my car has done 60,000 miles

lostinfrance

lostinfrance

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As a engineer i have decided to open a can of worms.
My car has done 60,000 miles in 5 years,how long has the engine run(dont know). Cameras DSLR run for say 150,000 clicks,how long does a camera run at say a average shutter speed of 1/125 sec in its lifetime,makes you think how well there made,a jet engine can run for a million miles before a service

just a thought
 
I saw a Volvo P1800 on the net that had done 2,600,000 miles. Is there a record for shutter counts in the dslr world? I've heard of some very high mileage 1D's
 
thought you may to know...my Nikon D2x is currently on its original shutter unit and at its present shutter count is........452,639 clicks........and my D3x which we got last august has currently done over 12,000...
 
WCG 519 said:
thought you may to know...my Nikon D2x is currently on its original shutter unit and at its present shutter count is........452,639 clicks........and my D3x which we got last august has currently done over 12,000...
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:eek:
 
Just to bore you more a jet engine revs between 80,000 and 120,000 RPM,ten times faster than a Ferrari Enzo and a lot faster than a Nikon D3x LOL
 
lostinfrance said:
As a engineer i have decided to open a can of worms.
My car has done 60,000 miles in 5 years,how long has the engine run(dont know). Cameras DSLR run for say 150,000 clicks,how long does a camera run at say a average shutter speed of 1/125 sec in its lifetime,makes you think how well there made,a jet engine can run for a million miles before a service

just a thought
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But there are different levels of precision in the manufacture, different materials, different useage patterns etc. There is no comparison at all. The shutter on my Sony can open and close in 1/8000 of a second. The Hillman Imp engine in my Davrian does 9000rpm (well a bit more, but the maths are easier), which means it rotates in 1/150 of a second. However it has a lot more mass to move, but there is far less rotational acceleration of the crankshaft (lots of acceleration of the pistons, but they are just lumps of metal). I need to change the oil in it every 100 miles or so (because I use Castrol R which does not last long and because it is only driven in "absolutely thrashing it" mode which destroys any oil very quickly), the shutter in my camera requires no servicing at all.

Apples and oranges, basically.
 
onomatopoeia said:
But there are different levels of precision in the manufacture, different materials, different useage patterns etc. There is no comparison at all. The shutter on my Sony can open and close in 1/8000 of a second. The Hillman Imp engine in my Davrian does 9000rpm (well a bit more, but the maths are easier), which means it rotates in 1/150 of a second. However it has a lot more mass to move, but there is far less rotational acceleration of the crankshaft (lots of acceleration of the pistons, but they are just lumps of metal). I need to change the oil in it every 100 miles or so (because I use Castrol R which does not last long and because it is only driven in "absolutely thrashing it" mode which destroys any oil very quickly), the shutter in my camera requires no servicing at all.

Apples and oranges, basically.
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Bang went this conversation :) lol

:clap: good explanation
 
to sum it up ,in a lifetime i bet your camera,film or digital does not run for more than few hours
 
Am I the only one completely confused as to what the origional question is?

Is the question about how well made cameras are compared to other machines?

Thats an impossible thing to even begin to compare... if you compare it against car engines (not sure why) but what engine would you choose? The small 1.0 engines are far less reliable than say a 4.0 v8, and generally by the time the life of the 1.0 is up the v8 is just running in.

I am very sceptical about the claim that jet engines can do rediculously high miles without being serviced. Parts fail, those parts would have to be checked regulalry and changed when needed (life span)

Just as a car has to have a new cambelt every xk miles, the camera has to have a service and possible new shutter...
 
yes but it clonks like anything! Clonk mirror up, clonk 1st curtain opens clonk second shutter closes, clonk mirror falls, As the OP is an engineer he will appreciate this is not a nice form of motion compared to a well balanced jet engine running smoothly......its the number of cycles, and the shutter speed is of no relevance, you get all 4 clunks whether its 1/125th or an hour! (ok above 1/250th or there abouts the two curtains combine into one clunk)
 
but how many people service there cameras,with the cost of a midrange dslr and the times thay are upgraded i would rather get a new one than pay for the cost of a service.the olympus trip was in production for 15 years and still a very desirable bit of kit,see tripman website
This was just a topic to open a can of worms , indeed it did LOL
 
lostinfrance said:
but how many people service there cameras,with the cost of a midrange dslr and the times thay are upgraded i would rather get a new one than pay for the cost of a service.the olympus trip was in production for 15 years and still a very desirable bit of kit,see tripman website
This was just a topic to open a can of worms , indeed it did LOL
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but then your talking cost.
so you would have to compare a car in relation to that cost...
you can get a second hand subaru sti for about £2000 in good condition now.
You can get a toyota aristo 3.0 twin turbo for around £2000

The cost fo the cambelt on both of these cars is high... on top of that you have the cost of brakes, services, and mechanical failure, and the cost of turbos is not cheap!

Id say the camera is quite a cheap object to service and maintain in relation to a car.

In fact a car far outweighs the original purchase cost with servicing, insurance, tax, petrol and so on...
You buy a new car for £15,000 then add the cost of tax, insurance, fuel, servicing, repairs over the next 5 years.

compare that to spending 3-4k on a dslr and what the cost of running one of those is with the odd service.

by the time a camera shutter dies though i should think the camera would be worth very little and you would probably be upgrading anyway ;)
 
Is it normally the shutter mechanism that gives up, or the mirror moving up and down?
 
it makes you wonder why so many people moan about shutter actuations... people get snotty at anything that has had 20-30k plus, but thats only 15%-30% of the useage the manufacturer believes you will get out of it. Average life expectancy in the UK is close to 80years, so i've lived about 32.5% of what my life expectancy, maybe I should consider myself to be of no use too?

I bought a 2nd hand 5D MKII which has done 44k, which is less than 1/3 of its expected shutter life and IF I ever hit 100k+ and it falls apart, for a relatively reasonable repair cost, I could give it a new lease of life and get another 100k out of it.

Just my 2 cents..
 
hsuffyan said:
it makes you wonder why so many people moan about shutter actuations... people get snotty at anything that has had 20-30k plus, but thats only 15%-30% of the useage the manufacturer believes you will get out of it. Average life expectancy in the UK is close to 80years, so i've lived about 32.5% of what my life expectancy, maybe I should consider myself to be of no use too?

I bought a 2nd hand 5D MKII which has done 44k, which is less than 1/3 of its expected shutter life and IF I ever hit 100k+ and it falls apart, for a relatively reasonable repair cost, I could give it a new lease of life and get another 100k out of it.

Just my 2 cents..
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:clap: spot on :clap:
 
if you bought a dishwasher and only lasted 20 minits you would be peeved,a swiss clockwork watch will last many years so how much engineering goes into a camera that will run maybe 20 minuits in a few years.the manufactures want you to change ever couple of years ,i have a nikon fm2n bought 19 years ago,still as sweet as ever.the manufactures drip feed us so we will upgrade to new cameras(not just cameras) every year or two when there is nothing wrong with the gear we have(a bigger number is always better-not) after all we are taking photographs arnt we,thats the whole point of this wonderfull hobby or have people lost sight of this
 
lostinfrance said:
if you bought a dishwasher and only lasted 20 minits you would be peeved,a swiss clockwork watch will last many years so how much engineering goes into a camera that will run maybe 20 minuits in a few years.the manufactures want you to change ever couple of years ,i have a nikon fm2n bought 19 years ago,still as sweet as ever.the manufactures drip feed us so we will upgrade to new cameras(not just cameras) every year or two when there is nothing wrong with the gear we have(a bigger number is always better-not) after all we are taking photographs arnt we,thats the whole point of this wonderfull hobby or have people lost sight of this
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agreed, and theres a darn sight less variables in a camera that can fall apart than a car engine, dishwasher, computer etc...
 
trencheel303 said:
Lol? It has many more than just one moving part I am sure....
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Nope. Whilst there may be small motors and so forth in the ancilliaries, the basic design of a jet engine has but a single moving part. It's brilliant in its simplicity :)
 
lostinfrance said:
if you bought a dishwasher and only lasted 20 minits you would be peeved
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Analogies are rubbish in internet arguments, as is comparing a dishwasher to the shutter mechanism in a DSLR.

To carry your analogy to its logical conclusion, if the dishwasher cleaned a load of dishes in 1/8000 sec you wouldn't be peeved. That would be 160,000 loads of crockery cleaned before it expired. At one load a day your 20 minute dishwasher would last over 400 years.
 
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