How to check if there's fungus on lens????


Nils82

New Member
Apr 9, 2010
37
0
0
North
#1
Hi all,

Pls advise me.

Can someone teach me how to check/see if there's fungus on lens??? As my friend give me his lens (55-200mm). And from what I see on the surface of the lens it look new and clear. But not sure if there's any fungus in that lens.

Had purchase my dry cabinet last week. And would like to places the 55-200mm lens it in my dry cabinet with my other gears.

And before I purchase my D90, I'm using a PNS camera. Was thinking of putting that in my dry cabinet too... Wanna know if there's anyway of checking it too. As I left it in on my book shelf for quite some time...

Thank you
 

Jan 8, 2009
151
0
0
#2
try googling for "lens fungus" images. then compare to the lens you have.
 

jed091270

Senior Member
Dec 20, 2009
907
0
16
47
Bishan
#4
If the glass is clean and clear then its fungus free......no need to be paranoid. Good thing you have a dry cabinet already. Just put everything inside after using.
 

Octarine

Moderator
Staff member
Jan 3, 2008
12,538
33
48
Pasir Ris
#5
Can someone teach me how to check/see if there's fungus on lens???
On the lens should be easy, more difficult is in the lens. Take a torch light and look through the lens. If there is something that looks similar to the fungus pictures provided by Google .. well.. bingo. But chances are you will just find dust. Nothing to worry.
 

Nils82

New Member
Apr 9, 2010
37
0
0
North
#6
If the glass is clean and clear then its fungus free......no need to be paranoid. Good thing you have a dry cabinet already. Just put everything inside after using.
Thanks bro, If that's the case I will give a check on my PNS camera to see if it's clean and clear before placing it in.. :)
 

Nils82

New Member
Apr 9, 2010
37
0
0
North
#7
On the lens should be easy, more difficult is in the lens. Take a torch light and look through the lens. If there is something that looks similar to the fungus pictures provided by Google .. well.. bingo. But chances are you will just find dust. Nothing to worry.
Thanks for the info bro... :)

Hmmm... so I need to remove the lens from the body first right??? Or no need???? But I think I saw one of the threads/post (In CS) saying that we shouldn't take torch light and shine on the lens... Pls correct me if I'm wrong... Thanks
 

Jan 16, 2010
552
0
0
Singapore
#8
Very simple

In very good day light (specially when the sun is on top) hold your lens in vertical position and look from around 10-20 degree angle from vertical axis. Check both front and rear.

If the sun is not on top then adjust your angle accordingly.

If you see something like the pictures then you know :cry:... if you find some dust particle then just ignore

If you don't find anything then :D
 

Octarine

Moderator
Staff member
Jan 3, 2008
12,538
33
48
Pasir Ris
#9
Hmmm... so I need to remove the lens from the body first right??? Or no need???? But I think I saw one of the threads/post (In CS) saying that we shouldn't take torch light and shine on the lens... Pls correct me if I'm wrong... Thanks
Yes, you need to unmount the lens. But that's the very purpose of DSLR and the lenses: to be mounted and unmounted as and when required.
Not sure in which context this advice was given - but chances are high that it was a joke. There is no reason why one should not shine with a torch light into a lens. After all, the daylight going through is stronger than your torch. I guess it was meant as a joke or "health advice" for those people who get a heart attack from seeing dust inside the lens.
 

Nils82

New Member
Apr 9, 2010
37
0
0
North
#10
Very simple

In very good day light (specially when the sun is on top) hold your lens in vertical position and look from around 10-20 degree angle from vertical axis. Check both front and rear.

If the sun is not on top then adjust your angle accordingly.

If you see something like the pictures then you know :cry:... if you find some dust particle then just ignore

If you don't find anything then :D
Noted. Thanks for the info... :)

Ehhh.... One more thing.... How about PNS camera???
 

Nils82

New Member
Apr 9, 2010
37
0
0
North
#11
Yes, you need to unmount the lens. But that's the very purpose of DSLR and the lenses: to be mounted and unmounted as and when required.
Not sure in which context this advice was given - but chances are high that it was a joke. There is no reason why one should not shine with a torch light into a lens. After all, the daylight going through is stronger than your torch. I guess it was meant as a joke or "health advice" for those people who get a heart attack from seeing dust inside the lens.
LOL... Sound logic.... Thanks again... :)
 

Ralphel

New Member
Nov 29, 2005
105
0
0
#12
you should be able to see some patches on the fotos when you view them in your pc/tv
 

night86mare

Deregistered
Aug 25, 2006
25,541
0
0
www.pbase.com
#13
Hi all,

Pls advise me.

Can someone teach me how to check/see if there's fungus on lens??? As my friend give me his lens (55-200mm). And from what I see on the surface of the lens it look new and clear. But not sure if there's any fungus in that lens.

Had purchase my dry cabinet last week. And would like to places the 55-200mm lens it in my dry cabinet with my other gears.

And before I purchase my D90, I'm using a PNS camera. Was thinking of putting that in my dry cabinet too... Wanna know if there's anyway of checking it too. As I left it in on my book shelf for quite some time...

Thank you
don't think it's that common for PNS to get fungus, but i could be wrong.

look through the glass into the light when the aperture is open, at both ends. if there is fungus you should see many organic looking splotches/spider web like things.
 

Nils82

New Member
Apr 9, 2010
37
0
0
North
#15
don't think it's that common for PNS to get fungus, but i could be wrong.

look through the glass into the light when the aperture is open, at both ends. if there is fungus you should see many organic looking splotches/spider web like things.
Noted... Thanks... :)
 

kaylan2000

New Member
Jan 16, 2010
552
0
0
Singapore
#17
Fungus is a real problem, specially in our humid home. Sometime it's sheer luck, or say bad luck.
Visit peninsula and there are few fungus infected lenses on display.. I noticed it few weeks back in one of the shop there (not CP !!). Those are full grown and already the glasses are damaged (etched).

In normal cases, you will see some spider web or water strain kind of stuff. If you find any trace then be very careful and store the lenses properly. In many cases, if detected early and stored properly then the fungus may dry and will not grow further.

Cleaning fungus is possible if detected early, however quite expensive at CSC
 

Octarine

Moderator
Staff member
Jan 3, 2008
12,538
33
48
Pasir Ris
#18
In normal cases, you will see some spider web or water strain kind of stuff. If you find any trace then be very careful and store the lenses properly. In many cases, if detected early and stored properly then the fungus may dry and will not grow further.

Cleaning fungus is possible if detected early, however quite expensive at CSC
Alternatively you may ask forum member 'fatigue' for help. He has also posted numerous step-by-step guides for those brave enough to open the lens on their own and do DIY cleaning.
Fungus spores can last years in dry cabinet. Once you bring the lens out (e.g. holidays) it will start again. Best to clean the fungus rather than just drying out.
 

Last edited:

Nils82

New Member
Apr 9, 2010
37
0
0
North
#19
Alternatively you may ask forum member 'fatigue' for help. He has also pasted numerous step-by-step guides for those brave enough to open the lens on their own and do DIY cleaning.
Fungus spores can last years in dry cabinet. Once you bring the lens out (e.g. holidays) it will start again. Best to clean the fungus rather than just drying out.
Okok.... Thanks... Will contact Bro fatigue if I need any help... :)
 

Aug 19, 2010
2
0
0
#20
Hi, i need some advice here. I don't know much about cameras. I took out my mom's vintage konica cam, the lens is fixed and don't seem removable to me. I see fungus inside the lens - so it's unreachable. this means that the fungus cannot be reached and the cam is as good as gone, right? Thanks.

edited to add: i don't mind to pay to get this fixed if it's even possible. it holds sentimental memories for me. any advice is appreciated.
 

Last edited:
Top Bottom