For a Nikon DSLR what is the difference between adjusting EV and ISO? How does either effect the exposure?
For a Nikon DSLR what is the difference between adjusting EV and ISO? How does either effect the exposure? - 1
Do you mean 'exposure compensation', as opposed to EV?
ISO adjusts the sensitivity of the sensor (well, actually the gain of the amplifiers). If you're shooting in one of the auto modes, changing the ISO will not affect the exposure unless you run in to the limits of your system (aperture, shutter speed). ISO will affect the noise in the image, becoming noticeable when ISO is above 1600 in modern DSLRs.
If you're shooting in manual mode and only change the ISO, larger numbers will make your image brighter, smaller number will make your images darker.
Exposure compensation (EC) adds an offset to shutter speed, aperture, ISO (if using autoISO mode), and/or flash power; all depending on what mode you are shooting in and if you're using a flash. The important word is OFFSET. This fools the exposure metering system. Thus, if you apply a positive EC, your image will get brighter. If you apply a negative EC, your image will get darker. This is all explained in your manual with examples showing different EC settings (the units are in Exposure Value, or, EV).
What is not explained in the literature, if you are shooting in manual mode with autoISO turned off, EC will apply an exposure offset to the speedlight unit (flash).
So between Easy Exposure Compensation (B3) and ISO adjustment (D3), under what circumstances should I use either?
- If I set up a Nikon d5 and a d7100 next to each other both on the same Iso, and exposure and so on. Would the d5 be more exposure?
- Adjusting iso with shutter speed?
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