UK! K5 price second hand

Mac McCreery

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Hi all

Does £270 seem a fair price for a K5 with a shutter count of 67,000?

Cheers

Mac
 
Seems about right Pal
 
That is a very high shutter count, I'm sure you could do a lot better if you look around!

Think of shutter count as miles on a car.
 
Remember you can still get a brand new ( old stock ) K5 with full warranty from one of the UK's leading Pentax dealers for not a great deal more .
--
With kind regards

Derek.
 
Mac McCreery wrote:

Hi all

Does £270 seem a fair price for a K5 with a shutter count of 67,000?
Mac, price is fair enough and with a 100K expected life of the shutter there's lots of mileage left on it. I picked up a K-30 the other day for my daughter from SRS who have some interesting stuff which they sell through fleebay now and then. Typically store-used demo's with a 12-month guarantee.

If you are a proliferous shooter, you might indeed want a body with something more like 20K on the counter.

But you could do worse than 270 quid for a K-5!
 
Mac McCreery wrote:

Hi all

Does £270 seem a fair price for a K5 with a shutter count of 67,000?
Mac, price is fair enough and with a 100K expected life of the shutter there's lots of mileage left on it. I picked up a K-30 the other day for my daughter from SRS who have some interesting stuff which they sell through fleebay now and then. Typically store-used demo's with a 12-month guarantee.

If you are a proliferous shooter, you might indeed want a body with something more like 20K on the counter.

But you could do worse than 270 quid for a K-5!
 
Pontoneer wrote:
Mac McCreery wrote:

Hi all

Does £270 seem a fair price for a K5 with a shutter count of 67,000?
Mac, price is fair enough and with a 100K expected life of the shutter there's lots of mileage left on it. I picked up a K-30 the other day for my daughter from SRS who have some interesting stuff which they sell through fleebay now and then. Typically store-used demo's with a 12-month guarantee.

If you are a proliferous shooter, you might indeed want a body with something more like 20K on the counter.

But you could do worse than 270 quid for a K-5!
 
For fun, let's calculate the number of teeth in the horse's mouth (smile)...

A couple of assumptions about the horse: shutter failure follows a normal (Gaussian) distribution; manufacturers advertise their "shutter life" as the point when they expect no more than 1% failures; and a shutter with no actuations is a "six sigma" unit.

A 1% failure rate corresponds to -2.3 sigma, approximately, on the normal curve, and we assume this corresponds to the 100k activation life advertised by Pentax. To anchor our calculations, we assume a 1 activation life corresponds to -6 sigma, that is, the probability of failure on the first activation is around one in a billion. This tells us that sigma is approximately 27k activations, and thus the MTBF is around 162k activations at which point the probability of failure is 50%.

A unit with around 67k activations therefore sits at around -3.5 sigma, and so has a probability of failure of around 0.1% under the normal curve... One in one thousand... Nowhere near the one in a billion when new, but not bad odd odds! Good luck!

--
Lester
 
Last edited:
Pontoneer wrote:
Mac McCreery wrote:

Hi all

Does £270 seem a fair price for a K5 with a shutter count of 67,000?
Mac, price is fair enough and with a 100K expected life of the shutter there's lots of mileage left on it. I picked up a K-30 the other day for my daughter from SRS who have some interesting stuff which they sell through fleebay now and then. Typically store-used demo's with a 12-month guarantee.

If you are a proliferous shooter, you might indeed want a body with something more like 20K on the counter.

But you could do worse than 270 quid for a K-5!
 
Hi all

Thank you for your informed answers! I am working on my shot rate. My Kr has taken 7800 in just under two years. I am still stuck with a film mindset that say "get it right first time" rather than blasting subjects.

Even 20k on the shutter would last me a long time!

Even better, the seller is meeting with me so that I can try out the camera in a shoot.

Many thanks.

Mac
 
Pontoneer wrote:
Pontoneer wrote:
Mac McCreery wrote:

Hi all

Does £270 seem a fair price for a K5 with a shutter count of 67,000?
Mac, price is fair enough and with a 100K expected life of the shutter there's lots of mileage left on it. I picked up a K-30 the other day for my daughter from SRS who have some interesting stuff which they sell through fleebay now and then. Typically store-used demo's with a 12-month guarantee.

If you are a proliferous shooter, you might indeed want a body with something more like 20K on the counter.

But you could do worse than 270 quid for a K-5!
 

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