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Forum: Pentax SLR Lens Discussion
01-29-2019, 12:31 PM
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Hey guys.
Huge thanks to all those that have commented on this thread and provide instruction and guidance. I have just completed the modification on my 60-250mm by removing the baffle and tube completely. I think the biggest concern is that the gearing and motors are now exposed greatly when changing lenses, which obviously in poor weather and conditions is something to pay extra care an attention too. If I can get my hands on one of the 3d printed replacements, I will re-mod to include the tube, I think this would give me more peace of mind.
Reasoning for the mod, for me at 200mm and above the vignetting on the K1 is too high and even in post I found I was cropping my images aggressively, and even with LR lens corrections it was still more than I really wanted. So hence trying the modification.
So I shot a before and after to see what sort of difference it makes i have attached the image below and uploaded a hi res version to flickr for those who want a closer look.
Please note this wasn't a scientific approach to testing. Simply 3x images with the default lens, focused on my monitor at 60mm F4 / 200mm F4 and 250mm F4 - Then performed the mod and repeated the x3 test shots at the same settings. So if anyone is interested here the results and findings...
60mm not much of a difference perhaps a slight improvement in general.
200mm / 250mm a huge improvement over the stock lens to my eyes and tastes
These images are straight out of camera, no lens corrections applied. I suspect the improvements would be even more pronounced with Lens Corrections applied.
FLICKR > Pentax 60-250mm Baffle Mod - K1
As a plug! if you guys like the above, show your support for a fellow Pentax shooter, why not give me a like, subscribe and view on my Youtube Landscape Photography Channel :)
Regards
Geoff
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