The difference between the two crossfades

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The difference between the two crossfades

Postby BarbaraC » Thu Aug 07, 2008 9:47 am

This has been discussed efore, but no matter who said what and no matter how much I played around, I couldn't find any significant difference between the two crossfades. I gave up and sent off mail to Photodex. Here's the reply I just received:

There is a difference in motion between the two transitions. With Cross
Fade-Linear, the transition is going at a constant rate, or you can
think of the motion as happening at the same speed until completed. The
Cross Fade - Blend starts blending slowly, then goes quickly, then
slowly again.


Now the big question is whether the difference can actually be seen in our shows. Testing is required, but I must say that, without knowing why, I've always preferred the non-linear crossfade.

Barbara

(A copy of this is also in the Producer section.)
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Re: The difference between the two crossfades

Postby DickK » Thu Aug 07, 2008 3:04 pm

"Perception is reality" or so it is said.

Their description matches what I think I see for a difference between the two. It is subtle but I think there is a difference. For me, I normally use the default one but I'll switch to the other one sometimes... uhhh... just 'cause I can?? 'cause it felt better?? <shrug>

Actually I find I'm more and more using a fade-through-black to get a clear separation between the shots, especially when the pictures have major differences between them in zoom, color or style. In many cases I don't like the crossfades at all because of the blend that's visible during the transition.

Dick
"It is the mark of an educated mind to be able to entertain a thought without accepting it." Aristotle ((PSG, PSE & Fuji HS20 user)) Presentation Impact Blog

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Re: The difference between the two crossfades

Postby BarbaraC » Thu Aug 07, 2008 3:41 pm

I did find a very distinct difference recently when creating the effect of an out-of-focus camera going into focus. It required a fade with a really long duration, and the linear fade was by far the better choice because of the constant speed. I didn't realize at the time why it looked better, but now I do. That's how we perceive the focusing of a camera: at a constant speed.

I'm with you, though, on that strange mix of two photos that happens during a fade. And if both photos are in motion? God forbid!

Barbara
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