Cant get my head around sharpening
Cant get my head around sharpening
I resize my images for web flickr etc.. to 1024px but i just can't seem to get them to look great after sharpening i use USM as my final step, but just cant seem to get them to look as good as my full size equivalent. Any tip or recommended settings with regards to the best way to sharpen for images that have been resized?
Canon 7Dmk2
Canon 7D
Sigma 18-200
Sigma 10-20
Canon 100-400 L IS II
Icom ICR-2 Scanner
PSN: timuss
Canon 7D
Sigma 18-200
Sigma 10-20
Canon 100-400 L IS II
Icom ICR-2 Scanner
PSN: timuss
Re: Cant get my head around sharpening
Take a gander at this - particularly stage 3.....
https://www.cambridgeincolour.com/tutor ... pening.htm
Cheers,
Ralph
https://www.cambridgeincolour.com/tutor ... pening.htm
Cheers,
Ralph
www.ralphluntphotography.com
www.jetnoise.co.uk
There's only one way to skin a cat - with a very sharp knife.
www.jetnoise.co.uk
There's only one way to skin a cat - with a very sharp knife.
Re: Cant get my head around sharpening
Jetnoise wrote:Take a gander at this - particularly stage 3.....
https://www.cambridgeincolour.com/tutor ... pening.htm
Cheers,
Ralph
Very useful thank you for that
Canon 7Dmk2
Canon 7D
Sigma 18-200
Sigma 10-20
Canon 100-400 L IS II
Icom ICR-2 Scanner
PSN: timuss
Canon 7D
Sigma 18-200
Sigma 10-20
Canon 100-400 L IS II
Icom ICR-2 Scanner
PSN: timuss
- Dan O'Hagan
- Posts: 2279
- Joined: Wed 13 Apr 2016, 6:05 pm
Re: Cant get my head around sharpening
Sharpening doesn't have to be daunting - in fact it can be very simply executed indeed.
Personally I'd not sharpen an already resized image, I'd go back and start again from the original.
This is the technique I learnt from DanB...
1. Level and adjust the full size picture.
2. Resize to 2700 or 2800 pixels wide.
3. Run the Sharpen tool twice.
4. Resize to the size you want fo the final crop size (my standard is between 1800 and 2000 pixels wide)
5. Paste into 1600 pixels wide frame.
6. Adjust image within the frame.
And that should be it.
I sometimes add another Sharpen pass at this stage, which I then fade back to around 5-10% opacity to avoid any "jaggies" or over sharpening.
Example of this technique:
navy004 by DanOUKAR, on Flickr
Personally I'd not sharpen an already resized image, I'd go back and start again from the original.
This is the technique I learnt from DanB...
1. Level and adjust the full size picture.
2. Resize to 2700 or 2800 pixels wide.
3. Run the Sharpen tool twice.
4. Resize to the size you want fo the final crop size (my standard is between 1800 and 2000 pixels wide)
5. Paste into 1600 pixels wide frame.
6. Adjust image within the frame.
And that should be it.
I sometimes add another Sharpen pass at this stage, which I then fade back to around 5-10% opacity to avoid any "jaggies" or over sharpening.
Example of this technique:
navy004 by DanOUKAR, on Flickr
Re: Cant get my head around sharpening
I think these days 1024 wide edits are a bit old hat. 1600 wide is much more the norm and in some respects easier to sharpen.
I also thought conventional wisdom was only to sharpen after resizing down to whatever size you require (1024/1280/1600 etc) and also not to sharpen the full size original, and to turn in-camera sharpening off.
I also thought conventional wisdom was only to sharpen after resizing down to whatever size you require (1024/1280/1600 etc) and also not to sharpen the full size original, and to turn in-camera sharpening off.
Re: Cant get my head around sharpening
Thank you for your advice just a couple of things when you say sharpen twice which do you mean? Threshold levels etc... lower the better in USM?
Canon 7Dmk2
Canon 7D
Sigma 18-200
Sigma 10-20
Canon 100-400 L IS II
Icom ICR-2 Scanner
PSN: timuss
Canon 7D
Sigma 18-200
Sigma 10-20
Canon 100-400 L IS II
Icom ICR-2 Scanner
PSN: timuss
Re: Cant get my head around sharpening
Sharpening is a destructive process and should be performed a few times as possible.
If you shoot in RAW then don't sharpen on Export unless you intend to print straight out of the RAW converter, otherwise I would suggest using an alternative method such as High Pass Sharpening and if you are really worried use a Layer mask to selectively sharpen or not sharpen parts of your picture.
Sharpen at the very last stage of your workflow.
Don't beat yourself up about sharpening, unless you want to gain praise from the databases, in that case the screeners will do the beating for you!
If you shoot in RAW then don't sharpen on Export unless you intend to print straight out of the RAW converter, otherwise I would suggest using an alternative method such as High Pass Sharpening and if you are really worried use a Layer mask to selectively sharpen or not sharpen parts of your picture.
Sharpen at the very last stage of your workflow.
Don't beat yourself up about sharpening, unless you want to gain praise from the databases, in that case the screeners will do the beating for you!
Re: Cant get my head around sharpening
Lumix wrote:I also thought conventional wisdom was only to sharpen after resizing down to whatever size you require (1024/1280/1600 etc) and also not to sharpen the full size original, and to turn in-camera sharpening off.
Yes, but I think that's just because it's the easiest way to go about it...?
As I understand it, image-size reduction/resampling algorithms normally soften or blur images slightly, to prevent or reduce the introduction of digital artifacts like aliasing, moire etc... and sharpness is lost. (see HERE)
If we apply sharpening after reduction, then we don't care what was lost, it's our only sharpening stage.
But we can "oversharpen" before reduction instead, in anticipation of losing some sharpness in the process.
I think people typically do the sharpening as their final step, because - if they want each indiviudal image to have the "perfect" amount of sharpening - they can instantly see the effects of their adjustments, and what the final image will look like.
I guess that's easier than "oversharpening early"... then reducing... then finding the sharpness is not quite right... then having to repeat. (Although perhaps with practice/experience it becomes easy to judge the right amount of oversharpening for a given image?)
But on the other hand, some people (like ME!) don't like to spend a lot of time on post-processing, and just use the same amount of sharpening on every image :-D In which case, I don't think it matters that much, whether you do the sharpening before or after reduction, or a bit of both...?
Goodbye 600D... Hello FZ150!