damaged 50mm 1.4?

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Archive 2009 · damaged 50mm 1.4?

wizzards
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p.1 #1 · damaged 50mm 1.4?

2 weeks ago when picking up my small CCS shoulder bag containing my 5d 50/1.4 85/1.8 ,I found that I had stupidly forgotten to pulled the draw string ,which closes the top , my 5d with 50/1.4 attached and 85/1.8 fell out .They fell approx 2 feet onto the ground ,which was hard dirt ,the body has 3 smallish marks on the top and lenses no marks I can see ,But know the 50m dose not auto focus and the 85 seems to focus but does not seem as sharp as before ,would a smallish drop cause this type of problem ,I believe I have read somewhere that the 50m has problems with the focus failing ,does anybody know of any problems with the focus failing on 50./1.4 ,it may have just packed up after all ,so any info will be greatfully received,
many thanks
peter

Apr 04, 2009 at 09:48 PM

dcains
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p.1 #2 · damaged 50mm 1.4?

I hope you're not blaming the lens' AF failure on their poor resistance to being dropped. That would just be silly, right?

Apr 04, 2009 at 09:54 PM

Norwin Uy
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p.1 #3 · damaged 50mm 1.4?

I think the 50mm f/1.4 is prone to AF-assembly breakage. Mine just came back from service after I bought it broken from someone who hadn't used it in 3 years. It just sat in the box, yet broke.

The 85mm f/1.8 issue might be in the mind, however I did run some focus tests on mine and my copy definitely had a focus issue. Either my camera was back focussing it or there was a de-centered element.

Apr 04, 2009 at 09:56 PM

AlexHM
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p.1 #4 · damaged 50mm 1.4?

I believe that the 50 1.4 NEEDS the hood attached for protection. Did you have a hood mounted on your 50? the hood transfers frontal shock to a strong(er) part of lens body. Without hood a minor impact on front edge of lens can break/damage the AF.

or so I theorize--hope it's not an expensive fix. Perhaps Norwin can relay what his repair cost. Of course, maybe it's not the same problem. But the 1.4 is a bit notorious for delicate AF as mentioned.

Apr 04, 2009 at 11:55 PM

Steverock01
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p.1 #5 · damaged 50mm 1.4?

Hoods don't always protect. I had the hood on my 50L and caught it on the wooden arm of a chair. There was apparently enough leverage on the hood to pull the hood with front plastic parts free of the the lens barrel.

Resulting in a quote from Canon for $672.44 to repair a lens which still autofocusses but has an annoying loose bit at the front and on which I can't use the hood for fear of pulling the front bits off completely.

Replace Focus Assembly $258.24, straighten barrel collar $3.07, labour $337.00, freight $13.00 donation to govt $61.13.

It's expensive being a clumsy bastard!

Apr 05, 2009 at 01:21 AM

15Bit
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p.1 #6 · damaged 50mm 1.4?

I dropped my 50 1.4 a few weeks back (and only 3 days after i bought it). The focus system was clearly jammed afterward - manual would move a bit but auto would only twitch. Currency translation to UK may not be accurate but i can tell you that i paid 60% of the cost of the lens new to have it repaired.

Being clumsy is expensive. And you feel really dumb afterward, especially when your girlfriend keeps reminding you of it.

jools

Apr 05, 2009 at 08:33 AM

mh2000
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p.1 #7 · damaged 50mm 1.4?

I 50/1.4 failed after I sold it to a friend. He did not drop it. Of course, when they are so prone to breakage without a drop, a drop would have to be more likely to break one than just sitting in a box, don't you think?

Buy an EF 50/1.8... and replace it whenever you break them.

Apr 05, 2009 at 10:26 AM

obroni
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p.1 #8 · damaged 50mm 1.4?

The AF barrel of 50/1.4 is fragile, which is a sort of a design flaw. So, yes, broken AF issues are common for this lens. It happened to me twice (never dropped it). I sold it after that and will never buy it again unless it is redesigned. The repair cost was some USD 150.

Apr 05, 2009 at 12:26 PM

wizzards
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p.1 #9 · damaged 50mm 1.4?

Thanks for all that replied,as I just hope my insurance will cover the cost ,I am know wondering if the body will have suffered any internal damage ,it could turn out to be a very expensive ,all very annoying
once again many thanks for help given

Apr 05, 2009 at 09:53 PM

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