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Shuttershock and Olympus 75-300

Since a couple of months I own the Olympus 75-300 III. And since day one, I wasn't happy with the results I got. 
All the pictures shot at +/- 300 mm where soft and looked like there was motion blur. How's that possible? I tried it at a 1/1000th of a second, but still the motion blur in my pictures. I regret that I ever sold my Pentax with the 55-300 for this awfull lens!
But... Most reviews of this lens are positive. Is my copy of this lens bad?
I then figured out by reading forums that it could be a phenomena called 'shuttershock'. It that case, the shock of the shutter causes enough movement so the image is blurred.
For example:

How to fix this?
My camera has several drive modes, including one called 'anti-shock'. And that does magic.
In that mode The pictures are sharp again. No motion blur is visible! 
The downside of this mode is that the fasted drivemode can't be used.

Review DXO Optics Pro 7

On november 30th, DXO Labs released DXO Optics Pro 7. This new version is the successor of version 6.

This review will only review the main differences between the two versions.

First of a list of the changes:

  • Image management features and simplified workflow
  • Faster processing speed, particularly for Raw images
  • Improved lens softness correction
  • Improved saturated color protection

The first difference you will see when starting the program is the difference in the interface. There are three tabs now instead of four:

Organize, Customize en Process. The 'View' tab has gone. 

This shows the biggest difference in the program: workflow. In version 6 you'd to select the pictures you wanted to edit, edit, process (and view). In version 7 in the Organize tab you can organize the pictures like in Windows Explorer. You can now delete pictures from disk in DXO Optics Pro. Selecting pictures has to be done in the filmstrip on the bottom of the window.

After selecting a picture you will direct see what the effect will be of the presets you choose in the dropdown menu. When you want to tweak the settings, you can go to the customize tab.

The difference with version 6 is you don't need to select the pictures you want to edit and add them to a project. Selecting a folder in the Organize tab is all you need to do. It's still possible to select pictures and add them to a project as before. On the site of DXO it's the easiest to learn how to use these functions. The biggest advantage is you can manage the pictures in DXO, and the changes will also happen on you hard-drive. This is great when you want to use DXO in combination with other programs.

This change is possible because of the other big change: speed! This version of DXO is much faster than version 6. Version 7 has added GPU support that makes it possible to use all the resource your system has on board. In version 6 it sometimes took a minute to process one single file. Now a file has been processed in approximately 10 seconds. I tested it with 16 pictures, and it took 120 seconds to process them. That's a big difference to the 10 minutes I needed in DXO Optics Pro 6. Also when running a batch of pictures and meanwhile editing another is no problem at all.

Rendering a picture to see the changes you made, selecting a preset or adjusting a slider, only takes a glimpse. This update of DXO has made the biggest complaints about it outdated. The speed is now on par with the other programs, the ease of use is best I've ever seen.

The disappointment is about the image quality. No, it's not bad, it's very good. But there's no big change compared to version 6. I would like the rendering of small details would have been improved. Like I showed in this post before, the rendering of small details is better in Lightroom. But after all, the image quality in DXO is still very impressive.

The other changes which are also great, but not that big can bee seen on the site of DXO. The first is the improved lens softness correction which takes in account the difference in sharpness between the edge and the center of the image. The other change is recovery of details in high saturated areas. This allows you to get the details back in highly saturated areas, but not affected the other areas.


  • speed
  • ease of use
  • image quality
  • delete images from disk
  • workflow options
  • Integration with Filmpack
  • no grid view of the images in a folder/project
  • the noise reduction is to much in standard settings
  • support for Pentax lenses and thirth party lenses for Pentax is not on par with Lightroom
  • not possible to see some of the edits when viewing the whole image.

After all, this is the Update that made me really happy with DXO Optics Pro. 

Are you not convinced about DXO Optics Pro 7? Test is yourselves

Some screenshots:


spot removal

full screen

project page
no saturated color protection

with saturated color protection

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