Originally posted by beholder3 Cheap is the only positive here though.
They are
plastic build (poor). They are substantially
larger (poor). They suffer from even
more purple fringing and CA than the old 77 or the old Sigma 85/1.4. The 85/1.8s are real purple monsters.
Canon EF 85mm f/1.8 USM Lens Image Quality
Basically they represent DA 50/1.8 with less image quality and longer focal length.
Since the vast majority here doesn't want this type of cheap lenses but premium ones and a 85/1.4 is in the pipeline I don't think Pentax will consider a cheapo 85 in the next 10 years. And quite rightfully so.
I don't think that Pentax will release in the first place an 85mm f1.8 afordable lens. And I do think that an 85mm f1.4 lens will be more apealing to portrait photographers who want top quality when comes to performance and build quality. The new Canon 85mm f1.4L lens is sold a lot acording to the salesmans from our local photo stores.
The main differences between FA77mm (which I owned and sold because DA70mm was faster to focus, lighter, half the price and had less CA than the FA77mm) and the Canon 85mm f1.8 are:
- build construction; Pentax is much better build
- dimensions and weight (Canon weights 425g while FA 77mm weights 270g)
- different rendering, better in this regard than Canon lens, at least in some circumstances
On the other hand, Canon 85mm f1.8:
- costs half the price of FA 77mm (396$ at B&H while FA77mm costs 797$)
- it's noticeably faster to focus
- it's sharper than the F77 from f1.8 to f2.8
If I have to choose which version of the 85mm I would like to see first from Pentax (the f1.8 version or the f1.4 version), then an 85mm f1.4 lens would be my choice without hesitations. But this mean that you can't do the job quite well with a cheap 85mm f1.8 if Ricoh decide to release such a model first? I'm pretty happy with the performance of the 85mm f1.8 which cost me 270$ new (Canon cashback offer) and I have to rent the new released 85mm f1.4L lens to see if I'm going to buy it or stay with the cheap 85mm lens and when the space gives me options, to put the 135mm f2L lens on the body.
The image with the viking male it's a crop from larger image of him and it was taken at f2.2. I think it's good enough for someone who wants to go out and shoot rather than stay in front of the computer and searching for graphs or pixel peeping images from flicker.
It's very good also in the studio, at corporate portraits. It may not be good if you go out in the rain to take portraits.