Originally posted by mmphilip In my experience, 28mm is a better focal length for a walkaround lens. It is a "perfect normal" (i.e. 28mm is approximately equal to the diagonal of the sensor) lens on APS-C (for whatever that's worth). There is a HUGE array of 28mm lenses to choose from, both from Pentax and third parties, especially Vivitar, and they range in price from dirt cheap to $1,000+.
However, if you want something that fits snuggly in between 15mm and 35mm, 24mm is your guy. Some will say that the FA* 24mm F/2 is the "best" Pentax-made 24mm lens. It's probably the most expensive. One in very good shape will run $500-$600. I have one and I'm not all that impressed. It's large and clunky and I don't fine the IQ to be all that great. I haven't used the K or A 24s.
Another 24mm option, especially if you want something fast, would be a Vivtar 24mm F/2. There are a couple different versions made by Komine and Kiron. I have the latter and it's a nice lens. Reasonably sharp wide open (though not super contrasty) and very sharp stopped down. It has a dreamy quality when used wide open that can be an asset in some situations. On the downside it flares terribly and evidently the aperture blades are prone to getting sticky with oil. The price is right, however. I think a very nice one can be had for less than $150, and it's a beautifully crafted lens.
My $0.02.
- Mike
Thank you, Mike! Appreciate your recommendations. Certainly these are lenses I hadn't known about and I will look into them! Thank you!
Originally posted by joe.penn Lori, can you go into more detail or define your walk-around? Here is the issue, it is extremely hard, if not impossible, for any one prime to be a walk-around lens, unless:
1. You walk-around and carry your camera in the same exact environment every time you put that walk-around lens on
2. See 1
3. See 2 (again, back to 1)
The "considered normal" focal length is true 50|55mm which on a cropped sensor would be the 35, but normal really isn't a walk-around focal length - also, what is a good walk-around lens|focal for one may not be good for someone else.
Where will you, well, be walking-around with it and shooting?
Hi Joe,
Well, I was reacting to people suggesting 24mm is a good focal length as well as the fact that there is that hole in my prime collection between 15 and 35. I do like to do landscapes from time to time and have noticed that sometimes the 15 is just a bit too wide and the 35 is a bit too long. Just looking for something of good quality and sharpness/contrast to fill in that hole, I guess.
Originally posted by baro-nite
loco, here's a thought. Set your kit lens to 24mm (or 28mm) and try some walk-around sessions where you stick to that FL. See if you agree that it is ideal. (NB: use the INFO button to confirm the FL.)
Thanks! That's a good idea, which I may try out! Leads me to the next post.....
Originally posted by lytrytyr I'm a big fan of the 24mm/1in focal length on APS-C,
perhaps conditioned by many years using a Summicron 35 on a Leica M2.
Disregarding the kit lens, I have three options at that length:
1. A Tamron 17-50/2.8 A16P, which is one of the best-resolving
and most distortion-free 24mm primes on K-mount.
2. A K24/2.8, which pairs up with a K-x to make a compact walk-around setup.
3. A ZK25/2.8, which is a really special lens in many ways.
Sizewise, K24 < ZK25 < A16P.
IQ-wise? Maybe A16P < K24 < ZK25,
at least in terms of color, rendering, and the intangibles.
The Tamron is best from the technical standpoint
(resolution and distortion), but in a soulless, digital way.
If you like the DA15/DA35 prime setup,
are comfortable with manual focus,
and want a cheaper 24mm prime that's comparable size and speed-wise,
a K24 or A24 should fill the bill.
Thanks very much for your feedback. It's especially interesting to me since I have long been considering the Tammy 17-50 as a kit lens replacement. If it's that good at 24mm so that it's comparable to a prime, then I may have my answer. Sort of kill two birds with one stone.
Does anyone have extensive experience with the 17-50 and landscapes?
Originally posted by sterretje Do you really miss that 24mm? Or is it because some keep on telling you that. I suggest that you stick your kit lens on the camera, fix it on 24mm and see how you get away with it. Don't cheat
If you like it, your 35mm will probably be obsolete.
Thank you for your feedback. Yeah, I do miss it, as I mentioned earlier. And I think I would likely keep the 35 at least for now as I have discovered it's a great lens for product/light tent photography.
Originally posted by RioRico On my K20D, 28mm is exactly 'normal' and is my favorite focal length for countrysides. In town, I prefer 24mm or 21mm. As mentioned, zillions of 28s are available over a tremendous price range. Some of my best were among my cheapest: Vivitar-Komine 28/2 CFWA, Tamron BBAR 28/2.5, Vivitar-Kiron 28/2.5, all dirt cheap, all manual of course.
Inexpensive 21s are pretty rare; I was lucky to get a Lentar-Tokina 21/3.8. But it can't be beat on daylight streets. Set the aperture to f/11, hyperfocus to 2m, and have DOF from 1m to infinity.
I like 24s indoors. My best is the Vivitar-Kiron 24/2 that cost me US$135 and worth every centavo. (My total cost in getting it was more like US$200 but that's another story.) It's what I use to capture squirmin' vermin (grandkids) in their native habitat. My next favorite is the ultra-clean Super-Paragon (Cimko) 24/2.8 for US$10 shipped. I've had a couple Sigma 24/2.8s, they're OK but not spectacular. For a sharp bargain, look for a Lentar-Tokina 25/3.5 -- but check the iris blades, both of mine were stuck wide-open.
Thanks, RioRico! Always appreciate your expertise in this area! I may have to look into the 28s. Maybe as suggested earlier, I could use the kit lens to compare the two focal lengths and really see which one is best for what I'm looking for. Looks like there are more options at that length, at better prices. Glad you mentioned the Sigmas weren't that great in your opinion, since I had been looking into those.
Thanks to all for the great feedback! As usual, at Pentax Forums, you ask a question and find yourself often leaning in a totally different direction than you began.
You guys always make me think!