Fresh Dew on a Rose

by adarsha joisa

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visits member for 3 years, 4 months
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Sep
10
comment Can the camera select wrong exposure just because of color?
@enthusiast: The histogram is just a plot of levels of brightness on the X axis and how many pixels are at that level on the Y axis. Usually this is done for the color channels plus one of the overall level. What I looked at was multiple histograms for small crops within the petal areas of each flower. The red picture's crops showed pretty consistent amounts of light all the way around where the white's showed less light on its right side than on the left. I did that as a way to quantitatively determine if one side was brighter than the other in case my eyeballs were off.
Sep
10
comment Can the camera select wrong exposure just because of color?
@enthusiast: I just took a look at the histograms for several square areas that consisted of just the flower petals. The red one is pretty evenly exposed all the way around, but there's a definite shift in brightness between the left and right sides of the white one. That difference will have an effect on what the metering system sees.
Sep
9
answered Can the camera select wrong exposure just because of color?
Sep
9
comment Motorola Razr Maxx compression removal
@Francesco: The Camera API has allowed applications to set the compression level since API level 5 (Eclair). API level 8 (Froyo) brought camera profiles which have high, medium and low quality levels determined by values in the file I suggest modifying. If Mak cares to burn rep on a downvote for my answer, I'll be more than happy to rebut it by pointing out the places in the Android source where all of this happens. At any rate, the proof is in the pictures. Thanks for pointing this out.
Sep
9
answered Nikon Vertical Shutter Button Switch
Sep
5
answered How to reduce the image resolution to increase ppi?
Sep
4
awarded  Yearling
Sep
3
answered Lomography Diana for a novice photographer
Sep
2
awarded  Quorum
Aug
29
comment Practical Difference Between Nikon 80-200 f/2.8 and 70-200 f/2.8?
The 70-200 is an amazing lens, but the last few generations of the 80-200 were good in their own right, too.
Aug
27
revised Are the perspective control advantages of a tilt shift lens less important on higher resolution cameras?
Fixed expletive typo in title
Aug
27
revised Are the perspective control advantages of a tilt shift lens less important on higher resolution cameras?
Fixed expletive typo in title
Aug
27
suggested approved edit on Are the perspective control advantages of a tilt shift lens less important on higher resolution cameras?
Aug
27
comment Why do camera manufacturers use different lens mounts?
The Four Thirds systems are maintained by a consortium of seven manufacturers of which Olympus and Panasonic are two. Other than Sigma, manufacturers that currently have proprietary lens mounts are notably absent from the consortium's roster.
Aug
27
comment How do I get the high contrast sharpness seen in this B&W portrait?
...And since there's going to be post, shoot in color and do the conversion there. The camera gives you exactly one choice about how the conversion is done, and if you don't like it, you're stuck with trying to adjust it. Shooting raw wouldn't hurt, either.
Aug
26
comment Do professionals use auto mode?
Automatic anything is just another tool in the tool box. Someone who's good at what they do (as opposed to someone who does it for a living) knows when to use which tools.
Aug
24
revised What are hidden-gem “bang for the buck” lenses for Nikon?
Typo
Aug
24
revised What are hidden-gem “bang for the buck” lenses for Nikon?
added 142 characters in body
Aug
23
answered What are hidden-gem “bang for the buck” lenses for Nikon?
Aug
21
comment What advantages does 35mm film have over high-end digital?
Film underwent constant improvement during its lifetime, too, but you got the improvements each time you bought your first roll of the new film. The economics still favor a new digital body every couple of years: A Nikon D800 at $3,000 costs the equivalent of 300 36-exposure rolls of C-41 film and processing (without prints) at a decent lab. That's a total of 10,800 frames, which I shoot easily in two years. Downgrade to a D300 ($1,700, 170 rolls, 6,120 frames) or a D5100 ($850, 85 rolls 3,060 frames) and it still becomes pretty easy to justify a new body even if you don't shoot as much.