Why Pentax lenses have small front elements?

Started Apr 4, 2014 | Questions thread
Shop cameras & lenses ▾
ForumParentFirstPreviousNextNext unread
Flat view
Senior MemberPosts: 2,484Gear list
Why Pentax lenses have small front elements?
Apr 4, 2014

Of course not all of them, but I have several lenses with 49mm filter rings while I can't recall any 49mm filter rings on any Canikon lenses. What are the gain and loss of small front elements except  compactness? I remember a rough equation between FL and max aperture for front element diameter but it seems not to be the case in most modern lenses anymore.

-- hide signature --

It's the singer not the song.

 soheil's gear list:soheil's gear list
Pentax Optio 330GS Pentax MX-1 Pentax K-7 Pentax K-5 Pentax K-5 IIs +18 more
This question has not been answered yet.
ForumParentFirstPreviousNextNext unread
Flat view
Post (hide subjects)Posted by
ForumParentFirstPreviousNextNext unread
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow