WayneF
  • Member for 6 years, 9 months
  • Last seen more than a week ago
Which planet looks the biggest through a camera? Which planet is the easiest to take a picture?
23 votes

Normally Jupiter is easily the largest seen from Earth, but depending on orbits, it could sometimes be Venus (next time in September, and then next in 2020). This site will answer about details ...

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Why do cameras use a slit between two curtains rather than exposing the entire sensor instantly?
23 votes

As was said, the mechanical shutter has speed limitations. As to the slit, try to imagine without it. Suppose the shutter opens by moving from top to bottom of frame. And then of course, it has to ...

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Why are 1/3 stop apertures uneven numbers apart?
Accepted answer
20 votes

For f/stops, there is a precise multiplied difference of 1.122462 X intervals (cube root of √2) between all third stops. The precise third stops are actually numbers like 8.98 or 10.08. My meaning of ...

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Why are flash pulses so short?
20 votes

That is a true statement, but it misses the big point. (As the shutter would see it), it would simply become continuous light, like any incandescent light bulb (always On for the full shutter ...

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Best material to absorb as much light as possible
16 votes

If you want black, black velvet from the fabric shop does a really good job. Here is a sample tabletop, the full light is directly on it. This was a ISO 200 f/8 photo with flash. It is a better ...

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Is there a way to write a "foreign" image so a Fujifilm X camera will display it?
16 votes

I don't know what is required to recognize the "foreign" image, probably something in the Exif... but for your goal, just create the image with your message, with appropriate background, and take a ...

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Are lenses marked with the true focal length?
15 votes

Published focal length is rounded in some degree, normally to nearest 5 or 10, or in some short cases, to the nearest 1. More precision would not be realistic, because the marked focal length is only ...

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Do you really need to fire flashes regularly when not otherwise used?
Accepted answer
14 votes

Flashes have large electrolytic capacitors (sort of a wet variety inside) which when triggered, discharge into the flash tube to power the bright flash. When sitting around turned off for months or ...

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What is the rationale for having less than 36 frames in a single 35mm film roll?
14 votes

Just my notions, but some people did not take so many pictures. It might take weeks or months before they would expect to accumulate 36 exposures. Rolls of 24 were a little less expensive, and less to ...

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Why don't cameras show an "accurate" histogram?
Accepted answer
13 votes

Why don't cameras show a histogram based on the RAW data rather than on the JPG preview? My notion is this: Because it would not be useful, because raw images don't yet have white balance in them, ...

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How can I get headshot portraits with pleasing, natural perspective if I'm constrained to a short distance?
12 votes

Classic standards have always been more like 2 meters Minimum distance for portraits. 3 meters is common in professional studios, for even better perspective. Too little distance (like 1 meter) will ...

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Are there any electric flashes that will work at shutter speeds like ¹⁄₁₀₀₀th of a second?
Accepted answer
12 votes

That camera with 1/60 sync (and says ASA) must be at least 40 years old. :) More modern cameras commonly allow 1/200 second shutter with flash. But this limitation (of not allowing flash with 1/...

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Why do my photos have an exaggerated blue hue when I shoot in manual mode?
Accepted answer
12 votes

Auto mode is auto exposure, and it also always uses auto White Balance and auto ISO, which cannot be turned off in Auto mode. Auto mode is "auto everything". The A,S,P,M modes only set exposure, but ...

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What do truncated histogram spikes indicate?
11 votes

It doesn't exceed the top of the histogram scale. That may appear common, only because histograms are always normalized. Data is intentionally scaled so that the peak value reaches the top (this shows ...

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Why can't I shoot with a fast shutter speed with my continuous light at max power?
9 votes

Not sure what your subject is, but as was mentioned, you don't need fast shutter for a stationary subject with camera on a tripod. However, human or animal subjects can move. But the obvious key word ...

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RAW in ACR vs JPG in ACR
9 votes

The raw image is 12 (or maybe 14) bits, and JPG is 8 bits (less range). JPG does not handle changes of extreme range well. The JPG image already has white balance and color profile in it, likely our ...

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What was the Group f.64, and why were they important?
8 votes

The f.64 group was founded by Ansel Adams and his peers in the early 1930s. The group promoted the art of the "clearness and definition of the photographic image" (quote of their words), with photos ...

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Advice for transitioning from landscape nature photography to portraits
8 votes

Very first basics, a good starting point: The portrait lighting is the thing of course. There are a few lighting options, in fact, any idiotic plan you can dream up probably already has a name. :) ...

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Cropping images in post-production - how important is the image ratio?
Accepted answer
8 votes

Aspect ratio is only critical when matching to one printed paper size, or maybe to full screen monitor shape. Only one ratio fits another shape. And since many shapes exist, no one ratio number is ...

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Do f-stops scale with sensor size the way focal length does?
7 votes

No, f/stop does not vary with sensor size. Nor does focal length vary with sensor size. The lens remains totally unaffected by the sensor. HOWEVER, the field of view that the cropped sensor can ...

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Focal length on Full frames and cropped sensors
7 votes

If you take a photo of a FF camera and 75mm DX lens and compare that image with another shot of same subject made by a cropped camera and a 50mm lens what you will see ? But to be able to see the "...

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Why is the white balance so different when using daylight bulbs?
7 votes

Daylight (in photography) is not an absolute color, it's more a vague wishful dream. Liberties are taken. :) The various light bulbs will simply vary greatly, each brand and type. Your gray cards ...

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Which SS/F-stop table is the correct one?
Accepted answer
7 votes

Like Michael says, the top chart is just hypothetical, and it only uses some random exposure, and is NOT about any specific exposure condition. Instead, it tries to show two concepts. It is an ...

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Why are professional flashes so expensive?
7 votes

I don't know your special situation, you did say high energy, but I don't know scale. You want a fast shutter so I assume you want a high speed photo. Perhaps you may need significantly greater power,...

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How do 35mm film scanners deal with the film base color?
Accepted answer
6 votes

Real film scanners scan color negatives by increasing the exposure time of the blue and green channels (relative to the red channel). This is an analog operation, similar to using color filters in ...

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Lens for Nikon D5600 recommended for bird photography
Accepted answer
6 votes

Focal length does not much depend on the bird or the camera, but instead depends on the distance to the bird. Is distance 3 meters or 30 meters? The camera you own is likely very fine. Use it to learn ...

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Different result between scanning in Epson's "color negative film" mode and scanning in positive -> invert curve in post?
Accepted answer
6 votes

Scanning handles removing the overall orange mask in color negative film. Scanning as positive, and then postprocessing invert does not remove it, inversion simply turns that orange mask to a deep ...

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Changing depth of field of Nikon D5200
6 votes

Guessing, but are you taking the picture, or only looking at the view finder? Because, the camera does Not stop down to the f/32 until the actual instant that it is taking the picture. Only the ...

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Why doesn't the picture become darker the more you zoom in?
6 votes

The f/stop system of numbering is specially invented to ensure that different lenses at the same f/stop number will see the same exposure. This includes your wide angle and telephoto lenses. F/stop ...

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How does crop factor affect perspective?
6 votes

Not correct. Perspective (referring to the size and spacing of background objects relative to subject) is determined by only the distance of camera to subject. This is the geometry drawn from the ...

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