Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
1 Like  #1
Playing with Unsharpmask sliders.
Lens: Vivitar 80-200mm Camera: K-50 Photo Location: Idaho ISO: 800 Shutter Speed: 1/125s Aperture: F11 
Posted By: Dewman, 10-27-2019, 02:42 PM

I'm one who is almost obsessed with sharpness.... especially if it's an image that really calls for it, but I much prefer REAL sharpness, sharpness that's a result of having a good lens and good camera.... not one that's created artificially with unsharpmask. When it's over done, it's not to my liking. I know all about what the old guy said a century and a half ago, about sharpness being a Bourgeois concept, but.... he's dead.... I'm not... and he never held a good Pentax camera and lens in his hands before!

I realize unsharpmask's usefulness and I use it quite frequently, but I don't know very much about HOW it does what it does. Normally, I never go past the 120 on Strength, 1.2 on Radius and I never touch the Threshold, mainly because I don't know what it does.

All that being said, last night I decided to dink around with an image and see what I could do that was REALLY out of my comfort zone. THIS is what I came up with. The droplets really stand out, but they seem to be un-naturally sharp. This has IIRC, 25 on the Strength, 25 on the Radius and a whole bunch on the Threshold.

What's YOUR opinion? I'll post the original later.

Last edited by Dewman; 01-28-2020 at 01:30 PM.
Views: 284
10-27-2019, 03:10 PM   #2
Loyal Site Supporter
Loyal Site Supporter

Join Date: Jan 2010
Location: Northern California
Photos: Gallery
Posts: 5,302
I think it created too much of an unnatural texture. I definitely want to see the original. I tend to push the sharpening slider up to 60-80 which doesn't look too unnatural to me. The further I go with sharpening I usually increase the de-noising, which kind of defeats the sharpening, but offsets the harshness. However, all that said, I am a complete amateur at it
10-27-2019, 03:17 PM   #3
Site Supporter
Site Supporter
Larrymc's Avatar

Join Date: Jun 2014
Location: Mississippi, USA
Posts: 3,484
I tend to agree with Todd, I very rarely even fool with the USM sliders in DXO PhotoLab 2.3. When you figure them out let me know, Dewey.
10-27-2019, 06:33 PM   #4
Veteran Member
Dewman's Avatar

Join Date: May 2012
Location: Idaho
Posts: 5,369
Original Poster
O.K., here's the original image without the hyper unsharpmask sliders. Nothing too awfully wrong for just a rather mundane pic of a leaf with water on it.... but I was just monkeying around with the USM, just seeing what it would/could do.

Last edited by Dewman; 01-28-2020 at 01:30 PM.
10-27-2019, 06:49 PM   #5
Senior Member

Join Date: Jul 2019
Posts: 272
Personally I'm a fan of what you first said - sharpness not artificially created, but sometimes an image calls for it. Some times you don't get a second shot.
10-28-2019, 02:10 AM   #6
Loyal Site Supporter
Loyal Site Supporter

Join Date: Jul 2012
Photos: Gallery | Albums
Posts: 12,035
After studying both images, I have to say that my money is on Numero Uno. The sharpness appears very natural to me as I have witnessed many leaves looking even sharper than what has been

edited. As far as the water droplets, water droplets are naturally sharp, clear and colorful. That is how we get so many beautiful reflections when angled properly. Also, I believe the exposure is

D.O.T, Direct On Target. "Who could ask for anything more?" Very nice work in my book.

Cheers, Tony

  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
camera, image, lens, photo, radius, sharpness, strength, threshold
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Track Sliders Rico Pentax Camera and Field Accessories 6 04-04-2018 03:17 PM
People Sliders bossa Pentax K-3 Photo Contest 25 06-04-2014 03:53 AM
Does Konova regularly update their sliders? iNicole Troubleshooting and Beginner Help 0 01-21-2013 10:07 PM
Abstract When sliders go wild ! daacon Post Your Photos! 8 09-19-2011 06:43 AM
Three Presence Sliders in Lightroom 2 mithrandir Digital Processing, Software, and Printing 5 02-24-2009 05:13 PM

All times are GMT -7. The time now is 04:25 PM. | See also:, part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]