5d3 shutter speed

Hi. can this camera shutter speed go slower then 30seconds for long exposure? i was playing around with a 10 stop filter on sunset and couldnt go lower then 30seconds.

thanks in advance

Go to B for Bulb mode.

Cool thanks.

If you start doing this frequently and especially if you want to do very long exposures you might want to look into picking up an intervalometer.

Or try using magic lantern. It's free

Yeah, one of those timer remotes like the shutterboss if you need specific exposures >30 sec.

Voaky999 wrote in post #15666548
Go to B for Bulb mode.

+1 for this. Be mindful, though, that in bulb mode the shutter release acts differently. You press it down to open the shutter and release it to close the shutter. If you're looking to hold it down for more than a few seconds, I'd recommend getting a cable release with a locking mechanism so you won't introduce any shake by holding the shutter button down.

gotglade wrote in post #15666599
+1 for this. Be mindful, though, that in bulb mode the shutter release acts differently. You press it down to open the shutter and release it to close the shutter. If you're looking to hold it down for more than a few seconds, I'd recommend getting a cable release with a locking mechanism so you won't introduce any shake by holding the shutter button down.

uhh i have to hold it? thats no good for long exposures then

That's exactly why you'll want either a cable release or an intervalometer.

even so, how can i possibly get the correct exposure on how long i can hold the shutter button?

Trial and error. Cable releases are cheap.

If you want to save a little time then bump your ISO up to 1000. Take the shot (say 4 seconds), if it's exposed correctly then ISO100 for 40 seconds should get you the same result.

seriously is that how people do it?
to expose for say 1minute using a stop watch to time yourself. Not only that but determin how much f stop and ISO is needed to do a 1min exposure?

got to be an easier way right?

Yep, that's how I do it. Calculate your desired exposure. When you're shooting 60 seconds+, being a second or two off is not off by much.

You calculate exposure like you normally would. There's a lot of apps you can use on your phone. When you are figuring out the right exposure you need to ask yourself what is the largest apeture you are willing to use to obtain the shot and what ISO are you willing to go up to? You also need to ask yourself what are you trying to accomplish with this long exposure. People don't just go pass 30 seconds to get the right exposure while maintaing a reasonable apeture/ISO, people do it because the scene would benefit from it or have another specific reason to do so.

The first thing you need to do is find the right exposure without the filter. Assuming the 10-stop ND is accurately 10-stops (note some people find there 10-stop ND is actually 9, 11, etc..) and you don't have any other ND filters, you just add 10 additional stops to the exposure. Here's an example scenario. You have your camera setup with your cable release and 10-stop ND in hand. You want to shoot a landscape shot and figure out the exposure you want is f8, ISO 400 and 1/15 seconds. You compose your shot and prefocus your camera. You don't want to open up the apeture pass f/8 since it may not give you the right DOF for the scene from front to back. You don't want the noise pass ISO 400. So you add 10 more stop to 1/15 seconds, which equals to 60 seconds. There's some nice clouds moving towards your direction and want to exaggerate the movement even further. So you think hey why not extend the SS even longer and either go f/8 ISO 200 120 seconds or f/8 ISO 100 and 240 seconds. Put your SS in bulb mode, screw on your filter, set your cable release to the appropriate time and wait. If your shutter release doesn't have a timer, then you need to time it with your phone or stopwatch.

Trial and error my friend.

Cheers. i will get a cable release with a timer.

that will help me out by two folds.

something like this i presume?

http://www.amazon.co.u​k …U/ref=tag_stp_s​2_edpp_url