Forgot Password
Pentax Camera Forums Home

Third-Party Pentax Lenses - Reviews and Database » Sigma Lenses » Legacy Zoom Lenses
Sigma -y II 21-35mm f3.5-4.2 Review RSS Feed

Sigma -y II 21-35mm f3.5-4.2

Reviews Views Date of last review
3 11,332 Sun August 2, 2020
Recommended By Average Price Average User Rating
100% of reviewers $76.00 9.00
Sigma -y II 21-35mm f3.5-4.2

This is the later, one touch version of sigma's "gamma" superwide zoom, introduced in 1986. Available as MF and AF. Pic shows a Nikon mount MF version.
Specs: sigma museum page here.

Review by OMexperience.
Mount Type: Pentax KA
Price History:

Add Review of Sigma -y II 21-35mm f3.5-4.2
Sort Reviews by: Date | Author | Rating | Recommendation | Likes (Descending) Showing Reviews 1-3 of 3
New Member

Registered: January, 2016
Posts: 18
Lens Review Date: August 2, 2020 I can recommend this lens: Yes | Price: $72.00 | Rating: 8 

Pros: Made very plastic.Takes great photos.
Cons: Can only use manual focus
Sharpness: 10    Aberrations: 8    Bokeh: 9    Handling: 8    Value: 10    Camera Used: K 50    Autofocus: 5    New Or Used: Used   

Found this lens on shop goodwill site, thought it might be a good one to try.So I bought it..

.In my hands & on the camera it felt really solid, well built lens with a permanent small tulip lens hood.Which is a plus... something you don't have to worry about losing.

1st time I tried taking photos with AF but the shutter wouldn't fire, but when I switched to manual mode,the lens works just fine.It's okay it's because it's a totally manual lens.Which isn't that bad once you figure how to focus while shooting.

I'll get used to it, along with my Promaster19-35mm lens & my latest purchase a Sigma DC 17-50mm f/2.8 HSM EX Lens For PENTAX
Senior Member

Registered: January, 2016
Posts: 106

2 users found this helpful
Lens Review Date: November 19, 2018 I can recommend this lens: Yes | Price: None indicated | Rating: 10 

Pros: Sharp, 77mm Filter
Cons: Zoom Creep, Close Focus Distance
Sharpness: 10    Aberrations: 9    Bokeh: 8    Handling: 9    Value: 10    Camera Used: K-70    Autofocus: 10    New Or Used: New   

I really don't like the rating system so I'm going to break it down like this...

Sharpness: 10, based on compared to older zooms of it's generation. This thing holds it's own against most zooms of even today. Not all, but most. It's pretty sharp stopped down. It's not that sharp wide open, but quickly sharpens up. I've shot it against a Rokinon 14mm 2.8 and they are very comparable, which is pretty amazing.

Aberrations I haven't noticed much at all. Though under the right circumstances it's probably there. I would need to shoot a lot more to determine this, but nothing noticeable under regular shooting so far.

Bokeh I really like the bokeh this lens produces, but it's hard to rate it high because at wide open you don't get the sharpest image. This might be good for portraits where tack sharp isn't desired. Focusing distance also isn't that close.

Handling: I'd have to say a solid 9, feels good in the hands, but I am not very particular with these sorts of things. One issue my copy has is lens creep. It's not an issue so long as the lens is not facing directly 90 degrees up. You'd have to use a rubberband around it for shots like that.

Overall value I give it a 10. This lens is a step up from the older generation and has the same optics as the AF version which IIRC is not available for Pentax.

This lens is SUPER rare for K mount. It is unlikely that you'll come across one.

It's hard to put an actual value on this lens. There are very few options for a FF lens in this focal range that are sharp stopped down without being very costly. While the older versions can be had for around $160 on ebay they do not have the same optics as this one, which shares the same optics as far as I know, with the AF version, which is a well regarded lens. It's also nearly impossible to find. I have only ever heard of one other person owning a K-mount, and for all I know, this could be that same lens.

For the Landscape Photographer this is an excellent lens stopped down, with an excellent focal range.

See pictures here compared to a Rokinon 14mm 2.8

(Note this does not have AF but I rated it 10 because it didn't give me a choice to not rate it after clicking it)
Site Supporter

Registered: December, 2014
Location: Colorado
Posts: 470

1 user found this helpful
Lens Review Date: October 28, 2018 I can recommend this lens: Yes | Price: $80.00 | Rating: 9 

Pros: Sharp
Cons: Long close focus distance
Sharpness: 9    Aberrations: 8    Bokeh: 8    Handling: 7    Value: 10    Camera Used: Sony A7    New Or Used: Used   

This lens is hard to find in PK mount. Mine is in Nikon mount, installed to a Sony A7 through an adapter.

Lens has a limited but useful range. My test shows that it is very sharp especially in the center. Color is a bit muted however it may be due to A7's choice of rendering than the lens itself.
Add Review of Sigma -y II 21-35mm f3.5-4.2

All times are GMT -7. The time now is 03:39 PM. | See also:, part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]