X-Pro 1: No exposure compensation in Auto-ISO - is this a bug?

Started Feb 5, 2013 | Discussions thread
viking79 Forum Pro • Posts: 14,137
Re: X-Pro 1: No exposure compensation in Auto-ISO - is this a bug?

viking79 wrote:

This means all digital cameras need two new modes. ISO sensitivity priority and Shutter Speed Aperture Priority. The first isn't all that important, but the second one is critical to many styles of shooting. These modes were not possible on film since ISO was fixed by what film you loaded in the camera.

Look at the top of the Pentax K-5 Mode dial:

http://www.dpreview.com/reviews/pentaxk5/4 image from DpReview's review of K-5

And see the modes:

P: program, full auto but shifted to taste

Sv: Sensitivity value priority, select ISO; shutter, aperture change automatically.  This mode is entirely unnecessary since other modes allow selection of ISO, i.e. if a P mode allows manually setting ISO this mode is redundant.  Ideally, you would have this mode and a P mode where you could only use auto ISO.

Tv: Shutter speed value priority; varies aperture and ISO according to program mode of camera (modes for MTF, depth of field shallow, depth of field deep, or high shutter speed).

Av: Aperture value priority; varies shutter speed and ISO according to lens focal length and camera setting, slow, normal, fast, and according to program mode of camera.

TAv: Shutter Speed Aperture value priority; varies ISO accordingly, including EV compensation.

M: manual.  You select shutter speed, ISO, and aperture values.  Auto ISO in M is not a good thing.  It is an overload which makes you forget auto ISO on when you want real manual mode.

This is one page I wish other companies would take from Pentax's book.


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