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Tuesday, 24 July 2007

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Now, if only they release a converter that will let me use my legacy Contax mount lenses with a Pentax....

I like the idea of these lenses. What I'm not really sure about, though, is who they are for. Their build is excellent and going by reviews on other mounts the performance is very good. But for many focal lengths you have older Pentax lenses, also with excellent build and with great performance, at lower cost. Is, for instance, the Zeiss 50/1.4 really that much better than the A50/1.4 (which can be had used for a fraction of the cost) or the current FA50/1.4? Is the T* 35/2 really so much better than the FA35/2 (or the 31/1.8?) that it's worth the cost?

I guess my interest is mostly for the 25/2.8 (which doesn't really have a current equivalent) and perhaps the 85/1.8 - though the Pentax 77mm has arguably a "better" focal length on APS format.

Here's a question -- why is it these high quality glassmakers can make lenses for Four Thirds or KA mounts, but don't make them for the much more popular EOS mount?

Sigma and Tamron show it can be done.

Is it merely because Canon lens already exist for these focal lengths already?

In one of the discussions there was a note by some guy associated with Zeiss that Nikon FM mount by Zeiss was offered because Nikon has discontinued that mount but industry is still using it. I wonder if this is similar in the Pentax case.

DASMB: Canon does not license EOS mount. All third-party makers reverse engineer it which might be too much of an effort for Zeiss to justify.

Now if Pentax will just make a pro DSLR body.

Eolake,
Depends. They're all 35mm lenses, usable on 35mm film cameras. But since they're all very new lenses they're probably coated for digital applications, i.e., against light impinging from the back (reflected off the sensor). So your answer is probably "yes and no," depending on what you mean.

Mike

prime lenses are graet.

sharper, bigger aperture, and yet SMALLER.


but then, are most people still willing to use manual focus lenses?

i maen, i love manual cameras, and are planning to get a Leica M8 (or M9) kit someday in the future,

but manual focus lenses are only useful is some occations...(for example street photos with preset focus and stepped down and hyper focus)

but the most ideal set up is still probably a super sharp prime lens with a good manual focus scale, and yet still has auto focus (USM type)

but i hate the lenses such as the one Canon has, because its focus knob isn't fixed, (for example you can't fix the focus at 3meters bceause the knob is too loose, and is too easily moved)


there are too many compromises in photography, totally unnecessary ones at that.

Strange. Pentax, Hoya now Zeiss?

Presumably Zeiss is avoiding the EOS mount because of Canon's consistent effort to make life difficult for 3rd party lens manufacturers. Look at Sigma's problems with having to re-chip old lenses for new Canon bodies. Zeiss probably doesn't want to be in the same boat. The K-mount is relatively simple and pretty well standardized; it's an easy/cheap way to get access to a new market. A lot of Pentax users also still use old manual focus lenses on the latest cameras, so the fact that the Zeiss doesn't offer AF isn't a deal-breaker like it might be to those Canonites used to having USM for everything.

Yes, I mean coating, and also angle of incidence.

But if they are new designs, surely they've thought of that. And they do seem pretty big, which indicates it.

"Strange. Pentax, Hoya now Zeiss?"

Not sure exactly what you're implying, but there's been no arrangement between Pentax and Zeiss at the corporate level that I'm aware of. The Pentax K bayonet mount has been an open standard (well, effectively open, as Pentax grants it without royalties to anyone who applies to use it) from the beginning. What were seeing is that Zeiss is becoming more of an independent lensmaker, which is a fascinating and encouraging development. It can't help but benefit all of us if only by increasing the options that are open to us.

Mike

jthirsty,
Right. A few years ago there was a rumor that Leica had offered to make its R (SLR) lenses available in Canon EOS mount, and Canon said absolutely not, turned the offer down flat.

Mike

Mike said "Not sure exactly what you're implying, but there's been no arrangement between Pentax and Zeiss at the corporate level that I'm aware of."

A long time ago in a far off galaxy....ahem wrong forum. A while ago Zeiss did have an arrangement with Pentax and provided expertise on lens coatings for the Takamur lenses.

Zeiss have quite categorically stated that they will not reverse engineer the EOS mount, I read this in an article by the English writer Roger Hicks. Up until recently this was on Zeiss' website but I can't find it now I want to link to it.

laurencepak said "but manual focus lenses are only useful is some occations...(for example street photos with preset focus and stepped down and hyper focus)" Blimey I'm glad you told me that, i must go out and buy some AF lenses then.

Interesting from a theoretical standpoint (i.e. if I patent eternal life, I might afford a couple), but what I really want to see is Pentax's limited primes for current Nikon or maybe Olympus. Something like the D40x or E410 (tiny) coupled with either the 31 or 42mm, would be barely bigger than most digicams, with much better output. Digital streetshooter's dream, and a good take anywhere camera.

"Strange. Pentax, Hoya now Zeiss?"

Not sure exactly what you're implying,

.........

I'm not sure either, but Pentax from way back have a great lens design and manufacturing facility. Add the expertise of Hoya with their glass and lens making outfit, - which in the past has included dabbling in making independent lenses, and that only enforces the potential of the ''new'' lens output of Hoya/Pentax. This combination must be the main contender for future Pentax purchases. In my opinion Zeiss will be trying to attract a pretty small market. Thats not to say the Pentax users market is small but that most Pentax users would probably direct their requirements to a Pentax branded lens leaving Zeiss with a pretty small but unique potential market place.

Hmmm...I have some 60 or 70 of those limited-utility manual focusing lenses for various cameras, but good thing I have a digital P&S with an autofocus lens so I can take some pictures.

Hmmm, its not so long ago that Voigtlander (Cosina) brought out a set of quality MF primes in various SLR mounts (including Pentax KA, M42 & Nikon) that have now been discontinued - maybe the "magic" of the Zeiss name will make a difference here despite the big prices?

The 25mm f2.8 would be a really nice "Walk Around" focal length for a DSLR but just look at how big and heavy it is!

Cheers, Robin

Cheers, Robin

These lenses and Pentax in general have received much newsprint in this month's Japanese camera magazines. The 50mm Zeiss is slated to come in at about ¥59,500 - comparable to those Limiteds.

As for the Pentax-Hoya merger one key point of this is nothing to do with cameras, lenses, glass or inovation. It is simply an effort by a major shareholder to get shareholder value out of an underperforming stock and begin a bigger effort with other 'sleepy' companies in other sectors. There is currently in Japan a very slow effort to actually recognize shareholders and elicit some capital gains and dividend value from their stock holdings. Major shareholders (and these are mainly Western based/or stylised fund managers) are beginning to get a little more vocal in their rights and are forcing some of these sleepy corporate executives to actually deliver more to the bottom line - either through merging, divesting or re-organisation. As for Zeiss, they are tied in with Cosina - who are currently a privately owned and family run concern...

FPA: "...what I really want to see is Pentax's limited primes for current Nikon or maybe Olympus. Something like the D40x or E410 (tiny) coupled with either the 31 or 42mm".
Well, the Pentax K100D is not that much bigger than an E410: 0.6 inch deeper, but same width and height. Is 200 gr. heavier, though. But if you really want those primes, you might be able to live with that? ;-)
(Personally, I would choose the K10D despite the size - but thats just me...)

Lars

"laurencepak said "but manual focus lenses are only useful is some occations...(for example street photos with preset focus and stepped down and hyper focus)" Blimey I'm glad you told me that, i must go out and buy some AF lenses then."

Paul Amyes,

what i was trying to say that the only time where manual focus lenses outshines auto lenses is when there is a need to prefocus.

i am not saying you can't take good pictures with manual lens, of course you can.

but in most of the occasions, an auto focus lens saves you the time focusing.

but only in times when you need to prefocus, the design and the practicality of a manual focus lens let you prefocus much easily.

when i said "manual focus lenses are only useful" what i mean is they are relatively more useful.

on most other occasions an autofocus lens is much more efficient.

if one needs a further proof,

here it goes:

if there are two identical lenses, say a 35mm f2 prime,

the whole physical layout is the same

with the same manual focus knob,

but only one has a USM auto focus motor.

if they sell for the same price, which one would you choose?

i am definitely sure everyone will get the auto lens. because an auto lens can be used as a manual focus lens, and with the same focus knob, there is nothing to be gained by getting the manual only lens. so i am arguing for a good autofocus lens with a good manual focus knob.

very good story with usefull lenses information

I have a pentax K10d body and i also have three zeiss 135 2.8 50 1.4 and 28 2.8 from my ald contax. So all i need is a converter,is it possible to be done.

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