44
votes
Accepted
What are the reasons for not taking super long exposures (hours) in astrophotography?
@Michael Clark and @Itai have provided good answers. A few more thoughts from the perspective of the enthusiastic amateur:
Tracking technology isn't perfect and sometimes its better to work within ...
- 536
30
votes
Accepted
Why did my ND filter produce washed out exposures?
You've got the sun almost in the frame. This is causing huge amounts of veiling flare — light bouncing all around, reducing contrast. You'll get better results from a different angle, or at a ...
- 143k
21
votes
Why does my Canon 700D take so long processing when I take a long exposure?
To reduce the processing time for long exposures, you want to turn off Long Exposure Noise Reduction. However, you may not want to give up the benefit of LENR.
Long Exposure Noise Reduction (LENR) is ...
- 175k
20
votes
Accepted
How can I take a long-time exposure of water without a grey filter?
You can merge multiple short exposure photos into a single long exposure image. There are a lot of tutorials on the net, for example:
https://www.youtube.com/watch?v=nAuQWfS3pLg
Basically, he opens ...
- 5,060
20
votes
Accepted
Can I stack ND Filter and Polarizer together?
Absolutely you can. Many square filter holders are specifically designed for this:
The Lee Filters systems (Sev5n, 100mm) have optional front threaded rings designed to hold a polarizer in front of ...
- 32.3k
19
votes
What are the reasons for not taking super long exposures (hours) in astrophotography?
It is firstly because we can now.
Bulb photography can indeed shoot exposures of minutes to several hours, depending on the camera. Using a film camera, astrophotography is done with very long ...
- 103k
19
votes
What are the reasons for not taking super long exposures (hours) in astrophotography?
The main advantage of stacking is to average out the randomized Poisson distribution "shot noise" that can be a problem in low light images such as astrophotography. Another advantage for stacking ...
- 175k
15
votes
Why did my ND filter produce washed out exposures?
Why did my ND filter produce washed out exposures?
You're shooting straight into the sun with a dirty, unshaded, and flat surface on the front of your lens.
The image demonstrates all three classic ...
- 175k
14
votes
How can I get a clear subject with motion-blurred (traffic trails) background?
If the camera is on a tripod, and we assume little or no camera movement, then there are two possibilities.
Most likely, at 3", your brother is not going to stay perfectly still and there will be ...
- 33.3k
14
votes
Accepted
Do you need to remove the camera (neck/shoulder) strap when using it on a tripod?
Is it usually safe to leave the camera strap on the camera body itself for long exposure shots?
It's fine. If you're concerned about wind catching the strap and causing blur (or even flying up into ...
- 31.7k
14
votes
Accepted
Is there any way to take stable Long exposure photos without using Tripod?
I just try to see if there's any stable surface available nearby and try to use it
That's the basic idea.
Be careful to watch for slight slippage. Also note that vibrations can also affects the ...
- 6,385
14
votes
How to get soft-blur effect on flowing water with iPhone?
The easiest way is to take a Live Photo, then while viewing it in the Photos app, swipe up to access effects and choose Long Exposure. This will blend the frames of Live Photo together into a single ...
- 241
14
votes
Accepted
Does the EXIF data "DateTimeOriginal" get recorded at the start or end of the exposure?
The EXIF standard describes the DateTimeOriginal tag simply as "the date and time when the original image data was generated." It gives no guidance about what ...
- 5,532
13
votes
Accepted
Taking a skyline photo with a person closer to the camera during night time
You can do this with a single exposure. Use a longish shutter speed to expose the background and the flash to properly expose and freeze your subject. You'll likely need to have your camera on a ...
- 175k
13
votes
Does the EXIF data "DateTimeOriginal" get recorded at the start or end of the exposure?
Experimentally (on my EOS 70D), this is the beginning of the exposure, and not the end.
But:
this seems truncated to the second
it depends how accurate is the time of the camera (before doing this ...
- 20.6k
12
votes
Is there any way to take stable Long exposure photos without using Tripod?
On a tight budget or when you can't use a tripod, bean bags are the way to go. Find a stable surface, place the bag and wiggle the camera around until you are happy with the framing.
FYI ordinary ...
- 1,128
11
votes
Any alternative for manual cable releases?
You can hold it down with your finger. That's the only other option.
Cable releases are inexpensive and easy to get. Your only issue might be the tight timeline you've left yourself, but if you ...
- 1,760
11
votes
Does a long exposure in DSLR camera have a similar effect to a global shutter?
I think you've slightly misunderstood how the shutter works. Initially, the first shutter covers the sensor and the second does not. The first shutter then slides away to expose the sensor, and the ...
- 1,340
10
votes
How can I take a long-time exposure of water without a grey filter?
Assuming you're doing the obvious - setting ISO to the minimum and using the smallest aperture you can - then there's nothing else you can do without an ND filter. They're not that expensive :-)
- 21.8k
10
votes
Accepted
How can I improve my fireworks photography?
Think about what happens in a fireworks display. Essentially, the sky is black. Within the sky, a series of bright lights turn themselves on and then off in random places. The important thing to ...
- 1,340
9
votes
How can I get a clear subject with motion-blurred (traffic trails) background?
The issue that you are having is that your brother may appear to be still for the 3 seconds of your shutter speed but even breathing can impact the photo from being sharp. He is still moving even ...
- 1,140
9
votes
What are the reasons for not taking super long exposures (hours) in astrophotography?
Digital sensors heat up over long exposures; I've had exposures as short as 6 minutes exhibiting very visible colour distortion in the corners of the frame. Run the chip continually for hours without ...
- 622
9
votes
Accepted
Why is my 2 second long exposure shot overexposed?
We have no idea of the brightness of the scene you are photographing. Are you on a Mediterranean beach? In a forest at night? Put the camera on automatic, take a photo, and see what iso, aperture and ...
- 11.7k
9
votes
Accepted
How many stops should I compensate for with SFX200 and Hoya R72 Filter?
SFX200 is sensitive to light up to 740nm.
The Hoya R72 blocks all wavelengths up to 720nm.
So, first and foremost, you need to be aware that you are photographing a range that you can't see and your ...
- 20.5k
9
votes
Accepted
How to improve my milky way shot?
Your image has a severe case of light pollution, there isn't much contrast and the horizon is drowned. The bottom of the picture is much lighter than the top and this seriously reduces your editing ...
- 20.6k
9
votes
Black smudges during long exposure shots? What are these called and why are they there?
Not a problem with your equipment. They are reflections of the clouds. Non-smooth water will cause vertical smears. The effect is subtle here, but it is more obvious when the sun is reflected.
Why ...
- 1,192
8
votes
What is this bright squarish pattern that I'm getting in long exposure images?
It is a hot pixel.
The reason it makes that little checkerboard shaped mark is because of the way digital cameras use single luminance values for each pixel to create color information by filtering ...
- 175k
8
votes
How can I get smooth water and a city skyline including the city light with a bright sky?
This looks to be a fairly standard long exposure. The shutter speed needs to be slower than the 'period' of the waves (or 1 over the frequency) - this will cause the water to look flat. The colour ...
- 2,337
8
votes
Is there any way to take stable Long exposure photos without using Tripod?
If inexpensive tripods are too expensive, I suggest making your own stable platform. The tripod socket on cameras is 1/4" × 20 thread-per-inch UNC, a.k.a. 1/4-20. (Do not try to use metric, such as M6-...
- 32.3k
8
votes
Photostacking - Why does this technique fail for my astrophotos?
You have to remap the images such that the stars are aligned precisely, this requires pixel level aligning throughout the entire picture. This is best done with specialized software, such as Hugin (...
- 3,596
Only top scored, non community-wiki answers of a minimum length are eligible