Originally posted by phoenixvision One point you might want to consider as well is that the lenses will generally hold their value...and be of use to you whenever you upgrade your body, but bodies in the digital age, eventually become obsolete......so lenses are generally a better investment and will improve the quality of your shot significantly,
Absolutely... My DSLR lost half its value in 3 years - even getting a great deal on a used body to begin with. The kit lens that came with it lost 25% of its value over a 4-year timeframe. Glass that isn't consumer crap holds its value outright.
It's really, really rare that you lose significant amounts of money from owning glass, unless you get ripped off to start with. You may lose Paypal fees and shipping, but usually the glass itself won't sink in price, it's just a slightly-less-liquid asset with some trading fees. Because I'm an incorrigible bargain hunter, I've actually made a decent profit just from buying and selling glass, and I get to keep the real gems. It doesn't come close to funding the hobby, but it helps defray the cost of some nicer toys than I could normally afford.
Now that said, if you did not own a body that is capable of shooting reasonably at ISO 3200 or 6400 (which the OP's K-30 is), then I HIGHLY recommend jumping to a body that can do that. High ISO + fast glass is a wicked combination, and they're not that expensive these days.
Also - if you are willing to lay out some cash, jumping to FF is worth it. It's not the same value proposition as APS-C, but it IS higher performance at a higher cost. A D600 is a really nice shooter, or an A7/r is a serious value/capability proposition if you're into manual focus primes. /activates flame-proof suit
Originally posted by VoiceOfReason I'd almost get the Sigma 18-35 f/1.8 if I were you. It is fast, sharp, and gets you going really nicely on the wide end of things. You should also be able to sell it for nearly what you paid for it if you decide it isn't for you.
Without question, that's a top-notch lens.
The Tamron 17-50 f/2.8 beats it in terms of value and zoom range - but it can't match the aperture or the performance, and the focusing motor sounds like an angry hornet's nest. If you want to jump to something more than just maximizing your value - the 18-35/1.8 is a great contender.
My other suggestions would be a Sigma 35/1.4 Art or Sigma 50/1.4 Art. Both of those are top-of-the-line primes. If you want to go cheap and are willing to deal with manual focus - the Samyang 35/1.4 and 24/1.4 are both fabulous too, and the value CAN'T be beat. We're talking a top-of-the-line 35/1.4 for $300 if you shop around, that's chump change in Photo Dollars (current exchange rate between $2.0 and $10.0 USD to $1 photodollar depending on your level of addiction
). Buy yourself a $30 focus screen off eBay using the $500 you saved over the Sigma, or maybe even splurge for the katzeye, and focusing will be easier than you ever imagined. I don't trust AF in low light anyway.
What can I say, I like available light shooting, so I favor fast primes (or superfast zooms) and high ISO