So, a few months back I snapped up a reaaally cheap Sigma 20-40mm/f2.8 – brand new from Digital Camera Warehouse for like $315 (they look after me well! ☺ ) - http://www.digitalcamerawarehouse.com.au/prod2549.htm . I thought, what the hell, I’ll give it a go for that price, and the reviews weren’t too bad. Most just complaining about flare and vignetting which are two of my favourite things! Lol.
It has been sooooo frustrating! Really hit and miss, some shoots have been beautiful, and others blergh! Last night, I happened upon this post: http://pentaxdslrs.blogspot.com.au/2012/01/front-or-back-focusing-problems-free.html And so, I followed it and tested the lens today. I have heard heaps about “back-focusing” issues but never really knew what it meant as I’ve never had a focusing issue before. I discovered that the 20-40mm has a baaaaad back-focusing issue! It is beyond the scope of the -10mm adjustment on the K5, so I’m going to send it back tomorrow. Cool though cause with some recalibration, it may end up being a really lovely little lens for the price. When it focuses correctly, in shoots that are close up, I really enjoy using it, and it gives a lovely result. Anyone else have this lens or any experience with it? Tan. ☺ -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
