Napioa - Wind Origins

Napioa - Wind Origins
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  • 0 posts edited
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  • 112 votes cast
Oct
14
comment Why is there the illusion of detail in photographic noise?
We have all learned, through long conditioning, that featureless surfaces are not natural. Noise just tricks your brain.
Oct
12
comment What are the dynamic ranges of commonly available 35mm film?
@osullic doesn't film grain meet the definition of noise?
Oct
9
comment What is the right way to delete all photos from a camera?
@mattdm the implied answer is that you should format the flash. It should be stated explicitly though. P.S. keeping picture settings the same won't make file sizes the same, due to compression which will vary from image to image. P.P.S. this probably should have been an edit to the answer from 2010.
Oct
9
comment What is the right way to delete all photos from a camera?
@MGOwen I have a multi-step process: 1. copy from the card to my picture directory; 2. copy the picture directory to a backup disk; 3. verify the contents of the card against the backup disk to make sure there were no errors in copying; 4. delete the files on the card, double checking to make sure it's really the card.
Oct
9
comment Why do drones capture images that are curved at edges?
This would have been an even better answer with a description of what a fisheye lens is.
Sep
25
comment What low-cost ISO 400 film is good for learning photography?
I would suggest not using film at all. Learning is based on practice, which means taking as many pictures as possible; if you're stopping to load new film all the time, or worrying about how much it's going to cost, you'll be limiting yourself. My own photographic skills went way up when I switched to digital.
Aug
31
comment Is the anti alias filter really a blurring filter?
@joojaa the answer is complex. As noted by this answer, only half of the problem is the anti-aliasing filter, the other is the Bayer filter demosaicing. The anti-alias will send some of the information that should have gone into one color pixel into a different color pixel instead. Modern demosaic filters are not simple beasts, and I doubt their response can be modeled consistently.
Aug
31
comment Is the anti alias filter really a blurring filter?
@RogerKrueger you can theoretically get full resolution if the input is monochrome, the output doesn't matter. I think many modern de-Bayering filters attempt to approach this ideal, but I don't know how close they come.
Apr
27
comment How can I compare 'super-zoom' lenses to make up my mind which one I should buy?
Beware that there are different aspects to image quality, there's no easy way to rank lenses unequivocally. And there are other things to consider, such as speed (F-stops), range, and close focus abilities.
Jan
19
comment What is the 'Golden Ratio' and why is it better than the 'Rule of Thirds?'
@Julian 1/1.61 is approximately 0.62, which is the proportion given in the answer.
Jan
19
comment Does the right calibration temperature for my monitor depend on season?
The appropriate white point is based on the color of the light in the room where you'll be viewing the picture, not on any conditions where the picture was taken.
Jan
19
comment Does the right calibration temperature for my monitor depend on season?
@mattdm there's no seasonal effect. The time of day might matter, but not the time of year.
Jan
19
comment How do I fix a dog's wrong colored eyes in flash photos?
Older versions of Paint Shop Pro were unique in having red-eye removal that works on pet eyes.
Jan
19
comment Should I be shooting in RAW even though I'm a beginner that doesn't know how to retouch photos yet?
@Designer023 thinking before each shot does give you better outcomes, but only if you have enough experience to do the right kind of thinking. See the story at the beginning of blog.codinghorror.com/quantity-always-trumps-quality
Oct
14
comment Should I use JPG or TIFF for high-quality prints?
Your sample link didn't work for me. And is the damage you see in JPEG caused by artifacts, or is it just due to being an 8-bit format?
Aug
30
comment What are the best peak-fall landscape photography locations in the US?
Don't forget the polarizing filter.
Apr
11
comment What happened to Foveon sensors?
@Kendall, just to be clear I'm using the term "pixel" here to represent the smallest addressable area on the image plane. I believe this is the definition from the dawn of digital imaging. The definition is independent of the color information available at each address. I hadn't realized the SD-1 was competitive in pixel addressing, I'd love to see the output.
Apr
11
comment What happened to Foveon sensors?
@Kendall, although each pixel of a Bayer array has a filter in front of it, they are still individual pixels with their own spatial characteristics. Sophisticated interpolation allows the red channel to incorporate information from the green and blue channels as well.
Apr
9
comment What happened to Foveon sensors?
Early Sigma cameras used JPEG compression settings (subsampling) that didn't show their sensor to the best advantage, but they fixed this. I wish I could remember where I had seen a quite graphic demonstration of the problem.
Apr
8
comment How do I get a photo of the required 300dpi or for a 24x36" vinyl banner?
The resolution field is intended for devices which have an actual physical resolution, such as scanners. The EXIF 2.2 spec is at exif.org/Exif2-2.PDF, have a look at page 19 (which is page 25 of the PDF).