Really! It's all because of the lens. When an image is focused onto the sensor or film, it has to pass through a curved surface, and basic trigonometry demands that the XY coordinates of the flattened image are not in proportion. You would have to project onto a curved sensor to fix that. But a digital camera could automatically do lens distortion corrections. I am not aware of any in-camera lens distortion software. Hopefully you can tell me and other readers if you know of any cameras that offer it.
But there is some software which will automatically correct lens distortion in the digital darkroom. PTLens is software that corrects lens pincushion/barrel distortion, vignetting, chromatic aberration, and perspective. It recognises many commercially available lenses and exists as a stand alone application or a plugin for photoshop.
I'm on the train at present. I bought a 3G dongle about 8 months ago and it is a great tool. I hate wasting time, and I hate traveling the same route day in day out. I like travel, but it needs to be interesting. The daily commute can be boring. Of course, I could drive the car , but is that the best use of time? On the train, you don't need to just stare out of the window. With a 3G internet access it's possible to clear all the email and social networking messages. You can make plans and get set up for the day, update your blog and do research.
But the best use of time I saw recently was tweeted by
@HR_Thompson_AZ "Check this video out -- Kathleen McElwaine: Watercolors http://youtube.be/ataLdnoDCZM. Check it out!
This is a drawing of my left hand. It's a small drawing - about 3/4 life size. Most of this, I did while on the train.
If you don't want to buy and register your own domain name, there is a free service that lets you look like a purchased domain:
For example : http://www.spooks-art.tk/
This is available at: www.dot.tk
The upside is obvious as it's free but we all know that free usually comes with a price. Here is the cost:
(C) Jeremy Lee 2010, all rights reserved.
Note: I am allowing the blogs in the category 'Book' to be stored for personal use only, but not for distribution or commercial use. Should you wish to reproduce any material, please contact me for negotiations.
spOOk's art is owned by Jeremy. He has practiced drawing and painting for about 40 years, and might get good at it one day. spOOk's art is focused on graphite portraits.