ISO question

**eccs19** · 12-04-2009, 07:59 AM

I'm just curious. What's better. If you've got an object that your taking a picture of in low light, and your tripod mounted, would you be better to use a low ISO and a slow shutter speed, or a higher ISO and a faster shutter speed. I'm just wondering what way would produce less noise.

Wheatfield · 12-04-2009, 08:05 AM

Try it and find out.
This way you'll know for sure.

YJD · 12-04-2009, 09:20 AM

It should be low ISO with slow shutter speeds.

Nesster · 12-04-2009, 09:52 AM

Yes, low ISO is lower noise. However, if the object is not stationary, you want a higher shutter speed.

**Ash** · 12-04-2009, 12:04 PM

As above, with the caveat that you have a lot more flexibility with still-life. Anything moving, and you want to freeze that movement, will require a higher shutter speed and therefore a higher sensitivity to allow for that.

You basically have to know what the shutter speed is you're after for the particular shot and choose your aperture and sensitivity accordingly.

Barnster · 12-05-2009, 03:48 AM

The higher the iso,the noisier and grainier it gets.But like ash says,if you want to freeze the movement best as possible,it will give you the ability to use a faster shutter speed for this.Experiment and eventually you'll work it out.

jeffkrol · 12-05-2009, 04:28 PM

Originally posted by eccs19

I'm just curious. What's better. If you've got an object that your taking a picture of in low light, and your tripod mounted, would you be better to use a low ISO and a slow shutter speed, or a higher ISO and a faster shutter speed. I'm just wondering what way would produce less noise.

The more photons the better is what I say.

Low iso also has a larger dynamic range.

12-04-2009, 07:59 AM	#1
eccs19 Site Supporter Join Date: Jul 2008 Location: Lisle, Ontario Photos: Gallery Posts: 1,510	ISO question I'm just curious. What's better. If you've got an object that your taking a picture of in low light, and your tripod mounted, would you be better to use a low ISO and a slow shutter speed, or a higher ISO and a faster shutter speed. I'm just wondering what way would produce less noise.

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12-04-2009, 08:05 AM	#2
Wheatfield Moderator Join Date: Apr 2008 Location: The wheatfields of Canada Posts: 15,975	Try it and find out. This way you'll know for sure.

12-04-2009, 09:20 AM	#3
YJD Veteran Member Join Date: May 2008 Location: Monte Vista, CO Posts: 529	It should be low ISO with slow shutter speeds.

12-04-2009, 09:52 AM	#4
Nesster Veteran Member Join Date: Oct 2006 Location: NJ USA Photos: Gallery Posts: 13,072	Yes, low ISO is lower noise. However, if the object is not stationary, you want a higher shutter speed.

12-04-2009, 12:04 PM	#5
Ash Loyal Site Supporter Join Date: Mar 2007 Location: Toowoomba, Queensland Photos: Gallery \| Albums Posts: 23,920	As above, with the caveat that you have a lot more flexibility with still-life. Anything moving, and you want to freeze that movement, will require a higher shutter speed and therefore a higher sensitivity to allow for that. You basically have to know what the shutter speed is you're after for the particular shot and choose your aperture and sensitivity accordingly.

12-05-2009, 03:48 AM	#6
Barnster Veteran Member Join Date: Jun 2009 Location: Mid North Coast,Australia Photos: Gallery Posts: 1,016	The higher the iso,the noisier and grainier it gets.But like ash says,if you want to freeze the movement best as possible,it will give you the ability to use a faster shutter speed for this.Experiment and eventually you'll work it out.

12-05-2009, 04:28 PM	#7
jeffkrol Veteran Member Join Date: Sep 2006 Location: Wisconsin USA Photos: Gallery Posts: 8,434	Originally posted by eccs19 I'm just curious. What's better. If you've got an object that your taking a picture of in low light, and your tripod mounted, would you be better to use a low ISO and a slow shutter speed, or a higher ISO and a faster shutter speed. I'm just wondering what way would produce less noise. The more photons the better is what I say. Low iso also has a larger dynamic range.

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