Darn had an accident with my Siggy 70-200

mazdaman

mazdaman

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terry
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Out last night and tripped over some rocks I was scrambling over and gave my Sigma 70-200 and nasty whack. Ended up with a crack on the top of the lens front element, the glass is ok no marks on the front element. Given a service and calibration at Sigma will be £122:bang: I thought I would get an opinion from the TP toggers! I am not a pixel peeper normally but given my accident with the lens I would appreciate any thoughts on the test photo below.

This is how I tested Camera 30D set with single focus point focusued on the 0 on 60mm tripod mounted with hotshoe level I used mirror lock up as well with the timer function. No PP applied shot in Raw and exported to my Phototbucket account.
Shot @ F2.8 1/400s ISO 100 200mm I think the picture below looks ok and I intend to shot some real world pictures this weekend. PS Its a Siggy 70-200 ex HSM MK1 lens

I have compared to my Siggy 24-60 at F2.8 which was sent back to Sigma for front focus and is now super sharp at F2.8 and it looks ok just want a second opinion before I decide to dip my hand in my pocket and send off to Sigma

http://i170.photobucket.com/albums/u259/treacle111/Sigma70-200untouched.png

Staff Edit : Images changed to clickable links. Pictures must not exceed current forum limits as per the rules.
Please feel free to replace this with a fresh/resized image and remove this text :)
 
My garden furnitures rain cover, guess it blew up when taking this test shot
 
I would get the lens repaired regardless tbh. I think the repair estimate is pretty reasonable too.
 
neil_g said:
if it was a substantial whack id send it off, there could be underlaying issues that might raise their head X days/weeks/months down the line.
Click to expand...

couldnt agree more, get it checked, you dont want it to fail when you need it most.
 
apparently sigma test the lens at 2.8m @70mm and 8m @200mm. tested with a scale @ 30 degrees. icant remember the margin of error the deem acceptable but i think its 3-5mm from the focus point on the scale.
 
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