Considerations for setting EV step in DSLR


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vinvin

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Dec 29, 2004
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#1
Hi,
I own the D70s DSLR. Lately, I've gone back to read my camera's manual in a bid to understand it's functions better for shooting in manual.

I came across the section where is it shows the camera having the function in the menu to set the EV step to 1/2 or 1/3.

Since this affects the electronic exposure display when we adjust either the shutter speed or aperture, what is the difference between these 2 settings? Does setting to 1/3(or 1/2) mean that with each stop of increment/reduction of shutter speed or aperture, I'm increasing/reducing light/speed by 1/3(or 1/2)?

The default EV step would be 1/3?

Thanks.
 

zac08

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Feb 21, 2005
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#2
Hi,
I own the D70s DSLR. Lately, I've gone back to read my camera's manual in a bid to understand it's functions better for shooting in manual.

I came across the section where is it shows the camera having the function in the menu to set the EV step to 1/2 or 1/3.

Since this affects the electronic exposure display when we adjust either the shutter speed or aperture, what is the difference between these 2 settings? Does setting to 1/3(or 1/2) mean that with each stop of increment/reduction of shutter speed or aperture, I'm increasing/reducing light/speed by 1/3(or 1/2)?

The default EV step would be 1/3?

Thanks.
Personally, I prefer 1/3 steps as it gives more room to control for minor adjustments. But if you're the sort who goes by full stop corrections, the 1/2 step may be faster.
 

vinvin

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Dec 29, 2004
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#3
Personally, I prefer 1/3 steps as it gives more room to control for minor adjustments. But if you're the sort who goes by full stop corrections, the 1/2 step may be faster.
Ok thanks. I noticed that if I set to 1/2 step, the F-stops go (for example) from F8 -> F9.5 -> F11 -> F13 -> F16. For setting at 1/3 step, the F-stops go from F8 -> F9 -> F10 -> F11 -> F13 -> F14 -> F16 on my camera. Is the 1/2 step here similar to the '1/2' stop from F8 to F16?

A bit blur about this.
 

catchlights

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Sep 27, 2004
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#4
Ok thanks. I noticed that if I set to 1/2 step, the F-stops go (for example) from F8 -> F9.5 -> F11 -> F13 -> F16. For setting at 1/3 step, the F-stops go from F8 -> F9 -> F10 -> F11 -> F13 -> F14 -> F16 on my camera. Is the 1/2 step here similar to the '1/2' stop from F8 to F16?

A bit blur about this.
half step is 1/2 stop
one third step is 1/3 stop
 

night86mare

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Aug 25, 2006
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#5
it's personal preference

i like 1/2 stops, because they give cooler numbers that are usually more commonly seen in exif data. :)

simply put, if you put in 1/3 stops, then you would take 3 adjustments to get from f/8 to f/11. if you put in 1/2 stops, then you just need 2 adjustments.
 

Jul 31, 2006
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#6
Ok thanks. I noticed that if I set to 1/2 step, the F-stops go (for example) from F8 -> F9.5 -> F11 -> F13 -> F16. For setting at 1/3 step, the F-stops go from F8 -> F9 -> F10 -> F11 -> F13 -> F14 -> F16 on my camera. Is the 1/2 step here similar to the '1/2' stop from F8 to F16?

A bit blur about this.
For example, from F8 to F11 is one full stop. If you set your increment to 1/2 stop, it take you 2 steps to jump from F8 to F11 (hence F8->F9.5->F11). If you set your increment to 1/3 stop, it take you 3 steps to jump from F8 to F11 (hence F8->F9->F10->F11)

I myself prefer 1/2 stops or even 1 full stop increment, so it take me less time to adjust the setting. In film era, there are usually only full stop adjustment, 1/2 stop can be done by move the barrel slightly between two stops.
 

catchlights

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#7
when you come from the day of film photography, shooting with 35mm manual camera, you notice there is no such thing as 1/3 stop.

on 35mm slide, the exposure results 1/3 stop different are not very much compare to 1/2 stop.

1/3 stop exposure difference is only visible when you shooting larger format camera with slide film.

nowadays, on digital, we can tell clearly the exposure difference of a 1/3 stop.

so to have one third step or half step, is your personal preference.
 

vinvin

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Dec 29, 2004
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#8
Got it! Thanks everyone for explaining and setting my understanding right. :thumbsup:
 

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