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mattdm's user avatar
mattdm's user avatar
mattdm
  • Member for 13 years, 6 months
  • Last seen more than a month ago
8 votes
Accepted

Does adding additional strobes cumulatively add to the flash power?

10 votes
Accepted

What is the quantative relation between flash guide number and ISO?

11 votes

How do I calculate the number of stops between two shutter speeds?

6 votes
Accepted

Why does EV increase as ISO increases?

4 votes

What is the formula to calculate aperture ("diaphragme" in French)?

35 votes
Accepted

How can I extract just the value of a tag without the name using exiftool?

5 votes

Why can't one calibrate a monitor with a DSLR & a color chart?

5 votes
Accepted

Why are blown-out highights pink instead of white in Darktable?

222 votes
Accepted

What does an unprocessed RAW file look like?

7 votes

Is "Date Taken" Exif data possible on .PNG file, and is it possible to copy "Date Modified" to "Date Taken"?

37 votes

Most Common Aspect Ratio?

6 votes
Accepted

How can I edit this RAW image to get the much superior JPG image?

5 votes
Accepted

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

3 votes

Camera for teenager

75 votes
Accepted

Is there a free program to (batch) change photo file's date to match EXIF?

4 votes

What are photographic "typologies"?

5 votes
Accepted

How to decide whether a portrait should be in color or black and white?

16 votes
Accepted

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

2 votes

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

8 votes
Accepted

Is there a way to change the aspect ratio of a DNG file?

1 vote

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

1 vote

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

1 vote

photon counting with a DSLR

16 votes
Accepted

Can a smaller sensor's "crop factor" be used to calculate the exact increase in depth of field?

15 votes
Accepted

How sharp are RAW photos before processing?

4 votes

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

2 votes
Accepted

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

0 votes
Accepted

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

8 votes
Accepted

What makes RF lenses better than Canon's EF lenses?

2 votes

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

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