India Point Park

India Point Park
by matt-ball                

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Dec
30
comment Why do electronic shutters expose row by row?
@JanDvorak Yes, I meant frame-transfer CCD. Thanks for reminding the correct term.
Nov
12
comment Why does the flash freeze a picture?
@hobbs Thanks for pointing this out. Yes, changes in exposure parameters have the same effect regardless whether they were triggered directly by photographer or by camera software. I hope my rewording expresses it better.
Oct
28
comment Silence my Pentax k1000
In low-light, lock-up could be simulated using bulb mode and some external object acting as shutter. But mirror lock-up would not really eliminate the sound, just change its timing. There is an option though, putting the camera inside a sound blimp.
Oct
19
comment How can I capture an image like the stars over a landscape as in the Ubuntu Forever wallpaper?
@Pacerier it's hard to tell, but I don't see any obvious tells of heavy post-processing. There's a fair amount of noise. As AJ Henderson mentions in his answer, it could be just some basic color touch-up.
Sep
23
comment Can anybody suggest a camera and flash combination for high speed, fast recycle time, night time photography?
What are you trying to achieve with shutter speeds faster than max sync speed? With High Speed Sync, the flash has to blink several times and therefore exposing the frame takes more time than with a single strobe of light. You're also getting worse flash-to-ambient ratio, because you're wasting as much of flash as you're killing off ambient; meanwhile, the flash has to be weaker to recycle fast enough.
Sep
16
comment How could I have counteracted purple lighting?
@MichaelClark No, skin isn't actually blown out in any channel. Red channel histogram fades off below 220, and blue is only blown in moderate amount on some shirts - nothing too bad, detailed out nicely by other channels. Removing the blue channel would mean, with this kind of lighting, eliminating the most useful (least noisy) channel.
Sep
12
comment Why do DSLR cameras still use monochrome LCD as their top displays?
The question is not talking monitors, but displays, which is a wider concept. Segment displays, instrument panel lights, needle displays are some examples of non-raster displays.
Sep
1
comment Is there any library other than gphoto2 to use remote capture in Canon G10?
Are you asking for faster shutter speed, less shutter lag or higher frame rate? What are you current results? Regarding frame rate, continuous shooting with G10 is limited at 0.6 fps with continuous AF and RAW, 1.4fps without; no software would speed up past that.
Aug
26
comment How can I extract still frames from an MPEG video with Photoshop?
Before voting to close this question as a purely video-related question, please consider that extracting video frames is sometimes suggested as a workaround for some still photography problems, e.g. long shutter delay, short maximum exposure time or low frame rate.
Aug
10
comment What is the purpose of a dual LED flash?
@androiddeveloper Yes, its LEDs were of different color, as explained in the answer.
Aug
10
comment What is the purpose of a dual LED flash?
@androiddeveloper I'm afraid that would be hard to determine. It was rarely hyped as a feature before iPhone 5s. For example, my Sony-Ericsson K750 (a feature phone from 2005) had dual LED, but specifications usually mention only LED flash.
Aug
7
comment Why does exposure vary subtly between P, A and S modes, when the flash is on?
Slow sync affects timing of the flash, not metering (i.e. "when", not "how much").
Aug
6
comment Why does exposure vary subtly between P, A and S modes, when the flash is on?
Canon DSLRs meter flash to be a main light in P mode and fill light in Av/Tv mode. Perhaps Sony makes a similar distinction?
Jul
7
comment How to photograph low light indoor sport?
Underexposing to keep ISO lower will eventually result in more noise after post-processing correction than using correct ISO would, see Is it better to shoot with a higher ISO, or use lower ISO and raise the exposure in post-processing?
Jun
19
comment Why is the focus indicator light always on in single point focus mode on my D7000?
@AnedaSmith Yes. With thin depth of field, using focus point closest to subject final framing will generally improve focus accuracy. In certain situations, closest cross-type focus point may have an advantage.
Jun
18
comment What algorithm can I use to simulate bokeh?
Perhaps this would help: What's the difference between Bokeh and Gaussian Blur?
Jun
15
comment Why does my Canon DSLR stop recording video automatically?
My 2 cents: it's on topic because if the problem really is caused by slow SD write, it would likely also affect burst mode shooting limits
May
29
comment What exactly is flash sync speed, and should it be a factor in a buying decision?
Note that when action is so fast that faster than sync speed shutter is needed to freeze it, there will be rolling shutter artifacts visible because capture time of edges of the frame is still sync speed apart.
May
29
comment What's the difference between CCD and CMOS image sensors?
@smigol That is indeed how fast sync works, but it will be less efficient regarding flash to ambient light ratio.
May
28
comment Is analog gain really actually power-of-two only?
I doubt it's nitpicking when shooting JPEG, where the idea might be to avoid need for post-processing as much as possible, and there's much less leeway in dynamic range.