10-05-2012, 06:35 PM
Hello Klaus!
First of all, thanks for maintaining such a great website!
With the advance of super-zooms and in-camera distortion-correction I think I see an increase in lenses that are released which have a high degree of distortion. What I always wonder with these lenses, is what their actual zoom range is after the image is corrected? Maybe a 18-200 with both barrel- and pincushion-distortion would have an effective zoom-range of only 22-180 after correcting the images.
Do you think it would be possible to include, in the review of a lens, the 'corrected' focal length or range?
If we look, for example, at the Olympus M.Zuiko 12mm f/2 ED, it has a barrel-distortion of 5.4%, which is corrected in-camera. This means that of the original wide field-of-view, quite a bit is lost in the distortion-correction. Would this equate to maybe a 13mm or 14mm lens that doesn't need the distortion-correction? Or, does Olympus take this into account and is it actually a 11mm lens that gives the FOV of a 12mm after the in-camera correction?
Kind regards,
Bart Roskam
First of all, thanks for maintaining such a great website!
With the advance of super-zooms and in-camera distortion-correction I think I see an increase in lenses that are released which have a high degree of distortion. What I always wonder with these lenses, is what their actual zoom range is after the image is corrected? Maybe a 18-200 with both barrel- and pincushion-distortion would have an effective zoom-range of only 22-180 after correcting the images.
Do you think it would be possible to include, in the review of a lens, the 'corrected' focal length or range?
If we look, for example, at the Olympus M.Zuiko 12mm f/2 ED, it has a barrel-distortion of 5.4%, which is corrected in-camera. This means that of the original wide field-of-view, quite a bit is lost in the distortion-correction. Would this equate to maybe a 13mm or 14mm lens that doesn't need the distortion-correction? Or, does Olympus take this into account and is it actually a 11mm lens that gives the FOV of a 12mm after the in-camera correction?
Kind regards,
Bart Roskam