04-03-2011, 07:47 PM
Someone that spends 900USD for Pentax lens knows why he spent these money. Some people spend 2000USD for Nikkor prime and gets optical performance similar to 540USD Samyang lens (just kidding, sorry
).
IMHO the main question you should answer yourself - what is wrong with your kit lens and where it limits you. How fast lens you need? Try kit at 18mm f3.5 or f4 at the low light you shoot and you will see, would any f4 zoom fit to you or not. f2.8 is not far from 3.5 - push ISO one stop and you will know speed. f2.8 zoom will be sharper at f4 than f4 zoom wide open. And f2.8 yet doesn't mean that you will stop action under low light. Sometimes cheapest external flash could improve your photo better than expensive fast lens. But you have to know that, and only you can respond.
My advice - if you do not know what you need - do not buy. Stop reading reviews (seems they drive you crazy <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/smile.gif' class='bbc_emoticon' alt='' />), relax and go shooting. If you want to read - get a book about photography, or find info online (on this site, or at luminous-lanscape.com or cambridgeincolour.com). The answer will come by itself one day, and you will have money to buy what you need <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/smile.gif' class='bbc_emoticon' alt='' />.
A.
). IMHO the main question you should answer yourself - what is wrong with your kit lens and where it limits you. How fast lens you need? Try kit at 18mm f3.5 or f4 at the low light you shoot and you will see, would any f4 zoom fit to you or not. f2.8 is not far from 3.5 - push ISO one stop and you will know speed. f2.8 zoom will be sharper at f4 than f4 zoom wide open. And f2.8 yet doesn't mean that you will stop action under low light. Sometimes cheapest external flash could improve your photo better than expensive fast lens. But you have to know that, and only you can respond.
My advice - if you do not know what you need - do not buy. Stop reading reviews (seems they drive you crazy <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/smile.gif' class='bbc_emoticon' alt='
' />), relax and go shooting. If you want to read - get a book about photography, or find info online (on this site, or at luminous-lanscape.com or cambridgeincolour.com). The answer will come by itself one day, and you will have money to buy what you need <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/smile.gif' class='bbc_emoticon' alt='' />. A.