If you have something like the MZ-7, it can be used with newer DA lenses that lack an aperture ring, although as mentioned, most will vignette.
Lenses like the DA40, DA*55 and DA70 work well on 35mm sized cameras aparently. Of course you have the current FA Limited (31mm, 43mm and 77mm) that are designed for 35mm cameras.

I picked up a K55 f1.8 for around £40 last month and its a great portrait lens, it has really nice bokeh, not the razor sharp wide open that I get with my K85 f1.8 but still pretty good for such a cheap lens.
Brilliant build quality too from the K-Series.

K55:
https://www.flickr.com/photos/hoopsontoast/15633264905/
https://www.flickr.com/photos/hoopsontoast/15013171093/
https://www.flickr.com/photos/hoopsontoast/15447158528/

The K85:
https://www.flickr.com/photos/hoopsontoast/15202834436/
https://www.flickr.com/photos/hoopsontoast/15093907405/
https://www.flickr.com/photos/hoopsontoast/14936710865/

Still here.

Lovely copy! I'm on my second, its great on film/FF
Catch them while you can....

I would only really take £40 inc delivery, mint ones go between £80-£100 on ebay.

I have tested it on my K-01 and MZ-5N (although not shot any photos on film).

Only photo I have with the 28-200mm and @200mm (even if the exif says smc PENTAX-F 35-105mm F4-5.6, no idea why)



Super-Moon by RSdesignUK, on Flickr

Hi,
Yes it is.
Cheers, Rob

But then I have found the best for shallow DOF is to use MF older lenses anyway.

The Pentax advantage is its small primes. There is no reason why they could not have a standard range of small, light and sharp primes with a few select fast/larger equivalents for the people that want them.

I guess..... f2.8 on APS-C is sort of equivalent as f4 on FF anyway when it comes to DOF........

There is the potential for the lenses to be lighter/smaller or at least you would not need as fast lenses if the high ISO performance is better.

This is somewhere where Pentax, I feel could create a USP in the FF market with their range of existing relatively compact/light FA Limited Primes in the 31mm, 43mm and 77mm. Along with potentially a proper FF version of the 40mm & 70mm in the DA Limiteds. The FA 28mm, 35mm and 50mm f1.4 are also all quite compact too.
Thats only missing an UWA Prime (FA20) or Zoom (FA20-35) re work and a standard 24-70mm zoom.

My FA20-35 is an example of this, about the same size, if not smaller than my DA14 and a lot lighter too. There of course is the DA15 which is a little lighter and about 2/3rds the size of the FA20-35 though.
Of course its not as fast but I dont really use the f2.8 aperture apart from very low light or I want some background isolation from a subject.

A FF (135 sized Sensor) sits roughly halfway inbetween an APS-C and the 645D/Z Sized Sensor.
Of course, the sensor in a FF camera is likely to be a lot cheaper than the 645 sensor.
That would be the advantage, to bridge the gap between the ~£1k K3 and the ~£7k 645Z.