Why use Pentax?

Started Mar 18, 2013 | Questions thread
audiobomber Veteran Member • Posts: 5,761
Re: Why use Pentax?

ultimitsu wrote:

The above is just a bunch of generalities, with one specific example. It's true that the Pentax 16-50 doesn't fare well at current pricing. But where are the reasonably priced WR lenses from other makers? Hint, there are none.

I understand WR is a big selling point and can understand people who put that on their priority list. For me however, IQ is at the top of the priority list. I have been shooting SLR for 4 years and never once had the urge to shoot in the rain, or on a windy beach.

WR is a necessity for me.

Why criticize Pentax for having a 50-135mm f2.8?

I am not criticising Pentax for having it. I am just saying pentax goes out its way to make lenses of unconventional FL to avoid comparison.

They're making APS-C lenses for their APS-C cameras. Others should be doing the same thing, especially since most DSLR's sold are APS-C.

But on the evaluation of this lens, I do find it not as good value as competing lenses from Canon and nikon at its old price. I see it recently being listed at 1100 USD instead of its usual 1650. at current pricing it is indeed good value.

The 50-135mm is as good as any 70-200mm f2.8 zoom from other brands, with pro build quality, dust and weather-resistant and is more appropriate focal length on APS-C. This has been shown in many tests and testimonials. The price has been bumped up lately, but it does go on sale periodically.

You should criticize Nikon, Sony and Canon for not having one. A 70-300mm 2.8 is a full-frame lens. On APS-C, it's too long for traditional portrait, and too short for real telephoto.

with respect I do not agree with that sentiment at all. 70-200 works very well on APs-C. As a canon user I have a 17-55, which is effectively 27-88 on apsc, it is more than sufficient to cover my portrait need. on top of that I have a super cheap 50mm if I wanted shallower DOF.

70-200 on canon aps-c is effectively 112-320, that is a very good range, from long portrait to telephoto. i have been using this lens for a lot of action shots and animal shots. majority of my shots were done at 200mm end or close. a 50-135 would not have worked nearly as well.

The standard set of pro lenses is 24-70mm and 70-300mm f.28, on FF bodies. That is an indisputable fact. Pentax only has APS-C cameras, and supplies equivalent focal lengths to the standard pro kit. You're buying into the FF focal lengths for your APS-C camera because that's what Canikon offers. You are an ideal Canikon user.

2, Pentax is not exactly known for industry leading AF. Personally speaking, one of the biggest reason of buying SLR over mirrorless is for the AF. I want the ability to shoot action, wild life and BIF. Canon just seem more established in that area.

Yes, the pricier Canons and Nikon have better tracking, but the D7000, 60D and lower are very comparable to Pentax.

I am not sure if that is so. D7000 has a 39 point AF while K5 is a 11 point.

The Labo FNAC test labs didn't count AF points, they measured distance covered before acquiring focus on a moving target, and number of hits on a target moving toward the camera at high speed. The K-5 acquired focus in .31m and had 15 hits on the approaching target, with the closest hit at 10m. The D7000 took .47m to acquire focus, and had 15 hits on the approaching target, with the nearest hit at 11m. As you can see, the K-5 did slightly better.

More focus points can actually be a disadvantage. Without lots of processing power, it can take longer for the camera to decide which point to use and can increase the likelihood of the wrong point acquiring focus. Some people advocate using reduced points for action for these reasons. Pentax offers a 5-point mode on some bodies, which concentrates the sensors around the center of the field.

3, Many people, myself included, would like to leave the option of going FF open. FF price falling is inevitable, FF will always provide better IQ and more DOF options. with canon, one can have a FF upgrade path; with pentax, one is stuck with aps-c.

Pentax FF is coming, as per recent Pentax interviews.

I would not hold my breath to be honest, and if it does come my money is on that it will not be compatible with significant majority of the modern lenses. Pentax never had FF on its strategic roadmap, all its modern lenses are made for APs-C. Pentax wanted its high end users to move onto 645D (understandably). the current low manufacture cost and low prices of FF such as D600 and 6D somewhat caught pentax by surprise. Of course they want to get into this market but they do not have the same lens line up to attract potential purchasers.

Pentax has stated they will release a FF body in the near term. Call them liars if you like, I believer them. All current Pentax primes 31mm and longer cover the 35mm frame, as tested on Pentax film cameras. I have the following in FF compatible lenses in my kit, FA 28, FA 35, FA 50, D FA 100 macro, A*300mm f4. All of these lenses were designed to mount on film cameras. I also have a DA 40mm Ltd and DA* 300mm that are updated versions of older film lenses. All I need is a standard zoom and I'm all set for FF. Pentax is already working on a body design the only lenses they need are the standard pro lens kit, something like 24-70/70-200 f2.8.

4, IBIS has its strength, it should make stablised lenses cheaper...

You can't get Canon or Nikon stabilized primes below 100mm.

canon is slowly bringing them out, the new 24,28 and 35 are all IS. but they are way too expensive for what they are. definitely not a system selling point.

I'll say. ILIS is good for Canikon, it allows them to sell you the same feature over and over again. It's absolutely ridiculous that they don't offer IBIS. It is defeatable you know. If one prefers IL, turn it off in the body. Some Pentax shooters use Sigma OS on the super teles.

I understand you general sentiment and would agree that your views are valid, i think we just have different values. Last year I had a chance to use K5 and 12-24 + 50-135. I liked its DR capability but was not impressed with the IQ of either lens. I find Canon 10-22 and 70-200 to be superior.

I have no explanation for your bad experience. I would just say that I've read many accounts from people who would disagree.

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