|
Forum: Pentax SLR Lens Discussion
06-02-2015, 11:34 PM
|
| |
I was responding to your post about picking the DA 15 and 21 for quality. Of course the ability to zoom or get to the FL at either end is a big benefit to the zoom.
I regularly use all of those lenses except the Samyang (which is not comparable in FL or speed). The main reason I use those primes is size. You can drop the 15mm and 21 into a waist pack, even throw in the 40 and 70, and still have room to spare. I don't see a quality difference in favor of the WA prime under anything but the most extreme flare producing circumstances, but there are a lot of situations where the 12-22 just isn't practical to carry, especially with the hood. To me, that is the biggest benefit of the DA Ltd WA lenses.
BTW, the Samyang 12mm F/2 for my Sony E-mount is two stops faster than the DA 12-24, but is still half the weight and smaller in diameter. I doubt that a 12mm, 15mm, and 21mm F4, together, designed as a Pentax DA Ltd, would be as large or weigh as much as the zoom, but that is speculation. I wish Pentax would offer a 12mm and we could find out.
|
|
Forum: Pentax SLR Lens Discussion
06-02-2015, 06:41 PM
|
| |
I don't know about that. I've carried the FA 31 Ltd. and the DA 55-300 in the bag at the same time. You have to appreciate each lens for its strong and weak points. I was ready for both these scenes when the time came.
|
|
Forum: Pentax SLR Lens Discussion
06-02-2015, 06:55 AM
|
| |
In the case of the 12-24, the quality would not be the trade off for those primes. Some feel it is just as good or better. There the trade off is size. If you don't need 12mm, then, unlike the 55-300, the zoom is several times the size of the primes it would replace.
|
|
Forum: Pentax SLR Lens Discussion
06-01-2015, 06:47 AM
|
| |
Norm, that is true from an absolute perspective, but many, if not most, of us (myself included) do not do infinite possibilities well. My zooms come back to the same focal lengths repeatedly.
Four years ago I put this to the test by taking a two week trip on the DA primes. I never missed a FOV, though fighting sensor dirt was an inconvenience.
|
