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Long exposures are taken with shutter speeds generally longer or much longer than one second, in order to capture stationary objects in low light while blurring or obscuring moving elements.

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4
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2answers
352 views

What is the effect of long exposure on file size?

Is it a rule that long exposure will produce a larger size file compared to a shorter exposure? It seems logical, since you are writing more data to the memory card when you expose for more time. ...
3
votes
5answers
2k views

Using long exposures to make videos?

I would like to make a video that essentially shows a long exposure progressing as it is exposed. Essentially it would be initially dark and gradually get lighter. Lights that pass in front of the ...
3
votes
1answer
387 views

Why does my camera make a whirring noise during a long exposure?

I have a Sony Alpha a55. When I take a long exposure photo, while the shutter is open, the camera makes a whirring sound. What causes this noise and why is it necessary to the camera's operation? ...
1
vote
2answers
426 views

Blurred water effect

I have recently purchased a DSLR ( Canon EOS 500D) and am going to Rome in May with it. As you will probably know Rome is quite well known for its great fountains. When in Rome I wanted to try to take ...
0
votes
2answers
694 views

How do I lengthen shutter speed with out washing out the picture?

I read this question, and I tried some long exposure shots myself. Every one of my shots though, is washed out. How do I achieve a long shutter speed while keeping the lighting looking natural?
5
votes
4answers
6k views

How can I set an exposure time over 30 seconds with a DSLR?

Most DSLRs have an exposure time limit of 30 seconds. Now I'm asking myself how is it possible to create images about over 1 hour or longer, like these two: ...
4
votes
4answers
591 views

Why are these light trails large blobs of light instead of nice thin lines?

I'm trying to shoot a traffic light trails with my point & shoot camera (Panasonic Lumix DMC-LZ8). But the oncoming vehicle headlights are appearing as large blobs of light and not exactly thin ...
5
votes
1answer
537 views

Is astrophotography basically pointless with a moon in the sky?

I want to take some astrophotography shots of objects in the sky while not keeping the moon in the shot. I have read in a few places that you need essentially a moonless sky to do so. Does that mean ...
8
votes
2answers
406 views

What type of camera setup is required to take photos of luciferase?

I'm working with luciferase which has a wavelength of blue 480 nm and I want to be able to take a photo of it. The trouble is, I can see the luciferase glowing in all of its glory in front of me but ...
6
votes
5answers
1k views

Does long exposure affect the sharpness of a picture, assuming no camera shake?

Assuming that the camera does not shake during long exposure photography, How does the sharpness of the image get affected? Would it be more sharp, less sharp, or remain the same?
8
votes
2answers
807 views

Where does the noise come from in a long exposure?

I created another test. This time I exposed for 36 minutes, because I wanted to test star photography. This is not meant to be a nice photo; I really just tested. Camera was inside the house behind ...
1
vote
2answers
417 views

What causes strange spiral pattern on my star line?

Ok, so I created this test image. The camera was behind the window, I just tested long exposure photography on the single star I saw. It was about 20 minutes of expo, star was out of focus (I really ...
8
votes
3answers
2k views

Will long exposure night shots damage my camera?

I've been looking into long exposure photography for star tracking. How does it negatively (if at all) affect your camera?
6
votes
4answers
214 views

Situations you might use USB remote mode?

I hooked up the 50D to my MacBook Pro the other day at home and found it great to see exactly how a photo is going to turn out on the big screen before taking it and was wondering when such a setup ...
14
votes
3answers
3k views

What are neutral density filters and how do I use them to create long exposures in daylight?

I've seen a few related posts on the site but nothing specifically on this point: I'd like to be able to take long exposure photos during daylight (like the examples in this Flickr group). I'm told ...
2
votes
1answer
531 views

What is the battery consumption of the Canon EOS 20D in bulb mode?

What is the estimated battery consumption when using bulb mode for an exposure about an hour long? I know the best thing is to test it out, but I'm not in position to do that right now. Camera is ...
7
votes
1answer
328 views

Why don't we get hot pixels when using live view?

Why don't we get hot pixels while using live view mode, but do get then on a long exposure? I read somewhere that they appear due to the sensor being activated for too much time, but then, live view ...
3
votes
3answers
536 views

Why is dark-frame subtraction on my Pentax camera shorter than the exposure time?

When my Pentax K-r applies long exposure noise reduction (dark-frame subtraction), the processing time required for this operation is less than the exposure time. For example, my camera may perform ...
24
votes
3answers
3k views

How do I meter for long exposures (10+ minutes)?

One of my longstanding interests is long exposure night photography. However, many of the situations where I am shooting require exposure lengths on the order of 10 minutes, which is far beyond what ...
9
votes
2answers
441 views

What filter should be used to lengthen exposure?

I would like to take long exposure shots in the day, but I just can't imagine how to do it because even fireworks (night shot) exposed for more than five seconds are too bright. I did some research, ...
10
votes
4answers
732 views

Where does this reflection come from in a long exposure shot?

Using a long (10 second) exposure I found I was getting an odd "reflection" in the picture, where the brightest object leaves a residue in the opposite part of the frame. You can see it here: I ...
15
votes
4answers
14k views

How can I avoid star trails without an expensive tracking mount?

I want to take pictures of the Milky Way or a lunar eclipse or earth glow on the moon, but I don't have an equatorial tracking mount, and don't want to spend that much money on one. How can I get ...
30
votes
6answers
2k views

What is the best technique for long-exposure photography in good light?

Can anyone offer any tips on achieving long exposures (with the intention of blurring water, clouds etc)?
6
votes
4answers
7k views

What does “long exposure” mean?

Very often, when people are talking about photography, they use the expression "long exposure". Here's a quote from a recent answer: A tripod and long exposure were required for this shot. Where ...
6
votes
3answers
580 views

Do I need a special filter to shoot candles without damaging my sensor?

The guy from the photo shop pointed out to me that I need special filters if I want to shoot directly to the sun with long exposures in order to not ruin the sensor. Is this the same when I shoot ...
0
votes
1answer
836 views

Long exposure mac / android apps?

I would love to start playing around with long exposure photography, more specifically light painting. I sadly don't have any camera except the iSight built into my Macbook Pro and my mid-range ...
0
votes
1answer
439 views

Tips for photographing long star trails [duplicate]

Possible Duplicate: Tips for landscape+stars photography? I need some tips and tricks for photographing long star trails. Some of the questions I am thinking about are: What aperture/ISO? ...
7
votes
1answer
777 views

How to turn off the LCD while taking long-exposure photos?

I'm using a Canon SX210 IS with CHDK. I know that capturing long exposition photos is a "battery draining" process, but it could be better. Why should the LCD's backlight be on while taking the photo? ...
5
votes
1answer
341 views

Explanation please: Pictures look inverted while making long exposure photograph

I have a 5 year old Point and Shoot (Nikon 4600). Though it has very limited capabilities , I have been learning lot of things related to photography from it. I was trying to make some long exposure ...