ISO 100 1/4000 the same as ISO 200 1/8000?

[MOREGONE]

Hello,

I just picked up the D700 as a 2nd body and have been excited to have the 1/8000 shutter speed for the bright Phoenix days. But I didn't know the native ISO of the D700 was ISO 200 and now I am thinking that I won't really see the benefit of the 1/8000 shutter compared to the D600's 1/4000 considering the native ISO of the D600 is 100.

So is ISO 100 1/4000 the same as ISO 200 1/8000? I've never been the strongest at knowing my stops of light.

Thanks

 

[Braineack]

Or, 1/4000 f/2.8 = 1/8000 f/2

 

[WayneF]

Hello,

I just picked up the D700 as a 2nd body and have been excited to have the 1/8000 shutter speed for the bright Phoenix days. But I didn't know the native ISO of the D700 was ISO 200 and now I am thinking that I won't really see the benefit of the 1/8000 shutter compared to the D600's 1/4000 considering the native ISO of the D600 is 100.

So is ISO 100 1/4000 the same as ISO 200 1/8000? I've never been the strongest at knowing my stops of light.

Thanks

Yes, sure it is the same.

Read here: equivalent exposure - Google Search

Also the slightest trial and error tries explain much. Best way to learn.


If we increase ISO to double, then stop down aperture one stop, OR increase shutter speed, one stop.

 

[480sparky41 40]

ISO 100 to 200 is a one stop increase.
1/4000 to 1/8000 is a one stop decrease.

+1-1=0.

 

[jaomul]

Exposure is the same. Quality of the shot may differ. Some sensors work better at iso 100, some at 200. It is likely so close though about 0.1% of people could tell the difference

 

[MOREGONE]

thanks everyone

Now I just need to get my CF card in the mail and I will throw some actuations through this bad boy!!

 

[Mach0]

thanks everyone Now I just need to get my CF card in the mail and I will throw some actuations through this bad boy!!

You'll love it

 

[MOREGONE]

Came with the MB-D10 grip too, super excited to use it. Has 42k clicks on it but is like new. It was mounted along with 4 other D700's in a sport arena and hardly handled.

 

[Mach0]

Came with the MB-D10 grip too, super excited to use it. Has 42k clicks on it but is like new. It was mounted along with 4 other D700's in a sport arena and hardly handled.

I have mine and noooooo complaints- of course I don't print huge prints but I still don't have any issues.

 

[jaomul]

Enjoy. D700 is a fine camera.

 

[sk66]

No, they are not the same. As far as exposure goes, yes it's an equivalent change. But there's a lot more to it...

Since they are both at base ISO the noise/sensor IQ should be optimal but 1/8000 is 1/2 the light getting to the sensor. The sensors are not of the same generation nor pixel count/size so I can't say what that difference will mean... at base ISO's it's probably negligible.

But 1/8000th is twice the stopping power for action photography.
ISO 200 base is twice the sensitivity to light which means you need less. That means you can use a higher SS in darker environments (actually any environment). It means you can use slower lenses and more optimal apertures more effectively (unless you're one of the f/1.x people in which case it could be a negative). And it means that if you have to add light you only need 1/2 as much power (your flash is twice as powerful).

The D700 also has a higher flash sync speed and that also makes your flash/lighting more powerful. (w/ ISO constant, a higher sync speed means a larger aperture is used to achieve it which makes the flash more powerful).

There are reasons why the D700 is still a very popular camera...

 

[MOREGONE]

Yes but my point was I will not be able to shoot more easily outdoors in the bright part of the day any differently than I could with my D600. If it were ISO 100 and 1/8000 I would be gaining a stop of light adjustment but in reality they are par.

I don't expect to need 1/8000th to freeze the action as I don't shoot sports or fast moving object (but I guess that could always change)

 

[imagemaker46]

I just take pictures.

 

[scorpion_tyr]

You shouldn't notice a big difference in image quality from ISO 100 to 200. And in all honesty shooting at 1/8000, even on bright sunny days, you'll probably be shooting at a higher ISO anyways, depending on what your aperture is. For most situations you'll probably never need 1/8000, but when you think about it, it's twice as fast as 1/4000, so it is a big difference. For these shots 1/4000th just wouldn't have worked at all:

 

[KmH]

Twice as fast is 1 stop. One stop less exposure in the case of shutter speed - with no other exposure triad setting changes.
1/2 as fast is 1 stop. One stop more exposure in the case of shutter speed - with no other exposure triad setting changes.

1/8000 delivers 1/2 as much light as 1/4000 does.
1/4000 delivers 2x more light than 1/8000 does.
1/2000 delivers 2x more light than 1/4000 does.
1/1000 delivers 2x more light than 1/2000 does.
1/500 delivers 2x more light than 1/1000 does.
1/250 delivers 2x more light than 1/500 does.