canon inc digital lens optimizer explained

Improved photos with Digital Lens Optimizer (DLO)

I’ve written about Digital Lens Optimizer earlier this year on this site, and then also was commissioned to write about it for Canon Professional Network (CPN). Just a day or so ago Canon’s EOS division in Japan added new information with a lot of detail about what DLO does, how it does it, and also provided some examples of when it is helpful to use.

You might find the English doesn’t read perfectly, but the depth they explain is quite something. Even if you shoot wide open with your lenses then you will find that DLO can help your images have more critical sharpness at the plane of focus. Most photographers who have looked at DLO have considered it’s ability to improve image quality when lenses are stopped down and causing diffraction, but it’s other benefits are indeed helpful for a wider range of photography situations and styles.

I particularly have found that pinpoint highlights in the middle of a model’s eye are prone to purple fringes (axial chromatic aberration) with some lenses if the eye is centred in the frame. DLO certainly improves this. I just wish that the DLO feature didn’t have to completely decode the RAW images every time like the other added features of  the DPP software. It should be possible to batch apply DLO to images for example, not have to deal with each image individually. If Canon could improve the speed of working with the different functions of DPP such as DLO, noise reduction, cropping, composites etc it would be a fundamental step forward. Also it would be great ot be able to edit and enter IPTC info and have it displayed in PhotoMechanic, Lightroom, Photoshop and even Canon’s Project1709.

Update January 2020: Link to Canon site with DLO information no longer works and has been removed.