[savoche]

From a previous post...

Try this in LR (should take less than 10 seconds)...

1. Open the DNG file in the DEVELOP module.
2. Open the DETAIL dialog box and go to the Noise Reduction set of sliders.
3. Press the "Alt" key on your PC to turn the image to B&W, then with your mouse pointer, push the Luminance slider to the place on the scale where the noise speckles start to fade, then adjust to suit your fancy (some like to leave a few speckles to keep the image from looking plastic...). Be patient as it may take a moment for the effect to become apparent.
4. Press the Alt key, again and adjust the COLOR slider to remove the color speckles. Again, be patient as it may take a moment or two for the color speckles to dissolve.
5. Go to the SHARPENING set of sliders (above the NR set in the DETAIL dialog box).
6. In your mind, subtract the Luminance adjustment number from 100 and enter that calculation into the AMOUNT slider's adjustment result box. For example, if your Luminance number was 30, enter 70. Notice that the luminance noise you erased earlier has returned. UGH ! Get rid of it by...
7. Press the Alt key on your PC, again, and adjust the MASKING slider to the point that your image appears to be a B&W line drawing.
8. Release the Alt key...

BINGO ! You have killed the image noise AND sharpened it, as needed to fit your taste. Now, let's get that pesky WB under control...

Read more at: https://www.pentaxforums.com/forums/172-pentax-k-3/283047-wow-i-didnt-think-h...#ixzz3UG4Hbj5y

Also, check this out...

How to fix shadows and highlights in Lightroom - Guest Serge Ramelli - YouTube

Good luck & cheers... M

Waking up a sleeping thread, but if you want to spend even less time on noise reduction and sharpening you can save the above settings as camera defaults. These defaults can be saved with separate values for each ISO value (and for individual cameras as well).

First, go to Lightroom Presets, Default Develop Settings, and tick the boxes for "Make defaults specific to camera serial number" and "Make defaults specific to camera ISO setting".

Then make the adjustments as described by Michael above.

Then, still in the Develop module, press the Alt key (Option for Mac) to change the "Reset" button at the bottom to "Set Default...". Now you can set all your current Develop settings as the default, and the next time you import an image from the same camera at the same ISO you will get your own settings applied automatically.

This way you can customise default noise reduction and sharpening (as well as other settings if you wish) for each ISO value. Some fine tuning might still be necessary, of course, but I find this to be a huge time saver.

(Hold down the Shift key to change the "Reset" button to "Reset (Adobe)" if you want to remove your custom default setting.)