mattdm
  • Member for 11 years, 2 months
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How can I edit this RAW image to get the much superior JPG image?
Accepted answer
6 votes

It is common for in-camera JPEG to apply a sharpening filter — often a quite strong one. Ufraw is rather dated. Use Rawtherapee or Darktable and include a sharpening step.

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When the object is 50 meters away, how do you know that the camera is focused at a distance of 50 meters?
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5 votes

When the object is 50 meters away, how do you know that the camera is focused at a distance of 50 meters? That object will be the sharpest. Focus aids like autofocus systems can help, and there are ...

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Camera for teenager
3 votes

I agree with the others that it's hard to compete with a modern smartphone for flexibility, connectivity, and even technical quality. You certainly won't get a good competitor in a "compact" digital ...

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As a blind person, how can I better understand how wide or narrow a field of view is?
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16 votes

When a field of view is described as 120°, that refers to the total angle. So, 60° to the left of center and 60° to the right. Most camera lenses show a very restricted subset of the field of view ...

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Second lens after Nikon 16-80 mm: Nikon 50 mm f/1.8g or other?
2 votes

Generally, obsession with decreased DoF comes from people who are looking to justify purchasing gear which can provide decreased DoF. (See What is GAS and how can I avoid it? for a deeply-related ...

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Why does aperture change when I zoom my lens even in manual mode?
1 votes

Many lower-cost (or even more expensive but high zoom-ratio) lenses do not have a constant maximum aperture. They are constructed so that they have as wide as possible aperture when zoomed out, but ...

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How can I set the two-second delay mode to persist for more than one shot on my Nikon DSLR?
1 votes

Nikon's cameras have always worked this way, and there is no way to change the behavior. I suppose that it's because if you forget that it's on and miss a shot right now, that's more annoying than the ...

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photon counting with a DSLR
1 votes

You should get a device meant to do that. Cameras are sold as tools for making visual art. Since cameras meant to take photographs are optimized for that purpose, they do not make good scientific ...

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How to calculate a sensor size when all I know is focal length and resolution?
4 votes

You cannot calculate sensor size from just focal length and resolution. Since resolution can vary depending on the sensor's construction, this just plain is not enough information. If you have a ...

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In Lightroom CC, Why aren't my changes saved in the underlying file?
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2 votes

So is the solution to export all my files to another directory and then copy them back and run Sychronize Folders so Lightroom flushes the database changes for a given photo? Sooooo... you could. But ...

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Blur image with a 1/2" lens on a 1/3" sensor
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0 votes

If the only difference is the sensor size, and the flange focal distance is the same, you're right — this shouldn't be happening. From the details you've given, the possibilities are: the systems don'...

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Why is the A1 (paper) format 594×841 and not 594×840?
2 votes

Because the standard is based on the square root of two — an irrational number — but each size is rounded to the nearest whole millimeter. The standard also allows for slight variation from the ...

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How to find out what part of image is less lens-distorted?
2 votes

I suppose the least lens-distorted rectangular part of a shot is defined by the focal length of lens I'm using, but I'd like to know which part it is exactly, or at least how to calculate that part. ...

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Why do some DSLRs have ISO less than 100?
8 votes

There's nothing magical about the value 100. In fact, early film had ISO values in the double and even single digits. Theoretically, there is no lowest value — well, zero, because it goes to fractions ...

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How to spot dust in images quickly while doing a shoot outdoors?
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32 votes

The dust isn't on the lens — it's on the sensor. Dust on the lens will not resolve so clearly. To check for it quickly, set your aperture to the smallest your lens can support. (Small apertures have ...

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How can I work around lack of support for Canon's new CR3 Raw format in the software I use?
1 votes

For what it's worth, here are tracking issues for popular open source raw converters: Darktable: https://github.com/darktable-org/darktable/issues/2170 Darktable's low-level "rawspeed" library: https:...

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What happens when the shuttercount of my DSLR is too high?
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5 votes

The camera shutter is a mechanical part, and like all things in the universe, subject to eventual failure. You can see How many actuations are "too many actuations"? for some information on ...

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What is the flash S2 slave mode used for?
Accepted answer
3 votes

Many built-in flashes have no mode in which there is no preflash. This means that in S1, your external flash will be triggered then, and may fire too soon to be included in the exposure at all. So S2 ...

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How to speed up Lightroom face detection?
Accepted answer
7 votes

Here's my photography-centric answer. How often do you need to do this? Pretty much just once for the full collection. Maybe the equivalent once every few years. At 10 seconds an image, this is going ...

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Transportable mini-studio and power management
1 votes

I'm going to propose an alternate solution: consider switching to the Godox flash system, which uses big lithium rechargeable batteries. The battery is proprietary, so that's not so handy, but they're ...

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Are guide number rules still valid over unusually high distances?
4 votes

I guess there would be some some small amount due to absorption in the atmosphere. But in theory there's not much complicated to it, and I don't see why it wouldn't still be the same. The formula ...

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How can I make use of a speedlight that does not work with the non-standard hotshoe on lower-end Canon cameras?
1 votes

Optical triggering by the camera's built-in flash can work, but also has significant limitations and can be more frustration than it's worth. Theoretically, this can be triggered by radio off-camera, ...

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What is the role of Shutter Speed while using a Manual Flash?
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5 votes

The simple equation assumes that the flash is effectively the only source of light in your image. This is a reasonable assumption in many cases, because since exposure works on an exponential scale, ...

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I bought a yn560 Iv speed light for my canon 2000d but its not working with the camera
0 votes

For some awful reason, Canon has removed the standard central pin from the hotshoe on its entry level models. This means that you can't use generic, manual flashes with these models, unfortunately. ...

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SD Card speed degrading and doesn't work on one of my cameras: can I do something?
Accepted answer
50 votes

Yes, there's something you can do. Stop using the card and replace it. Even reputable, high-quality cards have failures. And every such device has a limited lifespan. Don't risk it. You may do ...

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Why aren't multi-aspect sensors commonplace on high-end cameras?
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1 votes

Why aren't multi-aspect sensors commonplace on high-end cameras? You've listed plenty of technical reasons this seems like a good idea. The reason probably isn't technical. For years, a few camera ...

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How can I compare a few screen's color gamut?
2 votes

You can't, just from coverage percentage numbers, because you can't tell exactly where the overlap in three-dimensional colorspace will be from a single number representing area. See How do color ...

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Nikon D3500 vs Canon EOS T7
1 votes

First, your price comparison is not right — as I look on Amazon and B&H Photo right now, both are right below $400, with a three dollar price advantage for the Nikon camera. That's not a ...

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Vintage vs modern B&W photography techniques differ in color luminance - what's going on here?
5 votes

Are any of these in the ballpark? The last one: "imperfect chemical film response". Most black and white processes are not "panchromatic". That is, it does not respond the same way across the whole ...

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How do I tell my new Windows 10 PC to import images via SD card or card reader when I insert a card?
Accepted answer
7 votes

but I'd rather import them properly, rather than copy them, to retain the quality. I don't know the answer to the Windows part of this question, but there's a fundamental worry you have here that I ...

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