Hi, Nick. I can see why you're interested in the three lenses you list.
They're all fine. However, given that you also state you're looking for
inexpensive lenses, I'll be a bit subversive in suggesting that as a
starting point you consider zooms instead of primes. I'm assuming that
when you talk about portraiture with these lenses you mean
head-and-shoulders type work rather than environmental portraiture.
Fast primes have the advantage of being easier to focus in dim light than,
say, f/4 or slower zooms. Personally, I prefer the feel of primes to zooms
in general.
However, if you're doing head-and shoulders portraiture, your working
aperture is highly unlikely to be wide open. My guess is that you'll be
somewhere in the f/5.6-f/11 range. To achieve those apertures, chances are
lighting levels will be relatively adequate for focusing purposes. Also, the
Program Plus viewfinder is fairly decent. Under those circumstances a fast
prime would be nice but not absolutely essential.
Decent zooms can be had for less than the primes you list. You would have
the added advantage of trying different focal lengths as an aid to making a
final selection of a prime lens.
I have an M 70-150/4 that is a really sweet lens and very compact. The A
70-210/4 is also very good. I'd be comfortable using either for portraiture
if on a budget. Or you could get a K 85-210 (sharp but the size of a
bazooka) and scare the hell out of your subjects...
I guess the choice depends in part on how you define inexpensive.
Cheers
John Poirier
Original Message -----
From: "Nick Wright" <[email protected]>
To: "Pentax-Discuss Mail List" <[email protected]>
Sent: Friday, February 06, 2009 6:59 PM
Subject: Re: short tele primes
Exactly the reason I won't be buying one. ;D
I'm specifically looking for inexpensive lenses.
~Nick David Wright
http://pedalingprose.wordpress.com/
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