About OSS degrading image quality

Started Apr 29, 2013 | Questions thread
EinsteinsGhost Forum Pro • Posts: 11,977
Re: About OSS degrading image quality

wblink wrote:

Somewhere along the line someone told about the rules whe used BEFORE IS: if 1/focal length > than shutterspeed use IS.

I would like that as een (optional?) algorithm in the Sony camarea's, with possibities to overrule that.

Hmmm, sound the same as asking Sony get the moon a little nearer, so I can make better pictures.

Sony's algorithm uses the recommendation (actually, 1/equivalent focal length). Here is an example:

NEX-3, 135mm, f/4.5, 1/250s, ISO 1250

The above image was taken with Auto ISO and Aperture Priority. The recommended (minimum) shutter speed computes to 1/205s (considering the crop factor), and the algorithm rounds it up to third stop (1/250s). Any darker and the next higher ISO third stop would be used. This was a handheld shot.

While the case above is a non-stabilized situation, even with OSS, the same applies. To override, you'd have to take matters manually (manual ISO, for example).

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