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05-11-2016, 11:56 AM   #121
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QuoteOriginally posted by Winder Quote
Yes. I can read. Both of my Sigma lenses fit just fine. No issues with scratches on the mount.
It's not about the mount, it's about the plastic above it.

Edit: Sorry, 'metal above it'


Last edited by FantasticMrFox; 05-11-2016 at 12:05 PM.
05-11-2016, 11:56 AM   #122
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QuoteOriginally posted by awaldram Quote
Rather the supplier you link doesn't stock many Pentax K mount lens !
or your search is very poor - which given your results I think is closer to the truth

You list show 29 from all manufacturers of which many are 645 so not K anyway

try this for a better list
PENTAX K Mount Lenses | SRS Microsystems

42 genuine OeM K mount lens
Sigma Pentax Fit Lenses | SRS Microsystems
20 Sigma K mount lens
Tamron Pentax Fit Lenses | SRS Microsystems
7

To be fair a proper filter on Adorama
http://www.adorama.com/l/Lenses/SLR-Lenses?sel=Lens-Mount_Pentax-K

Shows they stock 122 K mount lens (just a little more than your 29 )
Canon and Nikon have about 450 so many more but how many lens counts as enough ??
Sigma only have 66, Sony 200 and 4/3 22

Again this is what Adorama stock not what is in the retail market.

I think quite rightly Pentax/Ricoh couldn't care less is the largest reverse engineering company has burnt their fingers (again)
Sorry, that link was an advertising link inserted by Pentax Forums. I didn't put in there, and I wasn't trying to make a point about lens availability with it.
05-11-2016, 11:59 AM   #123
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QuoteOriginally posted by FantasticMrFox Quote
It's not about the mount, it's about the plastic above it.
That ain't plastic.

At least it better not be. The buyers are paying for magnesium alloy.


Steve
05-11-2016, 12:03 PM   #124
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QuoteOriginally posted by RonHendriks1966 Quote
See who would be happy then.
Pentax would be.
QuoteOriginally posted by FantasticMrFox Quote
I am pretty sure Pentax needs Sigma more than Sigma needs Pentax.
Why? Pentax doesn't make money when people buy a Sigma lens.
QuoteOriginally posted by FantasticMrFox Quote
Sigma doesn't make a lot of money with Pentax, hence they are not releasing most of their lenses for K-mount.
They won't make any money on K mount if they don't produce any.


Last edited by Parallax; 05-11-2016 at 12:09 PM.
05-11-2016, 12:03 PM   #125
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What a lot of old fuss!!

I have been using Sigma 12-24mm. 24-70mm and 150-500mm on my K-1 and yes, I have the scratch!!

It's horizontal, in the black finish, above the lens mount and underneath the Pentax logo AND IT IS MINUTE, TINY, THIN AND FAINT.

I am not the slightest bit concerned about it.
05-11-2016, 12:07 PM   #126
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QuoteOriginally posted by stevebrot Quote
That ain't plastic.

At least it better not be. The buyers are paying for magnesium alloy.
Good catch

QuoteOriginally posted by Parallax Quote
Pentax would be.Why? Pentax doesn't make money when people buy a Sigma lens.
And some people won't switch if they can't get the Sigma and Tamron lenses they have learnt to appreciate with their Canon/Nikon gear.
05-11-2016, 12:08 PM   #127
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People who buy from a company that uses reverse engineering instead of paying licensing fees, don't have much of a leg to stand on. Pentax didn't earn a cent from that lens. They are under no obligation to support it.
05-11-2016, 12:11 PM   #128
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QuoteOriginally posted by Parallax Quote
Pentax would be.Why? Pentax doesn't make money when people buy a Sigma lens.
In some cases they do. I know a few folks who have considered buying the K-1 because Sigma offers the Art 35/1.4 in Pentax mount. There is not a great Pentax offering in a 35/1.4 and if that is ones main focal length of choice, the availability of the Sigma option most certainly could make Pentax some $$ via the sell of a K-1 (and possibly other Pentax lenses and future bodies down the road thereafter).

05-11-2016, 12:12 PM - 1 Like   #129
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Does Sigma actually make any lenses for K-mount? Seems that they make mostly Canikon lenses and begrudgingly slap a K-mount on a few. Why else would we have to pay the same for a K-mount lens without stabilization as costs a Canikon with it? Sigma has been ringing the death knell for Pentax a long time.
05-11-2016, 12:14 PM - 2 Likes   #130
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QuoteOriginally posted by FantasticMrFox Quote
Sigma are the ones having more pull in this situation. Sigma doesn't make a lot of money with Pentax, hence they are not releasing most of their lenses for K-mount. But the Sigma 'Art' series is universally recognised as probably the best FF prime lens line in existence, and certainly the best bang for the buck. People buy them like sliced bread, and them being not available for Pentax is a drawback.

I am pretty sure Pentax needs Sigma more than Sigma needs Pentax.
I think you need Sigma more than Pentax.
05-11-2016, 12:16 PM   #131
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QuoteOriginally posted by tariq Quote
the availability of the Sigma option mount certainly could make Pentax some $$ via the sell of a K-1 (and possibly other Pentax lenses and future bodies down the road thereafter).
Okay, but how much will they lose due to people buying the Sigma lenses instead of Pentax lenses?
05-11-2016, 12:21 PM   #132
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QuoteOriginally posted by D1N0 Quote
I think you need Sigma more than Pentax.
Makes sense, considering out of my five lenses one is a Sigma and four are Pentax
05-11-2016, 12:23 PM   #133
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QuoteOriginally posted by FantasticMrFox Quote
Makes sense, considering out of my five lenses one is a Sigma and four are Pentax
Maybe you should demand from sigma to remount your Pentax lenses (and of course the sigma) to your brand of choice. See how they react.
05-11-2016, 12:34 PM   #134
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QuoteOriginally posted by Quartermaster James Quote
Does Sigma actually make any lenses for K-mount? Seems that they make mostly Canikon lenses and begrudgingly slap a K-mount on a few. Why else would we have to pay the same for a K-mount lens without stabilization as costs a Canikon with it? Sigma has been ringing the death knell for Pentax a long time. And now, with the advent of the K-1, they are caught with their pants down.
They make a generic lens body adaptable to multiple platforms. So, the short answer is that they make K-mount the same as they make Nikon F and Canon EF. They even provide a mount change service. Example: If you bought a lens in Canon EF that was also available in Pentax K and you later switch from Canon to Pentax, Sigma offers to change the lens over to Pentax K for a fee. That being said, whether they sell a lens in a particular mount depends on economics and cost to manufacture. For example, Sigma has complained that the KAF2 mount requires more care in manufacture due to the aperture control implementation. Nikon presents similar manufacturing challenges, but sales volume makes up for the trouble. K-mount sales volume is a bit less spectacular and less worthy of the resources to make/sell (poor ROI).

Another consideration is projected penetration where a market segment is contested. Up until recently Sigma sold their 70-200/2.8 in K-mount where it was considered to be the upscale and better-performing competition to the Tamron product. Judging from posts on this site, that lens has seen reasonable sales success among Pentaxians willing to spend a bit (quite a bit) more money. About the same time that Pentax confirmed FF camera development as well as a 70-200 lens to complement the camera, Sigma pulled its offering from the market knowing that they would likely see a sales drop of at least 30% with release of the new lens. Will they offer their 70-200/2.8 again? I guess it depends on the strength of the K-mount FF market going forward.


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05-11-2016, 12:34 PM   #135
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QuoteOriginally posted by D1N0 Quote
Maybe you should demand from sigma to remount your Pentax lenses (and of course the sigma) to your brand of choice. See how they react.
Maybe you should react more maturely to criticism of a commercial brand you are not related to?
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