Cboyes From Australia, joined Sep 2004, 128 posts, RR: 0 Reply 4, posted (8 years 2 weeks 3 days 23 hours ago) and read 899 times:
The leading edge of the wing and horiz. stab. are jagged, and also possibly part of the top of the fuselage. You could try selective sharpening. I don't know what editing s/w you're using, but in Photoshop Element 3 I would do something like this:
- after you've done all your other editing, and resized the image to a.net size (because sharpening is the last thing you do), make a duplicate copy of the background layer
- view the image at actual pixels size
- apply the USM sharpening to this layer (don't ask me how much, but probably a bit less than what you already used)
- select the eraser tool and set it to an appropriate size, and adjust the opacity to something like 50% maybe (experiment with this)
- erase the leading edge of the wing and h. stab and any other parts of the image that appear jagged
- flatten the image.
Apply these changes to the version of the image prior to the one you uploaded i.e. don't edit a file thats already been saved as a jpeg.
Cboyes From Australia, joined Sep 2004, 128 posts, RR: 0 Reply 5, posted (8 years 2 weeks 3 days 21 hours ago) and read 876 times:
There is a variation on the above technique. Create two duplicate layers, both copies of the background layer. Working on the middle layer (turn the other two layers off) apply a moderate amount of USM - just enough to sharpen up the wing leading edge without introducing jaggies. You might be using settings of 100%/0.3/1 for example.
Now, working on the top layer (once again, turn off the other two layers) apply the max. amount of sharpening you can get away with without worrying about the jaggies this produces on the wings leading edge. This might be 300%/0.3/1.
Now, using the eraser tool - still working on the top layer - erase the wing leading edges and any other areas that are over sharpened. This time you can leave the opacity of the eraser tool at 100%.
When you display the middle layer you will see the more lightly sharpened areas will show through where you used the eraser tool. Finallly, flatten the layers.
Psych From United Kingdom, joined Nov 2004, 2968 posts, RR: 60 Reply 6, posted (8 years 2 weeks 3 days 20 hours ago) and read 857 times:
Charles,
Craig has given an excellent summary of how to deal with the problem. I would go with this idea of using layers to erase excess jaggies.
My only other comment might be to begin with a setting of, say, 500%, 0.2 and 0, which will often produce a nice sharpening effect without creating excess sharpening. Depending on the result of a USM pass such as this, you may choose to do another pass at a lower setting - say, for example, 150%, 0.2 and 0, to see the impact (you can always remove it in one go by using the History palette to go back a step in your editing), or you could stick with the first pass and apply some selective sharpening using the Sharpening Tool.
This was advice I was given and it has enabled me to be rather more selective about what I would like to see sharper, rather than sharpening the whole image/selection and then erasing some areas of oversharpening. Generally my sharpening process will include applying USM to various degrees, depending on the individual image, using the eraser on layers to deal with jaggies, and also the sharpening tool at times to get what I consider to be the best result. Other important aspects of these edits are the percentage strength of the Sharpening Tool and the degree of opacity of the Eraser. I do think this is a crucial aspect of editing that has a big impact on the overall final result.
If I can be of any further help don't hesitate to contact me.
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