18-135/3.5-5.6 aperture steps?

Started Sep 26, 2012 | Discussions thread
JeffAHayes Senior Member • Posts: 1,968
Re: 18-135/3.5-5.6 aperture steps?

Although it's not a WR lens (only thing I don't like about it), the Pentax 55-300 F4-5.8 stays at F4 until ALMOST 200mm (I think it's somewhere around 170-180mm when it hits F4.5). For a lens that sells for only about $360 (a couple hundred LESS than the 18-135), I don't think that's a bad deal, at all. And the image quality is pretty good. I've seen comparison images posted here between that lens at 300mm and the DA* 300mm F4 (which I didn't have at the time, but do now), and you really could NOT tell a difference in image quality until the 100% crops were posted. Even then, the difference, while obvious, was pretty insubstantial considering the price and size differential between the two lenses, and the fact that the 300 F4 is one of Pentax's TOP prime lenses.

If you really want a fast lens combo from 18-135 your only real choice with Pentax is to buy TWO of the DA* lenses... the 16-50 F2.8 and the 50-135 F2.8. You'll spend $2,000 -- maybe more, depending on where this UPP stuff is at the time, but you'll have fast zoom from 16-135.

On the other hand, the images I've seen posted here from the 18-135 all look pretty good to me (I don't own one and probably won't at current prices, since I have those ranges covered other ways). So unless you just HAVE to have faster F-stops, enjoy your 18-135 and just shoot at a slightly higher ISO. Your images may never show the difference.
A word is worth 1/1000th of a picture... Maybe that's why I use so many words!

 JeffAHayes's gear list:JeffAHayes's gear list
Pentax WG-3 Pentax K-5 Pentax K-30 Pentax K-3 Pentax smc DA* 16-50mm F2.8 ED AL (IF) SDM +8 more
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow