Dead bug on the inside of my Sigma 50mm f/1.4 front element!! WTF???!!!

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00Q

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#1
I bought a 2nd hand Sigma 50mm f/1.4 on ebay. Its literally new, and boxed, all papers inside crisp.

It was advertised as having a singl piece of "dust" inside. Which doesnt affect the images as it is be beyond the resolution of the lens. So I managed to get it half price. Which is a damn good deal.

It arrived today. And I had a look. The "dust" is a small, tiny dead bug!! WTF. on the inside of the front element....WTF??

Anyway, as described, it doesnt affect the iamges at all. And Im really happy to have got the Sigma 50mm 1.4 literally new for half price. Now the question is.... will this bug cause me future problems? like is it gonna come off the front element? What if it then get to the inside of the back element? will that cause serious problems?

the bug is really small. about 1.5mm in length.

Shall I keep it? Or sell it?
 
#3
I have to agree with Tina. ;D And if you are happy with the lens, keep it, use it. I'd check with a camera repair place and see what the cost to have the bug removed is.I know having a front element replace is usually more than $100, but they are not replacing it. Anyway, can't hurt to ask. Heck, call Sigma they might do it for free.
 
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#4
Alternatively, take a picture with a close-up lens, send it to Sigma and ask them how the bug got there!!!

You can say that if their hardware has a bug one can only think about their software ... ;D
They might even offer to clean it for free... ;D

P.S I still laugh with Tina's post ;D
 
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#5
This incident must be known. Then ebay sellers will have to advertise their Sigma lenses as bug free... ;D

Seriously now, I would also ask for lens cleaning (debugging? ;D)
 
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#6
Send it in to sigma for cleaning. I had good experiences with their customer service.You'll get a cleaned calibrated updated lens back at a decent price.
I sent in a 50 for focus issues.
Not that long ago I sent canon a brand new 60 macro b/c it had a shiny piece of glass behind the front.e. So it can happen to anyone..
Good luck.
 
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#7
you could try a vacuum cleaner, yeah I read about this on the internet, and thought i would give it a go for dust
put you hand over the lens to body mount to sort of seal around it then put the vacuum cleaner tube into the top of your hand, I kept the vacuum on low speed and you can feel the air sucking throught the lens and out the back, I dont think low speed provides enough sucktion to risk damaging any internals.
 
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#9
I'd get ahold of Sigma and see if they have an upgraded version that is bug free. Most beta items always have a few bugs to work out before a final release.

.......... You need to take a photo and post it here so we can see this.

But really.... My photography friend has sent lenses back to Sigma and has gotten great service. They are pretty good here in the states anyway.
 
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#10
The bug might have enough mass that a good sideways whack of the lens would dislodge it from the element and off to the side. I bumped my used Sigma 50mm and suddenly found an eyelash against the inside of the front element. I gave it a good sideways whack into the palm of my other hand and it's gone. I figure it's stuck to the side in there somewhere...
 
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#14
wickidwombat said:
you could try a vacuum cleaner, yeah I read about this on the internet, and thought i would give it a go for dust
put you hand over the lens to body mount to sort of seal around it then put the vacuum cleaner tube into the top of your hand, I kept the vacuum on low speed and you can feel the air sucking throught the lens and out the back, I dont think low speed provides enough sucktion to risk damaging any internals.
Click to expand...

I've done that for lenses I planned to sell. dust barely moved.
 
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#15
00Q said:
I bought a 2nd hand Sigma 50mm f/1.4 on ebay. Its literally new, and boxed, all papers inside crisp.

It was advertised as having a singl piece of "dust" inside. Which doesnt affect the images as it is be beyond the resolution of the lens. So I managed to get it half price. Which is a damn good deal.

It arrived today. And I had a look. The "dust" is a small, tiny dead bug!! WTF. on the inside of the front element....WTF??

Anyway, as described, it doesnt affect the iamges at all. And Im really happy to have got the Sigma 50mm 1.4 literally new for half price. Now the question is.... will this bug cause me future problems? like is it gonna come off the front element? What if it then get to the inside of the back element? will that cause serious problems

the bug is really small. about 1.5mm in length.

Shall I keep it? Or sell it?
Click to expand...
Keep the bug, sell the lens... :)
 
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