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I just can't figure out a way to lock the movement of the shape with the live filter layer. Since the center of the distortion seems to be locked to the screen size, and the center is moved only when you are in the editing mode of that live filter.
I just duplicated the layer. Changed the size. Added a distortion effect. Drew an oval, and dragged it over the mask layer of the copied layer.
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You can move the center of the live filter, but only when you have the edit pop-up available. The live filter starts at the center, but you can drag it anywhere on the screen. You just can't move it unless you then double click on the live filter to bring up its pop-up.
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If you select just the mask you can move the part of the image showing through. So it looks like you are using a magnifying lens moving it across the picture. Add any distortion effects you want. Just remember most default to distort around the center, and you will need to drag the center of the distortion with a mouse for most that I have come across.
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You can move the center of the live filter, but only when you have the edit pop-up available. The live filter starts at the center, but you can drag it anywhere on the screen. You just can't move it unless you then double click on the live filter to bring up its pop-up.
Interesting approach, yes it works, even with the spherical effect. The key drawback of your approach is that the effect is not limited to the shapes border. In your case, the shape must be bigger than the effect, then it looks perfect as in your video. But, when the effect is bigger than the shape, it becomes visible. Look at the attached screenshot. Especially for a magnifier, it is important to limit the magnification effect to the border of the physical magnifier geometry.
I have summarized the finding in a short video tutorial. It shows a way how to make a shape, to assign a distortion filter, how to adjust the effect within the shape and how to make the effect movable around the picture. It also shows the limitations. What I would wish is
i expected to see a center moving control inside the edit popup and did not notice that when the mouse hovers the sphere, the cursor's shape changes to a node-edit-like triangle and the sphere can be simply dragged around... which is much better than setting the center coordinates by numbers!
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- you assign a live distortion effect to this ellipse, e.g. a wave, sphere, lense distortion etc. (the magnifier effect)
obviously i suspected that there was something wrong in my photograph, so i tried to apply the live sphere filter to different images and i found the same behavior with several jpegs and pngs. with some other images, however, it worked correctly.
3) the image after applying the spherical live filter and cropping it (the crop included the whole width of the image and about two thirds of it starting from the top - notably, it did not entirely include the semi-sphere of the effect)
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5) i reloaded the original image, then i cropped a slice at bottom and reapplied the filter: this time, it worked correctly.
anyway, the spherical filter seems to have problems the team should look at. in the test i did to experiment with the question asked by BlauerClaus, i found that on certain images it works as expected, in other it only acts on the lower half; in addition there's some strange interaction with the crop tool: if i crop the image after applying the filter, the upper half or the image disappears.
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Maybe the team of Serif can give us a hint. The need of having motion in a photo editor is the real time tuning of the effects. We use that commonly for all standard exposure and shadow effects. You need to see them in real time to make adjustments. Especial the magnification of text requires motion to see which part of the text is magnified.
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4) what i got exporting the cropped image and reloading it: it looks like the effect was applied correctly also to the upper half, but the crop screwed up the image. by the way, this is exactly the same result i obtained exporting the image before trying to crop it.
You could design a magnifier glass on top of the leave picture, and while moving this glass around, you see the magnification effect constantly.
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That is so very true. As I said it is just an illusion. It was just fun to consider the possibilities. I mean you could really debate why would you need motion in a photo editor at all, when you will only be able to display the finished static product any way. But it was fun to consider. Thanks.
@crabtrem: This looks nice, thank you, but unfortunately, this magnifier is static. You cannot move the oval around and the underlying layers follow (as a real magnifier would do). In your picture, when you move the oval, the ladies face will be moved around. This is because you determined the position of the distortion effect in the beginning. I difference to your approach, I would like to apply the distortion filter to the oval, and then this oval becomes a "live magnifier" that you can move around.
The Spherical Filter does it, thank you crabtrem I can move it around. But how can I assign the distortion effect to any shape? A triangle, a rectangle, a star, any self defined shape? This is why I hoped to start with a geometric shape, and then to associate the distortion effect to this shape.
so when I select the mask (triangle) I can move that over the image. I looks like there is a distortion from the spherical filter, although not a pronounced because of the shape. I'm guessing.