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FA 31mm - anyone bought from Kerso?

simonkit
Posted 30/05/2013 - 18:21 Link
Despite considering a move away from pentax to an alternative full frame model I'm also having thoughts about sticking it out for the Pentax FF and adding to my lens collection instead by going for THE Pentax lens, FA31mm Ltd

I see Kerso on Ebay has them new for £799, anyone bought from him?

http://www.ebay.co.uk/itm/BRAND-NEW-SMC-Pentax-FA-31MM-F-1-8-Limited-Black-SCOTL...

Alternatively anyone have a good used copy at a reasonable price

thanks

Simon
Mike-P
Posted 30/05/2013 - 18:52 Link
Kerso (Ian) is excellent, have bought a couple of Pentax lenses off him in the past (and the K-5 grip), he does a lot of business over on the talkphotography forum (Mainly Canon gear)
simonkit
Posted 30/05/2013 - 19:16 Link
Thanks Mike...it's a very good price, SRS have them @ £1049..just need to check out the warranty situation

Simon
Mike-P
Posted 30/05/2013 - 19:20 Link
his stuff is imported from the states so it's grey. He lives in the USA and it's all shipped to his sister in Scotland who then posts it out.
He covers the warranty himself if the manufacturer refuses to repair any items he sells (and from his feedback on TP he does just that).
Papa_Lazarou
Posted 30/05/2013 - 19:28 Link
Bought a FA31 and FA77 from him this year. Great service and prices - recommended.
simonkit
Posted 30/05/2013 - 19:35 Link
Thanks guys

Thinking a little into the future and the possible arrival of a Pentax FF I have read that lenses designed for film might not perform quite so well on digital, unfortunately as pentax have never had FF digital there's no user data to go on so is it possible this might turn out to be an expensive gamble?

Simon
whatsthisbuttondo
Posted 30/05/2013 - 19:59 Link
Wonder if he could get q adaptor cheaper
gartmore
Posted 31/05/2013 - 07:16 Link
simonkit wrote:
Thanks guys

Thinking a little into the future and the possible arrival of a Pentax FF I have read that lenses designed for film might not perform quite so well on digital, unfortunately as pentax have never had FF digital there's no user data to go on so is it possible this might turn out to be an expensive gamble?

Simon

I think it is almost certain that many film lenses, particularly wide ones will be disappointing. The light will strike the sensor at the wrong angle
Ken
“We must avoid however, snapping away, shooting quickly and without thought, overloading ourselves with unnecessary images that clutter our memory and diminish the clarity of the whole.” - Henri Cartier-Bresson -
Timmy2Knocks
Posted 31/05/2013 - 08:21 Link
I've also brought stuff from Ian. Great communication and service
simonkit
Posted 31/05/2013 - 08:47 Link
gartmore wrote:
simonkit wrote:
Thanks guys

Thinking a little into the future and the possible arrival of a Pentax FF I have read that lenses designed for film might not perform quite so well on digital, unfortunately as pentax have never had FF digital there's no user data to go on so is it possible this might turn out to be an expensive gamble?

Simon

I think it is almost certain that many film lenses, particularly wide ones will be disappointing. The light will strike the sensor at the wrong angle

Yes, that's exactly what I've read...I'm definitely coming to the conclusion that a move away from Pentax when I eventually go with FF makes sense, at least there's plenty of user experiences out there for other marques. It seems as though buying Pentax legacy glass to use on any new FF could be a bit of a guessing game

Simon
johnriley
Posted 31/05/2013 - 09:31 Link
Digitally-designed lenses have a telecentric design. This means that light rays are parallel when they exit the rear element. The light thus falls squarely into the pits on the sensor surface that hold the individual pixels.

Some film designed lenses will work very well, especially from short telephoto onwards. Some won't, especially the wider angles.

The Pentax experience is already there and indicated very well by their approach to the 645D. By and large the existing 645 lenses have been kept, but the wide angle and macro have received new updated designs. I would expect that any "FF" Pentax system would do the same. Pentax are not going to release a system camera without any lenses to use with it.

There's nothing to fear about this and I will just wait and see what actually happens before making any decisions. The only thing I can say at the moment is that I am very unlikely to want to move to a FF system of any kind.

PS This all presumes that the sensor used in a Pentax FF camera still had pits in its surface. It's always possible that new sensor designs could render telecentric design requirements as obsolete.
Best regards, John
Edited by johnriley: 31/05/2013 - 09:33
Mike-P
Posted 31/05/2013 - 10:03 Link
Any full frame camera Pentax release will need to have a crop mode enabling the use of the current DA lens line-up. May not be ideal but at least it would allow the release of such a camera without having to re-engineer loads of lenses from the outset.

It would certainly be the sensible way to go about things ... but then this is Pentax we are talking about and they seem to have their own interpretation of the word.

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