Sigma Lens Compatibility Issues With K-1

Sigma has announced that some of its lenses have compatibility issues with the Pentax K-1.

12/05/2016 - 12:03

Pentax K 1 In Hand (6)

Sigma has announced a product advisory because select Sigma lenses when connected to the Pentax K-1 inflict a minor scratch to the camera body. 

The following lenses are affected: 


As well as this issue, it's also come to light that the K-1 might not be able to determine the correct image circle of Sigma lenses when the crop mode is set to 'auto'. Because of this Sigma recommend manual configuration of the crop setting. A firmware update for the lenses this affects should be able to fix the issue. 

Sigma say that they are planning to provide a repair service for the issue and more information will be available on the Sigma website when specific details are finalised. 


Related Photos
No related photos found. Check out the Pentax User Gallery.

cvhennessy

Link Posted 14/05/2016 - 12:29
I wonder whether Ricoh will offer a repair to the K1 exterior. I've got the Sigma 35mm Art and I've checked my camera exterior. It's slightly more than a mark, it's actually a grove in the area underneath the prism. Waiting for a fix from sigma before I use the lens again but was wondering whether continued use would effect the weather proofing? Since its a current lens I wonder whether Ricoh should have been more thorough in their design process

cabstar

Link Posted 15/05/2016 - 00:56
Why should Ricoh care whether some third party manufactures products has a compatibility issue, thats the chance you take wit third party lenses and accessories.
PPG Wedding photography Flickr
Concert photography

Currently on a Pentax hiatus until an FF Pentax is released

cvhennessy

Link Posted 15/05/2016 - 20:14
Because its a currently available lens so they should have looked at it and they won't sell very many cameras if there aren't any third party products available for them. Nikon and Canon don't go out of their way to try and be obstructive to other suppliers. It really depends on whether you want Pentax to survive or wither and die. If they can't be bothered to do their research for something as straightforward as this it makes you wonder what other short cuts have been made. This is what other camera buyers will think. Do you buy a camera that supports the Sigma Art range or one that charges a large markup on Tamron lenses?

RobL

Link Posted 17/05/2016 - 21:01
Not had an update yet from Sigma about modifying owner's lenses. Referring to comment above, why let the tail wag the dog? Sigma are phasing out K-mount lenses so why should Pentax adapt to their oversized version of the mount? I suspect the tight body shape is to accommodate the clever pivot/slide mirror mechanism which reduces the depth needed for it to flap up, and is the reason why the body is less bulky than NikonCanon. So far no problems with other lens ranges.

And it is a common fallacy that Pentax are just badged Tamrons. Tamron assemble Pentax lenses using Pentax glass and specific tolerances, plus weather sealing.

The more I learn about the K-1 the more I realise it is engineering brilliance, the example I gave of the mirror mechanism is just one of many highly developed concepts, and I for one am getting a bit tired of the petty unconstructive and uninformed brand bashing which occasionally gets aired here.

theonenadeem

Link Posted 24/05/2016 - 01:30
RobL wrote:
Not had an update yet from Sigma about modifying owner's lenses. Referring to comment above, why let the tail wag the dog? Sigma are phasing out K-mount lenses so why should Pentax adapt to their oversized version of the mount? I suspect the tight body shape is to accommodate the clever pivot/slide mirror mechanism which reduces the depth needed for it to flap up, and is the reason why the body is less bulky than NikonCanon. So far no problems with other lens ranges.

And it is a common fallacy that Pentax are just badged Tamrons. Tamron assemble Pentax lenses using Pentax glass and specific tolerances, plus weather sealing.

The more I learn about the K-1 the more I realise it is engineering brilliance, the example I gave of the mirror mechanism is just one of many highly developed concepts, and I for one am getting a bit tired of the petty unconstructive and uninformed brand bashing which occasionally gets aired here.

theonenadeem

Link Posted 24/05/2016 - 01:30
Plus. 1.
RobL wrote:
Not had an update yet from Sigma about modifying owner's lenses. Referring to comment above, why let the tail wag the dog? Sigma are phasing out K-mount lenses so why should Pentax adapt to their oversized version of the mount? I suspect the tight body shape is to accommodate the clever pivot/slide mirror mechanism which reduces the depth needed for it to flap up, and is the reason why the body is less bulky than NikonCanon. So far no problems with other lens ranges.

And it is a common fallacy that Pentax are just badged Tamrons. Tamron assemble Pentax lenses using Pentax glass and specific tolerances, plus weather sealing.

The more I learn about the K-1 the more I realise it is engineering brilliance, the example I gave of the mirror mechanism is just one of many highly developed concepts, and I for one am getting a bit tired of the petty unconstructive and uninformed brand bashing which occasionally gets aired here.

ngkmh

Link Posted 25/05/2016 - 11:48
RobL wrote:
Not had an update yet from Sigma about modifying owner's lenses. Referring to comment above, why let the tail wag the dog? Sigma are phasing out K-mount lenses so why should Pentax adapt to their oversized version of the mount? I suspect the tight body shape is to accommodate the clever pivot/slide mirror mechanism which reduces the depth needed for it to flap up, and is the reason why the body is less bulky than NikonCanon. So far no problems with other lens ranges.

And it is a common fallacy that Pentax are just badged Tamrons. Tamron assemble Pentax lenses using Pentax glass and specific tolerances, plus weather sealing.

The more I learn about the K-1 the more I realise it is engineering brilliance, the example I gave of the mirror mechanism is just one of many highly developed concepts, and I for one am getting a bit tired of the petty unconstructive and uninformed brand bashing which occasionally gets aired here.

I would have been nice if Sigma had a heads up on the potential issue so they could get an advisory out before cameras were damaged from use. Although Sigma do not fully support Pentax with their full range, I do appreciate the choice provided with Sigma alternatives. They support Pentax more than Tamron or Tokina although ironically, it seems Pentax lens are copies of Tamron / Tokina designs.

senn

Link Posted 14/06/2016 - 22:03
I think no one will contest “K-1 is an engineering brilliance”; .. as were in their turn K-3 and K-5 series; .. But does this have something to do with the very subject ? Hard to believe there could be any tradeoff between K-1’s “engineering brilliance” and its compatibility with K-mount Sigma lenses.

Pentax has still a quite limited lens line. This fact is regularly mentioned in “cons” of Pentax body tests. When I decided to get on bird photographing the only Pentax "dedicated" marketed lens was 300 DA*. I bought it. Great telephoto lens but without really long reach. Then one year later I’ve owned Sigma 500 f4.5. Great lens too, which (ironically) made me stick with Pentax for a while. Sigma has a pretty long lens line with almost every known focal length, including several great stuffs as 500 f4.5. But few of them support Pentax. And as it’s well known, this is out of Sigma’s will. IMHO, for to be really competitive in his market segment, Ricoh better not bother third parties and also make sure new Pentax bodies won’t bother third parties K-mount lens owners.
senn
my flickr gallery
Add a Comment
You must be registered or logged-in to comment.