A big scare! Is my lens O.K?

[adamj123]

Well as you can probably tell by my relatively low post count i am quite new to these forums and digital photography in general. Anyways, i was lucky enough to recently obtain a Canon 70-200 f2.8 IS lens from Hong Kong, been loving it since.

However, about 10 mins ago as i was getting out of the car after taking some photos with a mate a i hear a smash on floor I look down in utter dismay and shock and see that my new lens had rolled off the seat of my car into the gutter . I quicky ran inside to check that nothing had smashed and IS was working properly and as far as i can tell everything seems ok.

What would be the best way to check that everything is running normal on the lens? I took some sample shots and they also look good however, im worried something may be wrong that i am not picking up...

[sirhc55]

If the pics are OK, bits do not fall off when handling, no unwanted noises from the lens when focusing, etc - then I would say it is OK

[adamj123]

Yeah that all seems ok, are these things generally built to handle rough situations?

[sirhc55]

A matter of luck really, so it must be your lucky night - buy a lottery ticket

[wendellt]

that canon 70-200 IS is built to withstand punishment

best to post 100 crop of test image

[adamj123]

ok...here one i quickly took of my dog

1/60 at f4.0, ISO 400 ,153mm

[Glen]

Adam, your lens seems ok, good news. As you probably read in the FAQ, the image limit is 800 pixels on its largest size. Your image is 800 x 1200. Can you reduce it down? You can see already how it has made all the posts in this thread unreadable without scrolling. Thanks

[wendellt]

its best to take your test image wit flash as you did at 135mm you would get some blur even with IS at 1/60

shoot at 135mm at 1/200 f5 whatever iso allows for correct exposure

take one with IS on and one with IS off

it looks fine to me

[adamj123]

Sorry about that first time posting an image...

Ill get on to those tests shots tomorrow. Thanks for the help so far

[adamj123]

Ok i took some more test shots as you suggested and here are the results (i know they are crappy photos )

taken at 135mm @ f5, ISO 130 1/200

First off i just wanted to show you this...it was taken into the the sun with a lens cover on...is this just some unwanted glare?


Photo 1 - IS off


Photo 1 - IS on


Photo 2 - IS off


Photo 2 - IS on
http://www.propokerplace.com/2ISon.jpg

Thanks alot!

[wendellt]

its all looking good

last two examples are probably better examples
optically everythign checks out unprocessed thats a sharp as these lenses get

now to further test it use is in either mode 1 or 2 in a situation where is would kick in like taking a shot outside while in a car or shaking the camera around
if anything would of been damaged the IS components would be the most fragile

if everything checks out i think its safe to assume your lens is fine

as a side note my nikon 70-200 dropped out of my open bag on my back directly onto concrete once and on several occassions i have dropped it from similar heights, the lens still worked fine, these things are designed and built well iknwo a person who got theres runned over with a motorbike and apart form a bent filter element the lens has been working fine

[Onyx]

It's a fine lens Adam. That lens is Canon's flagship. It's designed to be smashed on the ground on a daily basis for years to come and still perform flawlessly. I place my official seal of guarantee that your lens is in no way broken.

[adamj123]

Thanks everyone for your support i feel a heap better now