ISO vs. Shutter Speed

Irishwake · 09-15-2009, 09:21 PM

I'm sorry if this has been covered, but I couldn't seem to find a straight answer in my search, and this should be a simple yes/no. I have yet to purchase my first dSLR and am currently using a Sony P&S, and the only option I have in manual mode to adjust the exposure is ISO, I have no setting for shutter.

Can you adjust ISO and shutter speed independent of one another on most dSLR cameras?

Thanks!

musicaleCA · 09-15-2009, 09:22 PM

Yes.

CSR Studio · 09-15-2009, 09:25 PM

But do you understand what ISO and shutter speed are?

Irishwake · 09-15-2009, 09:43 PM

As I understand it, ISO is the adjustment of the sensors sensitivity to light. Shutter speed is just how long the shutter is open.

CSR Studio · 09-15-2009, 09:45 PM

Quote: Originally Posted by Irishwake

As I understand it, ISO is the adjustment of the sensors sensitivity to light. Shutter speed is just how long the shutter is open.

So, that would mean they would have to be independent of one another, correct?

Irishwake · 09-15-2009, 09:49 PM

Heh, well that's what I was thinking, but nowhere does it specifically state that.

I was asking because my camera boasts it's ability to adjust exposure in manual mode, and yet when I go outside to shoot pictures in manual I get massive noise because I have to set the ISO so high. Anything below ~600 ISO gets nice clarity however they are overexposed since I can't manually adjust the values.

Obviously I can adjust the balance in photoshop but, for the sake of the thread, I simply couldn't find a straight answer.

IgsEMT · 09-15-2009, 09:51 PM

joy of SLRs is that you can control EVERYTHING in it. Although, I got to say, as much as control you get in SLR, I do miss shooting medium format.

CSR Studio · 09-15-2009, 09:51 PM

Quote: Originally Posted by Irishwake

Heh, well that's what I was thinking, but nowhere does it specifically state that.

I was asking because my camera boasts it's ability to adjust exposure in manual mode, and yet when I go outside to shoot pictures in manual I get massive noise because I have to set the ISO so high. Anything below ~600 ISO gets nice clarity however they are overexposed since I can't manually adjust the values.

Obviously I can adjust the balance in photoshop but, for the sake of the thread, I simply couldn't find a straight answer.

I understand and you came to the right place. I was just helping you along in your thinking. Always helps me if I think things through even when someone gives me the answer. Sounds like you are going to be getting a new camera soon. Good luck!

Irishwake · 09-15-2009, 09:52 PM

Hopefully sooner than later, and thank you!

Samanax · 09-15-2009, 11:02 PM

Quote: Originally Posted by Irishwake

I'm sorry if this has been covered, but I couldn't seem to find a straight answer in my search, and this should be a simple yes/no. I have yet to purchase my first dSLR and am currently using a Sony P&S, and the only option I have in manual mode to adjust the exposure is ISO, I have no setting for shutter.

Can you adjust ISO and shutter speed independent of one another on most dSLR cameras?

All DSLRs give you the option to shoot in Av (Aperture Priority - you choose aperture and camera adjusts shutter speed to match), Tv (Shutter Priority - you choose shutter speed and camera adjusts aperture to match) and M (manual...you choose each setting to get the creatively correct exposure). Some offer AUTO (no input from photographer mode - camera makes all the exposure decisions) and P (Program AE Mode - semi auto mode...similar to AUTO but gives you control of some functions).

bazpaul · 09-16-2009, 02:57 AM

my camera has a "Barney the Dinosaur" mode that lets me shoot flashy things without changing any settings

09-15-2009, 09:21 PM	#1
Irishwake TPF Noob! Join Date: Mar 2006 Posts: 7 Thanked 0 Times in 0 Posts My Gallery: (0)	ISO vs. Shutter Speed I'm sorry if this has been covered, but I couldn't seem to find a straight answer in my search, and this should be a simple yes/no. I have yet to purchase my first dSLR and am currently using a Sony P&S, and the only option I have in manual mode to adjust the exposure is ISO, I have no setting for shutter. Can you adjust ISO and shutter speed independent of one another on most dSLR cameras? Thanks! __________________ Sony DSC-H20

09-15-2009, 09:22 PM	#2
musicaleCA TPF Junkie! Join Date: May 2009 Location: Vancouver, BC Posts: 2,201 My Photos Are OK to Edit Thanked 85 Times in 81 Posts My Gallery: (0)	Yes. __________________ Canon 7D, 450D, EF 70-200mm f/2.8 USM L, EF-S 10-22mm f/3.5-4.5 USM, EF-S 55-250mm f/4-5.6, EF 50mm f/1.4, EF 24-70mm f/2.8L USM, EF-S 17-85mm f/4-5.6, Speedlite 550EX, 2x 580EX II, ST-E2 - _S U P P O R T___ T H E___ P A C T_ - Flickr Model Mayhem ImageKind

09-15-2009, 09:43 PM	#4
Irishwake TPF Noob! Join Date: Mar 2006 Posts: 7 Thanked 0 Times in 0 Posts My Gallery: (0)	As I understand it, ISO is the adjustment of the sensors sensitivity to light. Shutter speed is just how long the shutter is open. __________________ Sony DSC-H20

09-15-2009, 09:49 PM	#6
Irishwake TPF Noob! Join Date: Mar 2006 Posts: 7 Thanked 0 Times in 0 Posts My Gallery: (0)	Heh, well that's what I was thinking, but nowhere does it specifically state that. I was asking because my camera boasts it's ability to adjust exposure in manual mode, and yet when I go outside to shoot pictures in manual I get massive noise because I have to set the ISO so high. Anything below ~600 ISO gets nice clarity however they are overexposed since I can't manually adjust the values. Obviously I can adjust the balance in photoshop but, for the sake of the thread, I simply couldn't find a straight answer. __________________ Sony DSC-H20

09-15-2009, 09:52 PM	#9
Irishwake TPF Noob! Join Date: Mar 2006 Posts: 7 Thanked 0 Times in 0 Posts My Gallery: (0)	Hopefully sooner than later, and thank you! __________________ Sony DSC-H20

09-15-2009, 09:25 PM	#3
CSR Studio I spend too much of my life on TPF! Join Date: Aug 2009 Location: Georgia Posts: 452 My Photos Are OK to Edit Thanked 12 Times in 11 Posts My Gallery: (0)	But do you understand what ISO and shutter speed are?

09-15-2009, 09:45 PM	#5
CSR Studio I spend too much of my life on TPF! Join Date: Aug 2009 Location: Georgia Posts: 452 My Photos Are OK to Edit Thanked 12 Times in 11 Posts My Gallery: (0)	Quote: Originally Posted by Irishwake As I understand it, ISO is the adjustment of the sensors sensitivity to light. Shutter speed is just how long the shutter is open. So, that would mean they would have to be independent of one another, correct?

09-15-2009, 09:51 PM	#7
IgsEMT TPF Junkie! Join Date: Jul 2009 Location: NYC Posts: 1,373 My Photos Are NOT OK to Edit Thanked 65 Times in 63 Posts My Gallery: (0)	joy of SLRs is that you can control EVERYTHING in it. Although, I got to say, as much as control you get in SLR, I do miss shooting medium format.

09-15-2009, 11:02 PM	#10
Samanax TPF Junkie! Join Date: Jan 2009 Location: Kaneohe, Oahu Posts: 2,559 My Photos Are OK to Edit Thanked 64 Times in 64 Posts My Gallery: (0)	Quote: Originally Posted by Irishwake I'm sorry if this has been covered, but I couldn't seem to find a straight answer in my search, and this should be a simple yes/no. I have yet to purchase my first dSLR and am currently using a Sony P&S, and the only option I have in manual mode to adjust the exposure is ISO, I have no setting for shutter. Can you adjust ISO and shutter speed independent of one another on most dSLR cameras? All DSLRs give you the option to shoot in Av (Aperture Priority - you choose aperture and camera adjusts shutter speed to match), Tv (Shutter Priority - you choose shutter speed and camera adjusts aperture to match) and M (manual...you choose each setting to get the creatively correct exposure). Some offer AUTO (no input from photographer mode - camera makes all the exposure decisions) and P (Program AE Mode - semi auto mode...similar to AUTO but gives you control of some functions). __________________ Gear List / My Flickr

09-16-2009, 02:57 AM	#11
bazpaul No longer a newbie, moving up! Join Date: Sep 2009 Location: Australia Posts: 30 My Photos Are OK to Edit Thanked 0 Times in 0 Posts My Gallery: (0)	my camera has a "Barney the Dinosaur" mode that lets me shoot flashy things without changing any settings __________________ Canon EOS 500d/Digital Rebel T1i 18-55mm f/3.5-5.6 IS I have no tripod, i have only dreams!

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