Old 06-15-2009, 12:37 PM   #1
wongm
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Default Always undersharpened - any hope?

This is a 100% crop of an 3456 by 2304 pixel original.



The edited image from original was rejected for being "Undersharpened (Soft)":

http://www.railpictures.net/viewreject.php?id=696937

Almost 8 of my previously uploaded images have been rejected for the same reason, but some have gotten through. Is it just my monitor being crap resulting my my post processing being not enough, and will throwing more sharpening at it fix the issue? Or is just not sharp enough to being with when I took it?

Personally I never paid much attention to perfect focus before now.
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Old 06-15-2009, 12:44 PM   #2
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Are you sharpening them before you upload them here?
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Old 06-15-2009, 04:58 PM   #3
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Quote:
Originally Posted by wongm View Post
Personally I never paid much attention to perfect focus before now.
May not be focus - try holding back on the vibrance/saturation on the number on the sole-bar; it looks to luminous, if that makes sense. It could be emphasised with the strong red and white against the black.

Of course, I may just be talking pants...
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Old 06-15-2009, 10:13 PM   #4
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Quote:
Originally Posted by wongm View Post
T
The edited image from original was rejected for being "Undersharpened (Soft)":Is it just my monitor being crap resulting my my post processing being not enough, and will throwing more sharpening at it fix the issue? Or is just not sharp enough to being with when I took it?
This shot definitely looks fixable. Apply some sharpening and resubmit.

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Of course, I may just be talking pants...
As opposed to talking skirts?
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Old 06-15-2009, 11:24 PM   #5
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Are you sharpening them before you upload them here?
Yes I am, an example is the link to the rejected shot, but the crop I posted has not, to illustrate whether it is 'good enough' to start with.
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Old 06-15-2009, 11:41 PM   #6
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Its never good enough to start. When resizing to upload extra sharpening needs to be added because the image looses sharpness when it is re-sized.
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Old 06-15-2009, 11:51 PM   #7
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Quote:
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Yes I am, an example is the link to the rejected shot, but the crop I posted has not, to illustrate whether it is 'good enough' to start with.
May we ask what you're sharping it with? Unsharp mask set the right way will fix all your troubles.
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Old 06-16-2009, 12:22 AM   #8
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Unsharp Mask is the greatest thing since sliced bread. Your shot is easily fixable.

1. Open Photo
2. Rotate to Level
3. Strong dose of Unsharp Mask
4. Saturation / Contrast / Etc.
5. Resize
6. Smaller dose of Unsharp Mask
7. Save / Upload
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Last edited by ottergoose; 06-16-2009 at 01:13 AM.
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Old 06-16-2009, 12:46 AM   #9
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Quote:
Originally Posted by milwman View Post
May we ask what you're sharping it with? Unsharp mask set the right way will fix all your troubles.
Only IrfanView, which is rather basic in editing, I should really read up on using GIMP or similar. Thanks for the advice though, will give it a try. Thanks to ottergoose as well, that is pretty much the workflow I was using already.
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Old 06-16-2009, 11:47 AM   #10
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I have spent my evening playing around with Gimp, does anyone have any recommendation for settings for the unsharp mask. At the moment I am just fiddling with the 3 sliders randomly, and hoping something good comes out at the end.

[EDIT]
My edited version was accepted:
http://www.railpictures.net/viewphoto.php?id=287608

As for the unsharp mask settings, I used a radius/amount/threshold of about 5/0.3/0 for the initial full size pass, and about 2/0.2/0 for the one after the resize.

Thanks again all.

Last edited by wongm; 06-16-2009 at 12:54 PM. Reason: Photo got in!
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Old 06-16-2009, 01:12 PM   #11
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Glad you got it it - well done

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Old 06-17-2009, 12:48 AM   #12
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Default An alternative to unsharp mask

I have been using the high pass filter method of sharpening almost exclusively lately with Photoshop. This method seems quicker and easier to work with for me.

Here is a link to a nice tutorial if interested.
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Old 07-04-2009, 11:31 AM   #13
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On to a new shot - first undersharpened:
http://www.railpictures.net/viewreje...d=703835&key=0

Now oversharpened, and a tad wonky:
http://www.railpictures.net/viewreje...d=704144&key=0


I am having trouble telling the difference, can somebody point out a particular part of the photo to look at?
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Old 07-06-2009, 12:33 PM   #14
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Here is another pair of rejections - undersharpened:
http://www.railpictures.net/viewreje...&key=994049873

Oversharpened:
http://www.railpictures.net/viewreje...d=704699&key=0

It is starting to drive me bonkers, not being able to find the difference.
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Old 07-06-2009, 02:06 PM   #15
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I don't know Marcus, the second ones don't look oversharpened to me but I am at work and I am not sure how good this screen is. I would have to look at them on my HD screen at home
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Old 07-06-2009, 02:08 PM   #16
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Marcus,

That second shot looks mighty fine to me. I don't see a problem with it at all.

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Old 07-07-2009, 01:07 PM   #17
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Thanks for the advice both. Luckily I still had a low compression version of the undersharpened images, so was able to add a smidge more sharpening before I submitted them again, and they got in.

Image © Marcus Wong
PhotoID: 289826
Photograph © Marcus Wong


Image © Marcus Wong
PhotoID: 289825
Photograph © Marcus Wong


I guess it show you that getting 99% there is easy, the last 1% is much harder.
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Old 07-07-2009, 11:15 PM   #18
Dennis A. Livesey
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Cool

In the Oversharpened rejects, look at the aliasing in the wires, along the edges of the cars and the railheads. Those jagged edges are what the screeners are seeing and saying no to.

BTW, congrats on your accepted photos!
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Old 07-09-2009, 11:57 AM   #19
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This shot was rejected for bad cropping:

http://www.railpictures.net/viewreje...d=705920&key=0



The bush just behind the locos is frustrating for me, this shot is much earlier on, but I don't like the signal gantry behind, or the tufty grass:




Any suggestions? I am inclined just to move on, it is just an okay lit 3/4 shot...
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Old 07-09-2009, 12:41 PM   #20
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Quote:
Originally Posted by wongm View Post
This shot was rejected for bad cropping:

http://www.railpictures.net/viewreje...d=705920&key=0



The bush just behind the locos is frustrating for me, this shot is much earlier on, but I don't like the signal gantry behind, or the tufty grass:




Any suggestions? I am inclined just to move on, it is just an okay lit 3/4 shot...
I would say the the bad cropping reject is more for the poor light and sky and the foreground clutter (grass and bushes). If the light and sky were great and there was no clutter, it would be accepted.

In the other shot, the gantry looks like it's growing out of the top of the locomotives, not good. And again, poor light and sky and obstruction.
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