Pete,
I appreciate the alternative suggestions that have been made.

If I spend £500 on a new body - I will still have a faulty 50mm - and be out by £500.

If I send the two bodies to pentax - even with the lens - I will have two bodies that work with the 50mm, but that front focus with all the other lenses. [Unless it was indeed possible to update the focussing system as Norris suggested (alike the K20) and have a special setting for the one single lens. ] [ btw pentax do not confirm they are able to do these modifications - nor specify the eventual price]

Because the lens seems to function perfectly, and only has an issue with front focusing, I am not sure if it can be considered 'faulty' - and I am asking for advice on wether it is possible to solve the issue without buying another lens, another camera, or a tripod.

Cheers,

ahhh a split screen!!!

now its all more clear!

I wished I knew what the hell you are talking about!!!!!

Enlighten me?

Ok,
Maybe my english doesn't allow me to explain myself well enough for you all to understand.

The two K10d I own are absolutely fine with the sequent lenses

100m Macro f2.8
31mm ltd
DA 16-50
DA 10-17
Tamron 18-250
da 18-55

The ONLY LENS that is giving me problems is the FA 50mm f1.4 - which gives me about 4-6 mm of front focus.

I therefore don't need to buy another camera, nor change the focus adjustment on any body, nor send it to pentax to adjust anything.

I need to know if the lens is faulty, and if it can be repaired or the issue resolved. I would be interested in DIY solutions - or perhaps somebody here as had previous experiences similar to mine.

THank you all,

Critical is very very close!

The time has to be longer... but the concept is completely correct.

Matt,

"We" are biased because we have the right to be biased.

Your example is NOT a normal example of customer care, it is an EXTRAORDINARY example where YOU have made the wrong choice, and the shop was KIND enough to apply the law in the minimum possible time, refunding you, over a CARD payment that could take up to 7 days only to process.

I am glad you don't realize how stupid is your choice of purchasing a camera off of ebay, and not through a VERY TRUSTED seller like SRS.

The forum is friendly enough, and the advice given is most of the times of the best kind.

The advice is:

1 try before you buy
2 don't rush to conclusions
3 understand that you get what you pay for, and a shop like SRS is thankfully very busy these days, and it is because they've made sure to have very happy customers.
4 If you find yourself a better service in another forum, and at jessops, good luck, and you'll need lots of it.

Regards,

Dear Norris,
THank you very much for your reply.

Just to let you know, I am not exactly a beginner, your advice is very precious, but unfortunately I was already acknowledged about the issues you mentioned.

I have tested under normal light conditions, with natural light and a good illumination.
I have also tested various lenses, including a 100mm Macro with much shallower DOF than the 50mm.


So, having established that it is the Lens's problem and it IS an issue of front focussing, the question remains.

Any advice on how to solve this?

Thank you anyway!

You can turn on all the switches, or one of them. but you can only open the door of the dark room once.

Hello Everybody!

I was trying to establish what is the focusing situation of my gear; I prepared the whole focussing chart and started testing the various lenses and 2 K10 bodies.

Whilst almost all the lenses are doing well, and have an average Front Focus of 2mm +/-, I have a big issue with the FA 50mm f1.4

Both cameras show the exact same patterns with all the lenses tested, and i am more than happy to NOT correct the focus adjustment on the cameras (through the firmware, bla bla..) because most lenses are actually fine. (And a 1-2 mm FF is not a big deal.)
On the other hand the 50mm shows very hard front focus, of 4-6 mm on both cameras, up to f8. On f1.4 this is very evident, and the ff makes the lens very hard to use properly.

I called pentax and asked for their advice; they suggested bringing the lens to them, and having it cleaned. This IMO wouldn't change anything and a simple cleaning process will not change the focusing characteristics of the lens.

Does anybody have any idea on what I can do? Are there adjustments that i can do on my own? do you reckon a lens cleaning can change things?

Looking forward to your help,

Nathan

What, I can't be sarcastic now?

Roscoe, nothing ever offends me, I was only joking.

The riddle is real, and it has a very intuitive answer. Much more intuitive than the OP acronym and puzzling sentence!!!


Nathan