Apples

Apples

by Garik

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1,775 reputation
614
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location Norway
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visits member for 2 years
seen 22 mins ago
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Hobbyist photographer with a Nikon D5100.

I started doing photography in the late '70s (I was 10, and got a Minolta SR-1 from my father when he bought a Nikon F), but shelved the hobby in the late '80s. Picked it up again last year, this time with digital equipment.

Philosophically, I think photography is not much about representing reality. Although there is a subbranch of photography that does specialize in representing reality faithfully, those photos tend to be fairly dull (think passport photos or surveillance cameras).

To quote The Luminous Landscape:

The problem with reality is that it is often far too real.

When photos are for entertainment, art or decoration (as opposed to documentation), we don't want reality. We want drama, interesting colors, attention-grabbing tableaus. Or black-and-white subjects hunched over against the storm while trundling across an endless bleak plain, but in any case something that differs from day-to-day reality in some interesting way.

So I consider photography to be just as much about photoshopping as it is about wielding a camera. Whether you get a particular effect in camera or through software doesn't matter much. That's just a technicality, and the choice between in-camera and in-post boils down to what's the simplest way to achieve any given effect.


Dec
17
comment Where can I find photos taken by a calibrated camera to make a 360° panorama?
As homework, I'll suggest that you do the first step too. If you are expected to know how to calculate cylindrical coordinates from FOV, it's trivial: Wikipedia has an angle of view table and a formula. Apart from that you need a camera, to look up the specifications for the sensor dimensions and to take a few shots. I expect it will be simpler than to find the pictures you are asking for - most photographers don't publish all their intermediate steps, especially not at the level of "what was the field of view".
Dec
15
comment Are meteors dim?
@jrista You may be right, your meteor photos certainly turned out very nice. Regarding exposure time, I would think that the only way to reduce the time-on-pixel ratio between meteors and stars is to have a shutter speed faster than the stars' time-on-pixel from the Earth's rotation. Your 4s exposure may have done that. (After the star has moved elsewhere, the original pixels receive no more light, so additional exposure time should be irrelevant except for noise. I think.)
Dec
14
comment Are meteors dim?
@PaulCezanne I think it makes sense if you consider that each pixel/sensel is exposed independently. If the stars move say 10 pixels in 60 seconds they get an effective exposure time of 6 sec per pixel, while the meteor may move say 200 pixels in two seconds and get an effective exposure time of just 1/100th of a second per pixel. As per Matt Grum's answer, the only in-camera fix (that I know of) is to increase ISO or aperture.
Dec
14
answered What does “Flat Field Focus” mean?
Dec
13
comment Is it possible to get a double exposure with a digital camera?
I think I've seen it happen by accident when the camera tries to balance low ambient light and fill flash. Would probably need a tripod to get both a sharp picture and long enough exposure time to make a moving subject invisible in the ambient exposure.
Dec
10
comment Is a low-resolution scan of B&W negatives expected from a drugstore?
Reasonably cost- and time-effective: Scan all negatives cheaply at low resolution, pick the winners, and re-scan the few winners professionally.
Dec
10
comment How to achieve pictures filled with light like these?
Source for the top two images: Fabersky photography.
Dec
9
comment Is there a webcam that can focus to infinity, for time-lapse landscapes?
@jrista I can't speak for the OP, but for me: Long-term timelapse. Because I worry about shutter wear (entry-level DSLR 50k shutter actuations = 30 min video @ 30fps). Because of weather-proofing - not that webcams are weatherproof, but I expect they can handle more abuse than the average SLR. Because I don't want to be without a camera for 6 months (assume I want a winter-spring-summer time lapse). Because the loss of a €100 webcam, if it breaks or gets stolen, is less than the loss of a €1000 DSLR. If there are better options, I'm all ears.
Dec
9
comment How can I find a camera for long-term time lapse use?
There's also wireless USB extenders, around $400. The advantage over USB to IP (or WiFi) is that it's hardware only and thereby OS agnostic, it doesn't need a dedicated driver on the PC.
Dec
8
comment How can I find a camera for long-term time lapse use?
+1, I like the weather proofing and image quality. For the Hero 3 Black Edition I don't think you need the power hack - according to the user manual, "you can charge the camera's battery while recording video or taking photos", so just leave it permanently plugged in. Two challenges: 1) The longest time lapse interval that can be set is 60 seconds, and I can't see a way to connect a third-party intervalometer. 2) The built-in wifi is only for remote control, it won't transfer files, so you'll still need a USB cable, some form of wireless USB, or some way to hack around the limitation.
Dec
7
comment How can I find a camera for long-term time lapse use?
I'm looking for something similar. So far, DSLRs seem problematic due to limited shutter life. How about using a smartphone as a webcam? You can choose between wifi and bluetooth for the tethering, and will only need a power source. Low-light performance won't be great, but it might be sufficient. And I don't know the life expectancy of a smartphone camera when used like this, it's probably slightly outside the design parameters :)
Dec
6
comment How does fading light affect color vision?
It's apparently called the Purkinje effect. Agree that it would be an interesting project :)
Dec
6
awarded  Nice Answer
Dec
6
revised What is the “Rule of 600” in astrophotography?
added 36 characters in body
Dec
6
comment What is the “Rule of 600” in astrophotography?
@mattdm Yes, it matters, see the update. But the derivation is for the worst-case scenario.
Dec
6
revised What is the “Rule of 600” in astrophotography?
Added picture, example for crop sensor, celestial pole/equator movement, attempted language cleanup
Dec
5
answered What is the “Rule of 600” in astrophotography?
Nov
26
comment DSLRs with separate controls for aperture and shutter?
Where to set the go-dark timers: Menu button - Setup menu (the wrench) - Auto off timers. (Page 140 in the user manual )
Nov
2
comment Why do I have to covert NEF files to JPEG to open them?
+1 for the NEF codec, I wasn't aware that it existed. Makes it simpler to browse through image folders.
Nov
1
comment Why is the amount of photos that fit on one card dependent on ISO?
@BartArondson Yes, high ISO = more noise. If you're referring to Matt Grum's post on "lower ISO isn't always better", he's just saying that when there's too little light for proper exposure at base ISO, amplifying the signal in camera (through higher ISO) gives less noise than underexposing and recovering in post. So low ISO = low noise (assuming proper exposure, i.e. long shutter speed), high ISO = more noise, and base ISO + underexposing umpteen stops + recovering in software = most noise.