Wait, when u guys talking about 50 1.7 is it the F50 1.7 af? its a hard lens to find now. FA50 1.4 is easy to find nowadays.
Prime lens is depending on what u guys wanted. Some prefer zooms while some prefer to move backward n forward when using Prime lens since it gives out more addiction for future lens buying I guess. haha.
Zoom lens usually provide u with ease on changing the focal lenght of ur desire. But IQ is sometimes abit lower than Primes for those cheap zooms (Usually distortions). Which is OK for me actually since u not doing it for like a magazine shot or stock photos. Even Cheap Primes does have its problems. But that problem people will usually make themselves happy by saying it has CHARACTERS. heh.
My suggestion is GET a KR with double kit lens 18-55+50-200 or 18-55+55-300. Then from there, save some money n get urself a FA50mm 1.4 or F50 1.7(Sometimes pop-up in Buy&Sell or EBAY).
OR get an old Manual Lens of ur desire Focal Length. 24,28,35,40,50,55,58,85,105,135,200,300. Manual Lens(prime or zoom) is not for people who wants easy life. a DSLR is a tool for u to learn Photography n be good at it. A lens is the key to make that effort worthwhile, be it a bad lens or a good lens. My first Old Prime lens is a Manual COSINA 50mm 2.0 with a bad front n am Happy with it till today. Manual lens does teach u about accuracy in manual focusing, speed in focusing and even taking time to understand the surrounding while thinking if this is a good shot since a manual dun let u use with ease in terms of speed since the speed is ur fingers to begin with.
Manual lens can range from 60bucks to thousands of dollars depending on the makes n quality. But dun judge the quality of the manual lens just from their price. My suggestion when u saw a K-mount(PK,PKA) Manual lens on Ebay or B&S and thinks its for u but thinking if the lens is good or not, then there is always FLICKR n Google which u can just type the lens name n search. u can be surprise at some cheapo primes that gives out different colors n characters. this is the part where u ask urself if the Prime or old zooms is for u or not.
This is my el-cheapo Cosina 50mm f2.0 gives me. I sold off my FA50 but still keep this lens. Though FA50 is good, but I'm in love with Manual Lens. hehe.
danger by
Salleh, on Flickr
IMGP3469 by
Salleh, on Flickr