Originally posted by Jonathan Mac K 55mm f/1.8. I haven't used this lens for ages but after using my SMC Tak 55/1.8 just before, and for the same subjects in the same place, I can say that the K is considerably sharper.
Originally posted by baro-nite Interesting, given that per the database here they appear to have the same optical formula. I do love my K55/1.8.
Originally posted by HoutHans Yep, that seems the case, however, the K is considerably heavier and appears to be slightly bigger. It definitely takes a bigger filter, so there must be some differences.
I've had this discussion in another thread... There is a difference, depending on with Tak 55/1.8 you have. For example, I have the K and Super Tak 55/1.8 and while the formula might be the same, the elements vary. Some Taks 55/1.8 are known to have used Thorium in an element. This makes them different from other taks, and the K.
My Super Tak has thorium - hence it will be different than my K.
From our database on the Tak 55/1.8 = From the 1965 version, at least one of the glass elements is made from radioactive glass which yellows over time.