Particle in new lens


bennjerry

New Member
May 4, 2010
23
0
0
35
#1
Hi guys, I just brought a new lens yesterday. After using it for a day , I saw a particle size of 0.5mm inside e rear element glass. Please advise what to do. Thanks.
 

Rashkae

Senior Member
Nov 28, 2005
19,105
12
0
#2
Hi guys, I just brought a new lens yesterday. After using it for a day , I saw a particle size of 0.5mm inside e rear element glass. Please advise what to do. Thanks.
Nothing. It's dust. It will always find a way.
 

giantcanopy

Senior Member
Feb 11, 2007
6,232
2
0
SG
#4
Dust specks are a fact of life and they may likely increase as you use it along the way, but I would not be concerned about them.

Congrats on your new lens purchase and grab more shots!

Ryan
 

Shizuma

Senior Member
Mar 19, 2012
2,557
25
0
#5
You used vernier caliper to measure half millimeter? 500 micrometers you know?
 

iguanavon

New Member
Nov 30, 2010
520
1
0
Shimonoseki
#7
Hi guys, I just brought a new lens yesterday. After using it for a day , I saw a particle size of 0.5mm inside e rear element glass. Please advise what to do. Thanks.
Since you've just bought it, just bring it back for exchange??? (if you're particular about new things being free of defects)
 

heshanj

New Member
Aug 18, 2009
744
0
0
30
Ho Chi Minh City
pixelogist.me
#8
i used to be pretty particular about this sort of thing - i wanted my new lenses and all that to be perfect and used to spend quite a bit of time making sure they stayed that way - which was stupid, coz like many have said already, dust gets in no matter how careful you are. time spent worrying about this stuff is time you could use to shoot instead! try to keep your lenses scratch-free, try not to touch the front element and get fingerprints/smudges on it, and clean it when you feel you must. that's about it!
 

lankyal

New Member
Sep 2, 2008
1,318
4
0
#9
There is dust everywhere......

Unless you live in a clean room or vacuum...........
 

sjackal

Senior Member
Jul 9, 2008
4,490
10
38
#10
Check carefully. Confirm more than one speck. Once you find more than 10 specks, all about 0.10 mm, you should bring back to exchange for a new piece within 10 days.

Then repeat.
 

bennjerry

New Member
May 4, 2010
23
0
0
35
#11
Thanks guys for all the tips and advise.
 

Rashkae

Senior Member
Nov 28, 2005
19,105
12
0
#14
This article was a fun read and a big relief. I thought I would have to make plans to send my lens for periodic servicing. Haha.
Periodic servicing is probably the worst thing you can do... every time a lens is disassembled there's a chance it won't be reassembled just right.
 

Dec 12, 2012
871
9
0
Singapore
#15
Rashkae said:
Periodic servicing is probably the worst thing you can do... every time a lens is disassembled there's a chance it won't be reassembled just right.
Hm.. You do have a point. Which means that it would make more sense to sell the lens and get a new one. Great. Somehow that thought puts a smile on my face. Haha.
 

Dec 12, 2012
871
9
0
Singapore
#17
silvermoon1407 said:
Just don't hide the flaw when dealing with prospective buyers...
Ah. But of course. It won't be right to hide the flaw.
 

Last edited:

trd2970

Senior Member
Jun 8, 2005
5,310
1
0
#18
Hm.. You do have a point. Which means that it would make more sense to sell the lens and get a new one. Great. Somehow that thought puts a smile on my face. Haha.
Even if u get a new lens to replace, dust will inevitably end up in the lens after a while unless u keep it in the cabinet 24/7.....so no need to fret over it.
 

eleveninth

Senior Member
Jan 17, 2006
6,217
2
38
#20
Even if u get a new lens to replace, dust will inevitably end up in the lens after a while unless u keep it in the cabinet 24/7.....so no need to fret over it.
keep in dry cabi 24/7 also will get dust.
 

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