Fungus on Prime

Tighelander · 07-05-2017, 09:05 PM

I was looking at a Zeiss 50mm 1.4 lens today, and wonder if it is worth the low price. It's a bit beat up, with some nicks on the body, and a few small scratches on the glass. It also has a little fungus on the front, around the rim. Being a prime, it must be easy to take apart a clean, but will the cleaning remove the fungus?

photoptimist · 07-06-2017, 05:25 AM

If the fungus is on an outer surface, cleaning will remove it although there may be a faint ghost of the fungal tracery where it damaged the coating and the surface is a bit more reflective.

If the "fungus" is really deterioration or delamination of the cement between two elements, then the repair involves a bit more work to fully separate the elements, remove the old cement, and recement them.

07-05-2017, 09:05 PM	#1
Tighelander Senior Member Join Date: Aug 2011 Location: San Diego Photos: Gallery \| Albums Posts: 228	Fungus on Prime I was looking at a Zeiss 50mm 1.4 lens today, and wonder if it is worth the low price. It's a bit beat up, with some nicks on the body, and a few small scratches on the glass. It also has a little fungus on the front, around the rim. Being a prime, it must be easy to take apart a clean, but will the cleaning remove the fungus?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
prime, prime, everywhere a prime...	pepperberry farm	Pentax SLR Lens Discussion	18681	44 Minutes Ago 12:59 PM
People The Turkish Prime Minister and the Deputy Prime Minister (photo series/essay)	alamo5000	Post Your Photos!	2	04-10-2016 10:09 PM
Pentax F 35-70 - keep perfect past-fungus or worse without fungus	Dr.Gaga	Pentax SLR Lens Discussion	2	04-25-2013 05:06 AM
How difficult to rid fungus from an AF prime	DaveHolmes	Pentax SLR Lens Discussion	16	01-27-2012 09:44 PM
Clean fungus prime lens	Sunnyf16	Troubleshooting and Beginner Help	5	10-02-2011 05:39 AM

07-06-2017, 05:25 AM	#2
photoptimist Pentaxian Join Date: Jul 2016 Photos: Albums Posts: 5,128	If the fungus is on an outer surface, cleaning will remove it although there may be a faint ghost of the fungal tracery where it damaged the coating and the surface is a bit more reflective. If the "fungus" is really deterioration or delamination of the cement between two elements, then the repair involves a bit more work to fully separate the elements, remove the old cement, and recement them.