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by Jakub

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10

You can correct lens distortion in post, but you do so at the expense of some of that higher resolution. Roger Cicala of LensRentals.com says in a blog post where he tests the uncorrected and post corrected resolution of an EF 24-105mm f/4 L lens at 24mm: But when someone wants to argue that they buy a lens with high distortion because it has higher ...


7

from http://wiki.panotools.org/Lens_correction_model The actual lens correction parameters a, b and c which are used to correct for barrel distortion, pincushion distortion and even wavy distortion. The a and c parameters control more complex forms of distortion. In most cases it will be enough to optimize for the b parameter only, which is good at ...


5

There are several problems transforming the curvilinear perspective of the wide angle GoPro lens to a rectilinear one. The transformation stretches the image in certain areas and compresses it in others. This lowers the image quality as new pixels are created as approximations and interpolations from the information in the original image. There is also a ...


5

I think this is an "apples and oranges" comparison - of you use the same lens on a full frame and a crop camera, you get different fields of view, so it's not really meaningful to compare which has more distortion. That said, the literal answer to your question is using the lens on a full frame camera, as you're then using the full extent of the lens's ...


5

Lens distortion can be corrected for automatically by programs like Lightroom, Photoshop or PTLens for the bold, if a profile for that lens exists (and if not, you can pretty easily make one yourself). Sharpness cannot be recovered in post, so this seems like a no-brainer. Take the sharp but distorted lens and let your software auto-correct it, with no ...


3

Barrel distortion is a form of distortion (not to be confused with other aberrations). It is often found with shorter focal lengths such as the lens in a phone - especially those trying to get the wide rather than narrow angle field of view. This distortion is also often seen with a single element lens, such as those associated with magnifying glass. If ...


3

The full frame camera will generally give more distortion than a crop body camera with the same wide angle lens because the wider angle of view obtained with a FF camera includes the edges that are cropped when using the same lens with an APS-C camera. Cropping the FF camera's image to get the same Field of View (FoV) as the APS-C camera will yield the same ...


3

I doubt there's a hardware solution to this, and if there were one, it's likely to cause a decrease in image quality. Software is your solution, here. From the DJI website for the Phantom 2 Vision minidrone: A lens profile released by Adobe for DJI Phantom 2 Vision's camera can be used to remove lens distortion DJI keeps it here: ...


2

The package RawTherapee, since version 4.0.9, will use Adobe .lcp profiles. Please see: http://rawtherapee.com/blog/rawtherapee-4.0.9-released Support for Adobe LCP lens correction profiles It is available in the Ubuntu repositories.


2

Unfortunately, Aperture doesn't have built in automatic lens distortion- you need to buy the plugin PTLens, ~$25.


2

Try using Darktable instead. The 'lens correction' module shown above should help remove the fisheye effect. If your lens is in the database it can automatically make the correction, or if not you may adjust manually.


1

There are transformations that you can apply to achieve some of what you're after, but there's not enough information in the source photo to come up with the final photo. For example, look at the heads of the two bolts. In the final photo, you can see that they're hexagonal, with round washers. But in the source photo you're looking at them from the side, so ...


1

Many image editing programs (Photoshop, Gimp, etc.) have a perspective correction feature that can do this for individual images. That said, don't expect miracles: a very large change, like in your stop sign examples, may be possible, but you'll probably lose significant quality. Not sure about doing it in real time for video; you may want to ask on the ...


1

You should create your own custom profiles for the inverted lenses.


1

I work in real estate photography, It really does not matter about the resolution, since the images are going to end up on a website with 1024px on it's longest side, distortion however does show up even after you correct the lens, I have two Sigma's 12-24mm and used them a lot in the past, now I am shooting with the Canon 17-40mm to force myself shooting ...


1

Simply put, the distortion isn't so much a result of the lens as it is the angle of view. Since you are seeing things that are almost directly out to the side, you are seeing them from the side rather than the front. You can apply a rectilinear correction, but doing so will result in forcing the perspective to not match up with what you are actually seeing ...


1

I found the following instructions which helped me achieve what I was looking for: http://m43photo.blogspot.de/2012/03/defishing-fisheye-images.html http://m43photo.blogspot.de/2014/07/olympus-9mm-fisheye-vs-rectilinear.html For my lens I found the following parameters useful: Lens type: Full frame Fisheye Focal length: 9mm Focal length multiplier: 2.2 ...



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