Blurred Images in O&A

[denwell]

I find that using the new dynamic blur tool in O&A is a great way to fade in and out and provide a background to text and titles, but there's always a dark edge, predominently at the top and bottom of the blurred image. It's not a smooth blurring across the whole image. In order to achieve this it seems that I need to greatly enlarge the picture - not what I want to do.

So my question is - should I expect this to be the 'norm' or am I missing something? I'd hate to have to resort back to pre-preparing a blurred image in PShop.

[davegee]

Den,

What you see is the interaction between the blurred image and the background.

If you use a white BG you'll get a light edge instead of the dark edge. Maybe there is a gray which will be suitable??

Igor explained that they use a different blur to the blur that you are used to in your image editor.

I usually enlarge the image before adding the blur as per your suggestion.

DG

[jt49]

... am I missing something? ...

Yes, I think so. You may look at a scene with small images that are zooming, starting blurred, and ending up sharp. In cases of that kind the border of the blurred images must be blurred as well, and in addition partially transparent.

Regards,

jt

[denwell]

Thanks for the explanations Dave & JT.

I had assumed that it must be due to background 'spillage'. Not entirely satisfactory for on-the-fly use then.

I'll try the combination of a different coloured background with some transparency and see if I can reduce the edge effect, I don't really want to enlarge each image sufficient to avoid the effect appearing within the slide area but if this is the work-around then so be it.

Pity.

[davegee]

Please take a look at the examples:

Black BG

Mid Grey BG

White BG

The Possible (???) Answer:

The Rectangle is Mid-Grey

DG

[denwell]

Thanks again Dave.

I think a mid-grey BG might be a solution, but it's hardly dynamic (as promoted)!

Is the blur effect mainly intended for 'pic-in-pic' use - it's certainly not very effective with full screen images?

I'll try some experimentation with mid-grey as a background, otherwise its back to my image editor.

[davegee]

Hi Den,

"Dynamic" in this context means that you can vary the amount of blur between two Key Frames.

You can also vary the Colour dynamically between Key Frames.

Try combining Blur and Colour "Dynamically" - you never know - you might start a new trend / genre?

DG