Jonathan Fleming's Blog

A Photography Blog

PTLens: Painless Lens Correction

with 4 comments

Corrected

Nikon D300s + Tokina 11-16mm f/2.8 at 11mm f/18 ISO200, 6.0 Seconds, Corrected in PTLens

Uncorrected

Nikon D300s + Tokina 11-16mm f/2.8 at 11mm f/18 ISO200, 6.0 Seconds, Original without Correction

I’m not really a stickler when it comes to distortion in my images, but a flickr buddy of mine recommended PTLens to me a couple weeks go, and after giving it a try tonight, I decided to purchase it. For a mere $25, you get a program that will correct lens pincushion/barrel distortion, vignetting, chromatic aberration, and perspective. You can technically achieve the same results in Photoshop, but what makes PTLens so special is how incredibly easy it is to correct an image. The first image above (top) is the corrected file from PTLens, and the second image is the original file. Notice the pretty apparent barrel distortion in the second image (vertical lines aren’t vertical), along with the perspective issues (the tops of the buildings seem to be leaning away from the camera), and how well these problems were fixed in the image above.

PTLens

PTLens in action

Here’s what the software looks like in action. PTLens has profiles set up for dozens of cameras and lenses (even for my Panasonic LX3!). It automatically pulls the camera and lens information from the image EXIF data, and based upon the lens’ unique distortion characteristics, applies the right amount of correction to barrel or pincushion distortion. I then manually dialed in a little vertical perspective correction, and that’s it! In seconds, I had corrected the image to my liking. I’m really excited about this new software, and plan to use it a whole lot for my photos, especially the ones that include architecture.

4 Responses

Subscribe to comments with RSS.

  1. How do you learn to see the distortion. I am a real n00b. The corrected image is more pleasing to my eyes, BUT i dont know why or how to spot that in an image any resources?

    nice find BTW

    rashard

    November 16, 2009 at 2:19 am

    • Hey Rashard!

      Take real close look at all the lines that are supposed to be vertical in the uncorrected image, especially towards the edges of the photo. You see how these lines are leaning inward toward the center of the frame instead of appearing straight as they do in the corrected image?

      Also, since I took this shot from a low angle looking up at the pyramid in the center of the frame, the pyramid appears to sort of lean away from the camera in the uncorrected image. Do you see it? 😉

      Jonathan

      November 16, 2009 at 5:20 pm

  2. Hey Jonathan,

    Nice tip! I’ll look into this. Sometimes I struggle with this problems. Thanks for sharing

    Miguel Kieling

    November 16, 2009 at 11:39 am

    • No problem Miguel! It’s a great tool!

      Jonathan

      November 16, 2009 at 5:20 pm


Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: