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Riccardo Polini

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Joined on May 6, 2008
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Total: 4, showing: 1 – 4
On article DxOMark confirms Canon EOS 1D X II sensor advances (217 comments in total)
In reply to:

ozturert: Have they underexposed by 5EV and then balanced the exposure? That is the new fashion in internet, you know...

For positive films (slides), blown/burned highlights imply there is no more Ag on the emulsion. No silver, no information that can be recovered in the printing phase.
The contrary happens with negative films. Heavily underexposed areas mean no silver remaining on the film (AgBr is not hit by photons, it can't be reduced to metallic Ag, and silver halides are completely dissolved by fixation with the solution of thiosulfate salt). Consequently, information (i.e., metallic silver) is absent and not recoverable in the printing process.
For these reasons, it was preferable to not overexpose with positive films, while it was possible to overexpose safely with negative films.

Link | Posted on Jun 30, 2016 at 17:15 UTC
On article DxOMark confirms Canon EOS 1D X II sensor advances (217 comments in total)
In reply to:

ozturert: Have they underexposed by 5EV and then balanced the exposure? That is the new fashion in internet, you know...

LOL !

Link | Posted on Jun 30, 2016 at 12:13 UTC
On article Samyang to show 24mm F3.5 tilt-and-shift lens at Photokina (144 comments in total)

What about distortion?

Link | Posted on Sep 7, 2012 at 15:37 UTC as 43rd comment
On photo Elisa in the F2.8 or F2.0 Zooms, Stabilized by Lens or Camera body, Low Light, No Flash challenge (2 comments in total)

The 105 VR is a zoom: it changes its FL at close distances ...
:-))

Link | Posted on Sep 2, 2011 at 20:41 UTC as 1st comment
Total: 4, showing: 1 – 4
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