Distortion is one of the classic lens aberrations and comes in various forms. We will have a look at them, see which ones are easy to correct and how to create correction profiles for those lenses with complicated wavy distortion patterns.
Leica users where the first to discover that their old compact wide angle lenses with the rear element close to the film/sensor plane have some color cast issues on digital cameras. This is an issue that cannot fully be solved by the optical design – at least when following the quest to create compact lenses. But there is something we can do: fix this in post. How to do it? I will show you in this article.
I have already been talking about editing pictures with the help of profiles in the past in the articles How I edit my pictures and Emulating Filmlook. This time I will have a look at the Cobalt Image profiles.
Modern lenses are too good, free of most optical aberrations even at their maximum aperture. This led to a whole new market emerging offering all kind of accessories to make your pictures look worse: kaleidoscope filters, prisms, streak filters and black mist/diffusion filters, the latter being what we will have a look at today.
In one of my drawers I found two rolls of Ektar 100 from the times a roll was only 8€. Expired 2015. Not exactly properly stored. So a good opportunity to see if the exposure meter works and where I stand with the rangefinder calibration of this camera. Processing and scanning was done at urbanfilmlab in Germany.
Manual Lenses | Sony Alpha | New article every Tuesday
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