All Forum Comments
Comment by johnriley posted on Pentax-M 28mm f3.5 SMC at 07/08/2011 - 10:42
We have this every time a new profduct comes out - the initial price is high and then it falls and stabilises.
AS regards the viewfinder, I don't know what it is yet, optical or EVF, but an Olympus virewfinder has stabilised out at £199, not too far adrift from £240 RRP.
The GPS unit at £209 is a similar price to the Nikon one at £199.
Like it or not, we're talking about high class engineering and the cost is going to be high.
Comment by johnriley posted on The Pentax Q is Imminent at 07/08/2011 - 09:56
Comment by johnriley posted on Asahi Pentax Takumar 2x KA Teleconverter at 07/08/2011 - 00:24
I think people will like the Q, those who don't won't buy. Not a problem. As soon as the price begins to fall, as is always the case with new cameras, then I will be waiting for the moment to jump in and buy.
I suspect the Q will hit the spot, but we'll find out for sure quite soon.
Comment by johnriley posted on The Pentax Q is Imminent at 07/08/2011 - 00:20
Only buy the K-5 if you need weather resistance or the higher pixel count or the better low light performance. Bear in mind you may not have any WR lenses though.
Comment by johnriley posted on Do I meed a K5 ? at 06/08/2011 - 13:58
Comment by johnriley posted on 50mm SMC A 1.7 + 28mm Miranda 2.8 at 05/08/2011 - 22:44
Comment by johnriley posted on If you like Pentax, should you only buy Pentax at 05/08/2011 - 22:38
Comment by johnriley posted on From my mum's garden at 05/08/2011 - 20:20
Comment by johnriley posted on 24.3 MP Exmor CMOS sensor at 05/08/2011 - 18:34
Small format sensors may have surpassed the limit, this is, in most cases they are lens-limited in terms of resolution.
As regards the print, I'm happy to accept a figure of around 4 lp/mm for a 16"x12" print, the same as quoted by Roger Hicks in "The Lens Book", but it's an approximation of course. It explains rather well though why the A3 print is about the optimum for quality prints, when viewed at the right distance of course.
The article Stefan links to is very interesting and well worth a read.
Comment by johnriley posted on 24.3 MP Exmor CMOS sensor at 05/08/2011 - 18:20


Wide angle lens design used to mean large front elements, for exactly the reason stated in the auction. Early Pentax wide aperture wide angles would be the same. However, lens design moved on from this in the early 1970s and certainly the Prinzflex name (Dixons own-brand) will not excite those who recognise it.
As regards the 135mm f3.5 there are several versions of this and the 5 element versions may well out perform the four element f2.8 and f2.5 versions.