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new Pentax K-70 & 55-300mm


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#1 Klaus

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Posted 09 June 2016 - 12:03 PM

Pentax K-70 (APS-C DSLR):

http://ricoh-imaging...s/cameras/K-70/

 

Pentax HD DA 55-300mm f/4.5-6.3 ED PLM WR RE

http://www.ricoh-ima...oto-Lenses.html


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#2 chrismiller

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Posted 09 June 2016 - 02:19 PM

that quiet an impressive zoom extension on the 55-300!



#3 JoJu

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Posted 09 June 2016 - 07:55 PM

You can use it as car jack, too.  :D The K70 has nice features.


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#4 Klaus

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Posted 09 June 2016 - 11:44 PM

Interestingly the 55-300mm is a new design. But yes, that zoom extension is drastic.

Makes me wondering about the centering of the thing - more so because Pentax' record in that respect isn't exactly stellar in my book.


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#5 Rover

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Posted 12 June 2016 - 11:08 AM

Electromagnetic diaphragm... now in the Pentax land as well. Welcome to 2016! :)



#6 toni-a

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Posted 12 June 2016 - 11:17 AM

Just a remark 70-300f4-5.6 wouldn't it make much more sense than 55-300f4.5-6.3 ? Knowing all those who will buy this lens already have the kit lens is the 55-70 range that important to sacrifice speed on an already slow lens?

#7 Kunzite

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Posted 12 June 2016 - 11:24 AM

I'm not impressed with the build quality of the 18-50 RE; I don't have one so I can't say anything about its reliability but that retractable mechanism looks terribly flimsy (obvious plastic-on-plastic feel). I hope the 55-300 RE will be better.

 

Regarding the electromagnetic diaphragm... I wonder, which other lenses would have it? It was included in the 55-300 RE because of the retractable design (very likely), and for smooth aperture control during video.

Nikon introduced their version also with some special lenses - 3 PC-E Nikkors; but they didn't really start with it until last year. Will Pentax do the same, would they wait a bit before large scale adoption? Or that's it, they decided to advance the K-mount in the full-electronic era?

 

If for now they're just experimenting, then the compatibility issue is at most a niggle. Pentax promised compatibility for K-70, and K-1, K-3 II, K-S2, K-S1 after a firmware update (a notable exception is the K-3... perhaps it's not identical with the K-3 II in the relevant parts).

If the new D FA primes and new APS-C lenses will use electronic aperture control, I imagine quite a few K-3 users would be annoyed.

 

Anyway... I think it's a good idea (even if I have a presumably incompatible body, a K-5 IIs). Planning is up to them, but I don't think they can afford to wait too much.



#8 Klaus

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Posted 12 June 2016 - 01:00 PM

Just a remark 70-300f4-5.6 wouldn't it make much more sense than 55-300f4.5-6.3 ? Knowing all those who will buy this lens already have the kit lens is the 55-70 range that important to sacrifice speed on an already slow lens?

 

Well, you have a 18-55mm kit lens so a 55-300mm makes perfect sense.

As far as the max. aperture is concerned - a third of a stop isn't really much of a deal.


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#9 Rover

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Posted 12 June 2016 - 02:56 PM

The other lenses they released of late - specifically the full-frame quintet - did not seem to be equipped with electromagnetic diaphragm, else the company would've made a big deal out of it. At the same time, the K-1 (like a few other bodies) is reported as compatible with this system so... that doesn't add up.

 

I can understand why Nikon went for it - because there is no (effective) way of transferring mechanical aperture linkage past the tilt-shift mechanism of a PC-E lens, and leaving these lenses' aperture to be only controllable through a mechanical ring was probably deemed inappropriate for the 21st century. That was probably the reason why there are no tilt-shift lenses for Minolta/Sony and Pentax mounts - except, of course, for the fully "dumb" Samyang. Now Pentax has solved the issue, and I'm wondering if Sony is going to do the same.



#10 Kunzite

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Posted 12 June 2016 - 03:20 PM

What doesn't add up?

All it takes is a bit of planning and thinking ahead, so they'd already start adapting the cameras when they planned the development of the electromagnetic diaphragm lens.



#11 JoJu

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Posted 12 June 2016 - 05:17 PM

Kunzite, all planning and everything ahead: you don't really think, a PC lens from Pentax will appear anytime within the next 3 years or so?

 

Anyway, there are other lenses a electromagnetic aperture actuation makes sense, i.e. long teles. And here I can imagine a joint venture of Ricoh with Tamron although the Tamron 150-600 is not really breathtaking but still a nice piece of glass.



#12 Kunzite

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Posted 12 June 2016 - 06:34 PM

I never said anything about expecting a PC lens from Pentax within any interval of time. The only resemblance to the 55-300 RE is the special construction making the electromagnetic diaphragm pretty much a necessity.

 

Joint venture, to what purpose? Pentax has all the technology it needs, and a nice tele zoom (the 150-450).



#13 JoJu

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Posted 12 June 2016 - 08:55 PM

If it has all the technology it needs, then why use Tamron's 15-30 and 24-70 and just rebrand it?

 

150-450 is something for APS-C in my opinion. The K-1 got some outstanding cool features with it. It's just a shame, Pentax keeps on repeating the behaviour to come too late to the show. They did it decades ago with their LX which was as well a pretty cool professional body with some great features - and the professionals stuck to their Nikons or Canons although Pentax' lens portfolio was quite huge and of good quality. Okay, that's old stories. To me it just looks like Pentax burns a lot of energy and money on a field the cannot win a noticeable market share.

 

But then, that's entirely not my business and if Die-hard-Pentaxians like you finally got the long awaited FF-body - cool.  ^_^



#14 Kunzite

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Posted 12 June 2016 - 09:43 PM

Neither 15-30 nor the 24-70 bring some technology inaccessible to Pentax. Why rebranding them? I'd say, time (to have them ready when the K-1 was supposed to be launched - it was planned for 2015) and money (to get them at a lower price point than pure Pentax designs).

 

Note that I've seen some very interesting claims that it's not a simple rebadge - the optics are said to be different (improved), and the coatings, Pentax' own HD. The published specs agree with this, but I can't offer any other proof (I'd like to see that myself).

 

150-450 is no more "for APS-C" than, let's say, a Canon 100-400 or a Nikon 200-500, or other similar lenses.

 

The same old "OMG Pentax is too late, panic!"... really? Don't you realize how ridiculous this sounds, also your other posts on the subject, while Pentax can't make enough K-1s to cover the demand?



#15 JoJu

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Posted 13 June 2016 - 05:21 AM

The only ridiculous thing I see, with a tendency to be pathetic, is your behavior of defending Ricoh/Pentax for everything they could have done but didn't. And producing not enough units to fulfill the demand says just something about production capacities, not superiority. This happened to all producers and I wonder how much influence the earthquake has to this. Not getting enough Sony sensors must be hard for every producer depending on those. So, not be able to make enough bodies can also indicate a shortage in supply of essential parts...

 

Speaking of tendencies: Putting other words than I or somebody else said into posts is your speciality and you stick with that. I know it's pointless to tell you, fanboys have to be ignorant against any trace of critic, that's normal for them. It's kind of amusing how reliable your defense automatism works.



#16 dave's clichés

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Posted 13 June 2016 - 07:46 AM

If Pentax is to remain in business (and they are certainly pledged to make money for Ricoh) they have to go slowly and slowly means cutting costs and using the "off the shelf" help of Tamron, even though they are rebadge/remodels, after all a profit on a medium run of cameras is better than a loss on a huge unsellable one.

 In any event it's utterly pointless criticizing their past behavour, all that matters is the "now situation" and that looks at least stable. 
 Owner/users of a brand should bring a certain support to the table and boast the features that attract them to the brand, by that, naysayers also have the right to their opinion,  but to me.... "you no like, you no buy" says more than any words can! 

 

BTW. I doubt any change in optical formulas above and beyond coatings and removal of VC with the Tamrons. 



#17 JoJu

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Posted 13 June 2016 - 08:26 AM

Well, dave, "If Pentax is to remain in business..." is the big point. After my experience with a Tamron/Pentax combination (in entry level, I'm aware this camera is way above) and both were accusing each other not to be able to deliver sharp results, I at least raise one eyebrow if those two are now playing together.

 

It's true, what matters is now. If you can blow a couple of thousands today for a great featured FF body plus lenses, super. Who cares about tomorrow? It won't be the first nor the last product which dies quietly although users are perfectly happy with.

 

As for the lenses: I don't know how the coatings come to the glass - in a Pentax coater or with Pentax formulas in a Tamron coater. Giving key technologies out of hand is always a sign of a desperate manufacturer, so I guess Pentax is doing it, ships back the glass to Tamron's assembly line? Or gets the parts like barrel and polished glass an assembles them? How about the necessary tools and fixtures? But at least they could use tighter tolerances to improve serial consistency.

 

In any case, collaboration of two manufacturers is not bad, but one has to face additional complications in assembling and to solve these issues before customers becoming aware of any.



#18 toni-a

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Posted 13 June 2016 - 08:33 AM

Dunno why we are underestimating Pentax.

Compared to the big players against whom they are competing they are a struggling small company however in absolute terms, that's a profitable company, their production chains are working at full capacity,  they manage to sell all the goods they are producing.

Logically,  those are the objectives of the owners and CEO, IMHO they are fully accomplished.

From a user point of view yes that's a different story, but it is clear they aren't on the path of Samsung camera system


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#19 JoJu

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Posted 13 June 2016 - 09:30 AM

I don't think a big company is a warranty against dead-end development. Sony is an excellent example for that. And Nikon, while it's reliable on their mount, is not as innovative as Pentax proved to be with their version of FF. Also, their MF body is available and alive for quite a while now.

 

 

 

but it is clear they aren't on the path of Samsung camera system

 

Well, then your crystal ball is more informative than mine  ;) But I would agree that Pentax knows photographic business while for Samsung it was just another branch in it's portfolio.



#20 Kunzite

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Posted 13 June 2016 - 01:03 PM

The only ridiculous thing I see, with a tendency to be pathetic, is your behavior of defending Ricoh/Pentax for everything they could have done but didn't. And producing not enough units to fulfill the demand says just something about production capacities, not superiority. This happened to all producers and I wonder how much influence the earthquake has to this. Not getting enough Sony sensors must be hard for every producer depending on those. So, not be able to make enough bodies can also indicate a shortage in supply of essential parts...

 

Speaking of tendencies: Putting other words than I or somebody else said into posts is your speciality and you stick with that. I know it's pointless to tell you, fanboys have to be ignorant against any trace of critic, that's normal for them. It's kind of amusing how reliable your defense automatism works.

 

Oh, right. I should've thought of the Kumamoto earthquates.

Except I did. And while they likely had an influence on the production after they happened, they couldn't affect the initial batches. There has to be a delay between manufacturing components, shipping to assembly factories, making the products, packaging and shipping them, and reaching the retailers - so the effect could only start to be seen quite a bit after 16th April.

But even the first batches were utterly insufficient, to a scale I would call unprecedented.

 

L.E. On a funny - or not - side, Ricoh Imaging published their note about "some impact on the future production of our lens-interchangeable digital SLR cameras, interchangeable lenses and digital compact cameras" on May 27th.

 

Speaking of tendencies: I've seen too often how people with an agenda of brand bashing would call others "fanboys" and such, "supporting" criticism by personal attacks.

And the best clue of a "fanboy" is that he would attack other brands and their users, to "diminish" them compared to his own. Just sayin'.






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