43 votes
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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 ...
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  • 526
29 votes
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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 ...
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  • 140k
26 votes

Photographing a waterfall but also have a person in foreground

Use the ambient light to illuminate the waterfall. Use a fairly powerful flash to illuminate your human subject. The quick duration of the flash will freeze her, especially if she remains fairly still ...
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25 votes
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How can I make a photo with blurred people but a sharp background?

What you are looking for is a ND (Neutral Density) filter. To illustrate, here is an example of a photo taken in daylight in a street with a ND1000 filter. The filter allowed a shutter speed of 6 ...
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  • 4,103
20 votes
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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 ...
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  • 4,845
20 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 ...
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20 votes
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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 ...
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19 votes

Hour long exposure of the sun

that purple haze is probably a color cast caused by the glass itself; the welders glass often isn't neutral color. you should be looking at solar filters, or very dark (and probably stacked) ND ...
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  • 9,166
18 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 ...
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  • 101k
18 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 ...
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  • 168k
16 votes
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What could I do to take a better picture of this outdoor fountain at night?

You wanted to use the effect of long exposures. What effects of long exposure are visible in your image? Lights are blown out. For the street lamp on the right, it seems to be ok. But the neon sign ...
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  • 8,334
14 votes
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Long exposure photos in daytime

Obviously, there was still way too much light getting onto your sensor despite the tiny aperture. Methods to avoid that: First, make sure your ISO setting is as low as possible. Use Tv (shutter ...
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14 votes

How can I make a photo with blurred people but a sharp background?

Apart from using an ND filter, you might be able to achieve the desired effect by taking multiple photos and then blending them in post processing. Either an automatic blend with "ghost removal" might ...
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  • 6,770
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 ...
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14 votes
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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 ...
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14 votes
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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 ...
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14 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 ...
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  • 168k
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 ...
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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 ...
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12 votes
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Why mirror lockup on long exposures?

The reason people recommend mirror lockup for exposures lasting several seconds is usually because they don't know any better. Mirror lockup is most effective when the shutter speed is in the range ...
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  • 168k
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 ...
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12 votes
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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 ...
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  • 168k
11 votes

What could I do to take a better picture of this outdoor fountain at night?

The question to ask yourself here: what are you trying to achieve with this photo? I'd guessing what you're thinking of the fountain and the water, but the building in the background is just as ...
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11 votes

Photographing a waterfall but also have a person in foreground

Take multiple photos, including the background without the subject present. Expose differently to fit each element. Combine in Photoshop. You can also spend more time playing with different settings ...
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  • 4,272
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 ...
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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 ...
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11 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 event (e.g., shutter released, shutter ...
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  • 5,392
10 votes

Hour long exposure of the sun

This is just the diffused light going through the welder glass. It comes from two sources: the sky and the two welder glass. (These have coplanar surfaces that allows for bouncing the light for long.)...
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  • 6,107
10 votes
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How to prevent hot pixels?

You can't really prevent hot pixels on long exposures, you can only deal with them. For a single four minute exposure the easiest way is to use what is known as Dark Frame Subtraction. Different ...
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  • 168k
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 :-)
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