends on the scene in terms of overall brightness, the total dynamic range, and how fine the graduations are between bright and dark. The wider the difference is between the brightest part and the darkest part of the scene, the further apart your darkest and brightest exposures need to be. The best way to measure this is to use your camera's ...


11

The phenomenon you describe is called color constancy, and it is enabled partially by the human vision system's chromatic adaptation and partially by something I will describe using the scientific term complicated stuff in our brains. That may sound a bit glib, but this is actually a complicated topic with whole books just scratching the surface and ...


11

There are usually small variations between images when you shoot a stack for HDR, especially shooting handheld. Wind may cause larger variations, as well as other moving entities within a shot (such as a pedestrian in the distance). Photo editing software is good at dealing with these variations. However, certain items, especially complex/movement-prone ...


10

What you are looking for Exposure Fusion not HDR. This averages out pixels from different exposures to produce directly a low-dynamic-range image, so there is not need to do the tone-mapping like for HDR images. Tone-mapping is the delicate operation where, without a subtle hand, you end up with the types of images you are talking about.


10

HDR from a single RAW images does not add any dynamic-range than is captured. If the scene exceeds the dynamic-range of your camera, then no matter what you do the RAW will contained clipped channels on one or even both ends. Even if you have the best camera and use it at its optimal ISO setting, the most you get today is just above 14 stops of DR. Taking a ...


10

With an image like this, the best and easiest solution is probably manual exposure fusion. It's easy enough to do in any raster graphics editor (GIMP, Photoshop, etc.). For example, here's what I managed to produce from your original images in a few minutes in GIMP: Here are the steps I used: Open both images as layers in GIMP, with the darker image (...


10

The best method I have found is to shoot the moon when there is still enough light in the sky to narrow the dynamic range between the Moon's surface and the surrounding sky. A moon just a little past new can be shot shortly after sunset and exposed so that details are visible from the earthshine reflecting from the dark part of the new moon. Shooting an ...


10

Seeing is an active process A big issue is that looking with your eyes is very unlike capturing an image - an image needs to include all information that the looker might look at, but normal vision is an active process that involves movement of the eyes, refocusing and dilation of pupils according to the objects we're looking at. Thus, if you want to ...


10

Yes and No. Taking a single RAW, you have more dynamic range than a single JPG, so you have a limited 'high dynamic range', depending on the camera's capabilities. For a less limited HDR, you need to do bracketing - you shoot a series of identical compositions, while changing exposure, for example -4, -2, 0, +2, +4. This allows you to compose those shots ...


10

This can happen when there are strong light light sources in the scene (such as shooting sunrises/sunsets like yours), when Nikon's Active D-Lighting is on. Active D-Lighting (ADL) tries to help balance an image that has areas of high local dynamic range; essentially, it is a form of high dynamic range processing. ADL slightly reduces the exposure, so ...


10

Separate answer, just to show confirmation of scotbb's diagnosis. CaptureNX-D with Active D-Lighting overridden. Screen shrunk just to show relevant info. As to whether or not it's an optical illusion, here is a crop of the image, with [L] & without [R] Active D-Lighting, no other changes. Further example of composite image...


10

Why are hardware-based manipulations, like black and white photography (traditionally using black-and-white film), long exposure, etc., which also result in an "unnatural" image, acceptable while software-based manipulation (like HDR) is frowned upon by the photography community? Because we feel we need to put a line that separates photography from painting ...


9

I know this is late but I have been doing HDR panoramas that have been successful. Here is my method: I stitch first using Hugin. If I bracket say -2,0 and +2 stops I will have three sets of exposures to stitch. I first stitch the set that has the most detail because Hugin will be able to make the best set of control points from this set. Let's say the -...


9

I would say they are HDR images. The built-in photoshop HDR program is not that great. You would want to look into Oloneo, Photomatix or Nik Software. Of these Photomatix is the recognized leader, and you can use some components of their software for free. The other two have 30 day trials. If yours are blurry, it may be the aligning and ghost removal. ...


9

The differences in camera formats won't show up in an image that size on the web. If you want to print large then you need to be careful about lens selection and use the largest format available to you. That image is almost certainly multiple exposures tonemapped / enfused into a single picture, I.e it is what's called an HDR image. No amount of graduated ...


9

Looks like version 3.11.10 of Canon DPP introduced HDR of three images. Here is the manual (see p.81 for the HDR feature) and here is a review of the feature. If you decide to look elsewhere for HDR software, then this page reviews five free packages. According to them on the easy but less powerful side there is Picturenaut, and on the harder but more ...


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