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March, 2024

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Shutter Speed Help

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paco5555
Posts: 456 - Karma: 102
This may be an easy question but i have just received my t2i about a month ago and have been posting here recently about night photography etc.
First question is since i do not have magic lantern how long would i have to leave my shutter open on bulb to get a full circular star trail.
And secondly leaving my shutter open for about 15 to 30 sec will make my picture super bright during the daytime. Obviously because i am letting so much light in during a time hour...but i have seen pics of water falls or a pinwheel streak...or a game of pool with the ball streaks all during the day time. Basically i am asking how to leave my shutter open and get these kind of pics during the day time.
Aug 18 2012 10:59PM
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MLeone
Posts: 725 - Karma: 72
well you use a tripod, close your aperture up, lower your iso, and even better use a ND filter. Thats how.
Aug 18 2012 11:03PM
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edai
Posts: 4983 - Karma: 4,632
Probably this more than anything
Aug 18 2012 11:14PM
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MLeone
Posts: 725 - Karma: 72
Yus, I haz the LCW Fader ND MKII, I love it
Aug 18 2012 11:20PM
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paco5555
Posts: 456 - Karma: 102
ok thanks mleone i see this is definitely the problem can you recommend a high quality one that is less expensive though?
Aug 18 2012 11:24PM
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[J_Gasper]
Posts: 2983 - Karma: 1,594
Just get a tiffen one. You will need one to fit your lens. There are 3 different stops for tiffen ND filters. There is .3 .6 and .9. .9 is what is going to darken your image the most. I personally use a .6 for my needs. People will say that Tiffen filters arent great, but they are fine unless you get serious into photography/videography.
Aug 18 2012 11:57PM
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TijmenDal
Posts: 4849 - Karma: 1,295
Get an ND filter. That's the only way you can get long shutter speeds without overexposing your picture. Depending on what you exactly want to do, I'd get either a 2 or 3 stop (0.6 or 0.9 respectively).

If I could recommend something, I would look into Cokin P-series if I were you. Very versatile.
Aug 19 2012 2:21AM
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sweatshirt
Posts: 1357 - Karma: 483
I'm pretty sure full circle star trails are not one image but multiple images stacked in photoshop
Aug 19 2012 6:33AM
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