Category Archives: Equipment

Perspective Correction: Lens vs. Software

Posted on April 27, 2013 by adomagala

I’ve been coming across a lot of discussion of tilt-shift lenses recently. One of the particular benefits of these lenses is the ability to apply perspective correction to a scene by shifting the lens up or down. This allows the … Continue reading →

Posted in Equipment, Techniques | Leave a comment

Tamron 24-70 2.8 VC tested vs Sigma 24-70 2.8 HSM

Posted on May 2, 2012 by adomagala

So I was pretty excited about the new Tamron 24-70 lens with vibration compensation. I couldn’t wait to put it up against my Sigma 24-70 HSM and see just how much of an improvement it was. Unfortunately, things did not … Continue reading →

Posted in Equipment | 2 Comments

Dynamic range, Canon DSLRs, and Shadow Noise – Dealing With It

Posted on April 22, 2012 by adomagala

Thanks in no small part to the release of the Nikon D800 and its excellent Exmor sensor from Sony, shadow noise has once again become a hot topic on Canon forums. To provide a brief summary of the fracas: the … Continue reading →

Posted in Equipment, Techniques | Comments Off

Sigma 12-24mm II – Discussion on Distortion Correction

Posted on August 20, 2011 by adomagala

Here are a few additional examples illustrating the distortions in the new Sigma 12-24mm lens, and the distortion corrections applied with PTLens. First, the question has come up of how much of the image is lost around the edges as … Continue reading →

Posted in Equipment | Tagged , , , , | Comments Off

Sigma 12-24mm II Lens Review

Posted on August 19, 2011 by adomagala

The Setup When I saw that Sigma was going to be releasing an updated version of their 12-24mm lens, I was quite excited. As a long-time owner of the original version, I had found many creative uses for it, both … Continue reading →

Posted in Equipment | Tagged , , , , , | 1 Comment