Olympus UK E-System User Group
Olympus UK E-System User Group

Join our unique resource for Olympus Four Thirds E-System DSLR and Pen and OM-D Micro Four Thirds photographers. Show your images via our free e-group photo gallery. Please read the e-group.uk.net forum terms and conditions before posting for the first time. Above all, welcome!

Go Back   Olympus UK E-System User Group > Cameras, lenses and system accessories > Software

Software Discuss Olympus Master, Studio and Viewer software applications as well as third party programs like Adobe Photoshop, Lightroom, Apple Aperture, and others.

Thread Tools Display Modes
Old 30th October 2009
jdal's Avatar
jdal jdal is offline
Full member
Join Date: Dec 2007
Location: Northumberland
Posts: 4,039
Thanks: 129
Thanked 503 Times in 439 Posts
Likes: 199
Liked 664 Times in 282 Posts
Sharpening/Jpegging nightmare

PPing this pic's driving me nuts (this version is resized only)

I've decided to make my pics a max of 900 to stop the Gallery software resizing, so I never expected filesize issues. I try and keep files at < 230k, but this thing came out at 400 when I jpegged a sharpened version it via Photoshop SaveForWeb with enough quality to suppress the JPEG artifacts. I assume this was because the sand is as bad as it gets for the JPEG algorithms to compress, and sharpening exacerbates the situation.

For reference this is a 100% crop of a part of the image:

This is it with quality at 50%, results in a 250k file when fully sharpened.

and this at 80%:

You can see how the Jpegging has affected the fishing line.

The only way I seem to be able to get the line clear at about 230k filesize is to select the fishing line and only sharpen that. This is easier said than done with single strands floating about. The image probably looks better without the sand sharpened as it's distracting, so the best I've come up with is just the main body of the line sharpened. Including the single strands of fishing line and sharpening doesn't really work, the edges of the line look strange.

Can anyone share any techniques they use in these kinds of situations? This is an extreme case of a problem I seem to have in getting clean web images.

I'm using the WPPro plugin to resize and the FocusMagic plugin to sharpen

RAW original here

m4/3: E-P2, EM-5, 100-300, 14-42mm 12-50mm, 45mm, panny 14mm. 4/3: 7-14 + Flashes & tripods & stuff

"Take nothing but pictures and leave nothing but footprints".

Flickr gallery
Reply With Quote
Old 30th October 2009
snaarman's Avatar
snaarman snaarman is offline
Full member
Join Date: Feb 2008
Location: Baaarkshire UK
Posts: 6,824
Thanks: 493
Thanked 416 Times in 324 Posts
Likes: 489
Liked 1,285 Times in 496 Posts
Re: Sharpening/Jpegging nightmare

I think you have got yourself a tricky one there.

I usually resize to 800x600 then apply one of my subtle custom sharpening filter masks to recover the bite in the small picture. Generally I can get a 200Kb file that doesn't have jpeg errors and doesn't look over sharpened this way.

This example here - with all that sand - would be a testing example. Its almost inevitable that the file size will balloon with all that sandy detail. I am not so certain that having the sand soft would benefit the picture, so it may be you have to accept a large file in these circumstances..

Having recently (and expensively) upgraded to CS3, I am immediately tempted by the Smart Sharpen option. You can set that to avoid sharpening the shadows (and thereby creating unwanted noise) while still sharpening the rest of the image. However that trick won't work on this picture.

So there we are: Some pictures are just born to be huge :-)

Look, I'm an old man. I shouldn't be expected to put up with this.

Pete's photoblog Misleading the public since 2010.
Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
sharpening sapper Software 6 23rd September 2009 01:06 PM
Sharpening in Photoshop Barrie Norman Software 2 11th April 2009 11:44 AM
Nightmare Makonde Foto Fair 4 25th September 2008 12:02 PM
Nightmare! Zuiko The lounge 2 14th June 2008 09:44 PM
Hints on sharpening bobg Looking for improvement 15 25th February 2008 05:08 PM

All times are GMT. The time now is 06:04 AM.

The Write Technology Ltd, 2007-2019, All rights reservedAd Management plugin by RedTyger