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Picked up a used lens from a reputable used gear retailer a few weeks ago, it arrived just in time for a holiday, the only time I had to test it was literally mount it up and check it talked to the bodies, took a few shots, was happy that it focussed right, so packed it and off I went.
As soon as I started using it it became clear it has dirt & a hair inside it, which shoes up in every picture. Its not on the sensor, and its not on front or rear elements, is somewhere in the depths of the lens.
Anything portrait the marks stand out like a saw thumb as they sit right in the sky.
I think they effect focussing as it struggles to focus on anything sometimes, anything atall very occasionally! When its focussed on anything more than 5m away its back focussing, i.e. focussing a bit behind what its confirming its focussed on, which means i have to check and re-check every shot for focus (time consuming and frustrating!).
Whilst away I took the lens to two seperate people, 1 a pro tog who has more kit than most shops who suggested I return it straight away or could chance a cleaning. the second the best camera shop I could find who had a good look, couldn't find a focus problem when tested in the shop but said there was nothing that could be done with the dust as they thought it was maybe within a sealed part of the lens and where had I bought it.
I've got two bodies, a well used 20d (10k shutter actuations, but its been everywhere) and borrowed a mates 450d (as a digi backup body), the problem shows on both cameras (both dirt & back focussing at distances). and a third body, an eos300 as an af film body, it mounts & commuinicates but its a cropped circle lens so not really worth shooting with it on this body.
It was sold as 'as new - immaculate' and I paid near new price for it delivered.
My question is, what should I do? The lens was sold with a warrenty, but as I know too well, warrenties often aren't worth the paper they are written on. How should I approach the retailer in order to solve the problem with least time/hassle/complications. As I've never come across a situation like this before.
I want the lens back, or the same model but a different example, as I love what the lens does. Its just not much use if every shot I take is stained with dirt :bonk:
As soon as I started using it it became clear it has dirt & a hair inside it, which shoes up in every picture. Its not on the sensor, and its not on front or rear elements, is somewhere in the depths of the lens.
Anything portrait the marks stand out like a saw thumb as they sit right in the sky.
I think they effect focussing as it struggles to focus on anything sometimes, anything atall very occasionally! When its focussed on anything more than 5m away its back focussing, i.e. focussing a bit behind what its confirming its focussed on, which means i have to check and re-check every shot for focus (time consuming and frustrating!).
Whilst away I took the lens to two seperate people, 1 a pro tog who has more kit than most shops who suggested I return it straight away or could chance a cleaning. the second the best camera shop I could find who had a good look, couldn't find a focus problem when tested in the shop but said there was nothing that could be done with the dust as they thought it was maybe within a sealed part of the lens and where had I bought it.
I've got two bodies, a well used 20d (10k shutter actuations, but its been everywhere) and borrowed a mates 450d (as a digi backup body), the problem shows on both cameras (both dirt & back focussing at distances). and a third body, an eos300 as an af film body, it mounts & commuinicates but its a cropped circle lens so not really worth shooting with it on this body.
It was sold as 'as new - immaculate' and I paid near new price for it delivered.
My question is, what should I do? The lens was sold with a warrenty, but as I know too well, warrenties often aren't worth the paper they are written on. How should I approach the retailer in order to solve the problem with least time/hassle/complications. As I've never come across a situation like this before.
I want the lens back, or the same model but a different example, as I love what the lens does. Its just not much use if every shot I take is stained with dirt :bonk:
