All Forum Comments
Comment by Mongoose posted on NEW Pentax DA 16-50 Lens Question at 05/07/2007 - 17:37
Quote:
Absolutely, that was the point I was trying to make earlier. By the way are we just assuming that the Toxtaxes are primarily Pentax optical designs given to Tokina? After all Tokina has been fairly good at designing zooms in the past... of course I don't know, but I'm wondering if we're all making assumptions here... either way I think it may be fair enough for Pentax but it still sucks for me as a consumer, taking away an option that I would have if I were with any other system! And the decision to stop producing ANY K-mount Tokinas is far from fair.
Absolutely, that was the point I was trying to make earlier. By the way are we just assuming that the Toxtaxes are primarily Pentax optical designs given to Tokina? After all Tokina has been fairly good at designing zooms in the past... of course I don't know, but I'm wondering if we're all making assumptions here... either way I think it may be fair enough for Pentax but it still sucks for me as a consumer, taking away an option that I would have if I were with any other system! And the decision to stop producing ANY K-mount Tokinas is far from fair.
yes, it's just an assumption (at least from me). I base it on the fact that a number of the lenses which are now being released as Tokina's were out under the Pentax brand for some time before the agreement, or at least before I knew about the agreement (which I acknowledge may be a different thing). The 10-17 fisheye for example was out under the Pentax name for several years before people started talking about the "revolutionary" Tokina 10-17 fisheye.
Of course the other way of looking at it is a tit-for-tat exchange, Pentax give Tokina the 10-17, Tokina give Pentax the 16-50 (or some such arrangement).
I wouldn't be too quick to discount the benefits of SMC coatings, at least in wide angle lenses. Lenses like the 12-24 and 10-17 fisheye are going to be naturally more flare prone so this is where you really need top class coatings.
Comment by Mongoose posted on NEW Pentax DA 16-50 Lens Question at 11/06/2007 - 22:20
Quote:
The Tokina lens has no SDM AF motor.
The Pentax lens will have their now commonplace 'quick shift' mechanism for switching between AF and MF (I hope).
The Tokina requires the focus barrel to be moved back and forth.
The Tokina will not have the SMC coating.
The Tokina will probably not be available in Pentax mount.
So just how similar are they? Not very, I think.
To a certain extent Barrel/Pincushion distortion and CA are liveable with because they are both controllable in post-processing.
The similarity, like all Toktax lenses, begins and ends with the optical formula. The mechanics and casings are designed separately by each company and the actual manufacture of the lenses is separate, at least for now (soon both companies will be Hoya subsidiary's, then who knows what will happen)Gwyn wrote:
Hopefully the Pentax gets a better write up than the Tokina -http://www.photozone.de/8Reviews/lenses/tokina_1650_28_nikon/index.htm
The text of that report states that the lens was co-developed with Pentax, but how much of it?Hopefully the Pentax gets a better write up than the Tokina -http://www.photozone.de/8Reviews/lenses/tokina_1650_28_nikon/index.htm
The Tokina lens has no SDM AF motor.
The Pentax lens will have their now commonplace 'quick shift' mechanism for switching between AF and MF (I hope).
The Tokina requires the focus barrel to be moved back and forth.
The Tokina will not have the SMC coating.
The Tokina will probably not be available in Pentax mount.
So just how similar are they? Not very, I think.
To a certain extent Barrel/Pincushion distortion and CA are liveable with because they are both controllable in post-processing.
Comment by Mongoose posted on NEW Pentax DA 16-50 Lens Question at 11/06/2007 - 20:58
Quote:
Hopefully the Pentax gets a better write up than the Tokina -http://www.photozone.de/8Reviews/lenses/tokina_1650_28_nikon/index.htm
bad write ups or not, virtually every wide angle 'tog on Phototakers (my other usual haunt) seems to swear by the Toktax 12-24. I'd be willing to bet there's a clause in Tokina's agreement with Pentax which states "thou shalt not use our optical designs to make cheap lenses in Pentax mount", which is fair enough. What's disappointing is that they seem to have stopped doing ANY lenses in Pentax mount, not just the Toktax designs.Hopefully the Pentax gets a better write up than the Tokina -http://www.photozone.de/8Reviews/lenses/tokina_1650_28_nikon/index.htm
Comment by Mongoose posted on NEW Pentax DA 16-50 Lens Question at 11/06/2007 - 20:55
Pentax have released lenses with the ability to support features which no current camera could use before. The A series lenses all support multi-pattern metering, but none of the A series Pentax cameras had such a system.
Comment by Mongoose posted on NEW Pentax DA 16-50 Lens Question at 11/06/2007 - 09:40
like all things it will depend on your use for it.
From what people say of it I can't see the 16-45 being beaten by much in terms of image quality, the extra asking price is going to be buying you 3 things IMO
F2.8
SDM
Weather seals
Since it's a pro-class lens the image quality will be superb I have no doubt, but from what people say so is that produced by the 16-45.
From what people say of it I can't see the 16-45 being beaten by much in terms of image quality, the extra asking price is going to be buying you 3 things IMO
F2.8
SDM
Weather seals
Since it's a pro-class lens the image quality will be superb I have no doubt, but from what people say so is that produced by the 16-45.
Comment by Mongoose posted on NEW Pentax DA 16-50 Lens Question at 10/06/2007 - 22:36
yeah but no matter what body you have you can't set the aperture from the body with a K or M series lens, since the stop down mechanism is proportional to radius and not area on those lenses. Also the camera has no way to know the maximum aperture.
Comment by Mongoose posted on Fair price for an MZS at 11/06/2007 - 11:50
Quote:
The MZ-S is more robust, and more Pentax-like, but apart from superior flash features, it's offers less.
G
George I am curious, as I understand it both the MZ-S and Z1 have aperture ring couplers, what more could you want in M/K series compatibility?Mannesty wrote:
Actually, it IS a better camera in some ways. It's got a better spec (higher flash sync, faster winder, better M/K lens compatibility, etc.) and of course it has hyper-program and hyper-manual, which have sensibly been re-introduced on the *istD and K10D.Quote:
Coz it's a better camera?
Thanks oh wise one. I am much enlightened. At least, I think I ought to be. Coz it's a better camera?
The MZ-S is more robust, and more Pentax-like, but apart from superior flash features, it's offers less.
G
Comment by Mongoose posted on Fair price for an MZS at 11/06/2007 - 09:46
looks pretty similar to the 7dayshop one, as you say should be at least good enough to decide if you really want one or not. You might be surprised, it might be all you need.
Comment by Mongoose posted on A question about Monopods ? at 12/06/2007 - 17:47
7dayshop do a very serviceable one with a quick release plate tilt-swivel head for £15.
I bought one and it's a lot sturdier than I was expecting for the price.
I bought one and it's a lot sturdier than I was expecting for the price.
Comment by Mongoose posted on A question about Monopods ? at 09/06/2007 - 23:23
So June slipped to July and now to August and noone has actually seen or held or tested a finished version in the flesh.
Come on Pentax! my K10D is going to be a year old at this rate before I can even gaze longingly at a lens that matches its features.