| View previous topic :: View next topic |
| Author |
Message |
iangreenhalgh1
Joined: 18 Mar 2011
Posts: 15685
Expire: 2014-01-07
|
 Posted: Sat Nov 14, 2020 4:49 pm Post subject: |
 |
|
iangreenhalgh1 wrote:
| Pancolart wrote: |
I usually don't buy fungus lenses in winter. They can smell terribly inside house. I want discount from seller if he fails to mention it. Nevertheless there is little trick i read somewhere: put such lens in closed plastic bag together with coal. In month or two coal absorbs the smell. I usually add a tea bag  . |
The fungus that grows on a lens doesn't smell. Mildew smells, but that is different.
_________________
I don't care who designed it, who made it or what country it comes from - I just enjoy using it! |
|
| Back to top |
|
 |
jamaeolus
Joined: 19 Mar 2014
Posts: 2927
Location: Eugene
Expire: 2015-08-20
|
| Posted: Sat Nov 14, 2020 6:07 pm Post subject: |
|
|
jamaeolus wrote:
And after opening those tombs they DO start degrading. There are fungus spots all over the paintings inside Tut's tomb now which were not there for 3000 years before. The breath of tourists provides the moisture. We are loving these site to death. Some of the cave art in Europe is off limits for this exact reason.
I will only buy a fungus infected lens if 1. its cheap 2. I have a good idea how to clean it.
Notes:Minor infection on the inside of the front lens is pretty inconsequential as far as shooting.
The cross contamination other lenses is not something I worry about for a couple of reasons, I keep them separated with the plastic bags, and there are fungus spores virtually everywhere. The air around you is filled with bacteria, bacterial spores and fungus spores. That is why food starts degrading soon after opening say a sealed can soup. In college we did an experiment in microbiology class. One petri dish was left closed after pouring the growth medium inside and the other was left open. Both grew cultures but the number and type in the open one was orders of magnitude worse. Keep your soup covered after boiling and it will stay good a lot longer than one left open.
_________________
photos are moments frozen in time
Last edited by jamaeolus on Sun Nov 15, 2020 6:41 pm; edited 1 time in total |
|
| Back to top |
|
|
visualopsins
Joined: 05 Mar 2009
Posts: 10531
Location: California
Expire: 2025-04-11
|
| Posted: Sat Nov 14, 2020 9:12 pm Post subject: |
|
|
visualopsins wrote:
Lens complexity and construction coupled with number of elements is risk factor...
_________________
☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
Cameras: Sony ILCE-7RM2, Spotmatics II, F, and ESII, Nikon P4
Lenses:
M42 Asahi Optical Co., Takumar 1:4 f=35mm, 1:2 f=58mm (Sonnar), 1:2.4 f=58mm (Heliar), 1:2.2 f=55mm (Gaussian), 1:2.8 f=105mm (Model I), 1:2.8/105 (Model II), 1:5.6/200, Tele-Takumar 1:5.6/200, 1:6.3/300, Macro-Takumar 1:4/50, Auto-Takumar 1:2.3 f=35, 1:1.8 f=55mm, 1:2.2 f=55mm, Super-TAKUMAR 1:3.5/28 (fat), 1:2/35 (Fat), 1:1.4/50 (8-element), Super-Multi-Coated Fisheye-TAKUMAR 1:4/17, Super-Multi-Coated TAKUMAR 1:4.5/20, 1:3.5/24, 1:3.5/28, 1:2/35, 1:3.5/35, 1:1.8/85, 1:1.9/85 1:2.8/105, 1:3.5/135, 1:2.5/135 (II), 1:4/150, 1:4/200, 1:4/300, 1:4.5/500, Super-Multi-Coated Macro-TAKUMAR 1:4/50, 1:4/100, Super-Multi-Coated Bellows-TAKUMAR 1:4/100, SMC TAKUMAR 1:1.4/50, 1:1.8/55
M42 Carl Zeiss Jena Flektogon 2.4/35
Contax Carl Zeiss Vario-Sonnar T* 28-70mm F3.5-4.5
Pentax K-mount SMC PENTAX ZOOM 1:3.5 35~105mm, SMC PENTAX ZOOM 1:4 45~125mm
Nikon Micro-NIKKOR-P-C Auto 1:3.5 f=55mm, NIKKOR-P Auto 105mm f/2.5 Pre-AI (Sonnar), Micro-NIKKOR 105mm 1:4 AI, NIKKOR AI-S 35-135mm f/3,5-4,5
Tamron SP 17mm f/3.5 (51B), Tamron SP 17mm f/3.5 (51BB), SP 500mm f/8 (55BB), SP 70-210mm f/3.5 (19AH)
Vivitar 100mm 1:2.8 MC 1:1 Macro Telephoto (Kiron)
|
|
| Back to top |
|
|
iangreenhalgh1
Joined: 18 Mar 2011
Posts: 15685
Expire: 2014-01-07
|
| Posted: Sat Nov 14, 2020 10:24 pm Post subject: |
|
|
iangreenhalgh1 wrote:
I'm happy to try to clean a triplet or a tessar or some other simple prime design. Zoom lenses however, not really, they can be very complex.
_________________
I don't care who designed it, who made it or what country it comes from - I just enjoy using it! |
|
| Back to top |
|
|
Excalibur
Joined: 19 Jul 2009
Posts: 5019
Location: UK
Expire: 2014-04-21
|
| Posted: Sun Nov 15, 2020 7:52 am Post subject: |
|
|
Excalibur wrote:
"Because those tombs are dry as heck. I don't think any moisture can penetrate them. That is partly why the mummified remains are in such a high state of preservation"
Which proves:- keep your lens dry and fungus will not germinate and eventually die.
_________________
Canon A1, AV1, T70 & T90, EOS 300 and EOS300v, Chinon CE and CP-7M. Contax 139, Fuji STX-2, Konica Autoreflex TC, FS-1, FT-1, Minolta X-700, X-300, XD-11, SRT101b, Nikon EM, FM, F4, F90X, Olympus OM2, Pentax S3, Spotmatic, Pentax ME super, Praktica TL 5B, & BC1, , Ricoh KR10super, Yashica T5D, Bronica Etrs, Mamiya RB67 pro AND drum roll:- a Sony Nex 3
.........past gear Tele Rolleiflex and Rollei SL66.
Many lenses from good to excellent. |
|
| Back to top |
|
|
Excalibur
Joined: 19 Jul 2009
Posts: 5019
Location: UK
Expire: 2014-04-21
|
| Posted: Sun Nov 15, 2020 9:16 am Post subject: |
|
|
Excalibur wrote:
*** In college we did an experiment in microbiology class. One petri dish was left closed after pouring the growth medium inside and the other was left open. Both grew cultures but the number and type in the open one was orders of magnitude worse. Keep your soup covered after boiling and it will stay good a lot longer than one left open.**
...a bit off topic but AAMOI:-
on tv last week they left a slice of bread open and eventually it was covered in different types of fungus fighting for dominance, but what was disturbing was black fungus was also present and this can be toxic to humans  
_________________
Canon A1, AV1, T70 & T90, EOS 300 and EOS300v, Chinon CE and CP-7M. Contax 139, Fuji STX-2, Konica Autoreflex TC, FS-1, FT-1, Minolta X-700, X-300, XD-11, SRT101b, Nikon EM, FM, F4, F90X, Olympus OM2, Pentax S3, Spotmatic, Pentax ME super, Praktica TL 5B, & BC1, , Ricoh KR10super, Yashica T5D, Bronica Etrs, Mamiya RB67 pro AND drum roll:- a Sony Nex 3
.........past gear Tele Rolleiflex and Rollei SL66.
Many lenses from good to excellent. |
|
| Back to top |
|
|
jamaeolus
Joined: 19 Mar 2014
Posts: 2927
Location: Eugene
Expire: 2015-08-20
|
| Posted: Sun Nov 15, 2020 6:45 pm Post subject: |
|
|
jamaeolus wrote:
OK now i am way off topic. Fungi are amazing, and kinda scary. My state approved treatment of depression with Psilocybin mushrooms. There have been a couple of good studies to support that use.
_________________
photos are moments frozen in time |
|
| Back to top |
|
|
iangreenhalgh1
Joined: 18 Mar 2011
Posts: 15685
Expire: 2014-01-07
|
| Posted: Sun Nov 15, 2020 6:48 pm Post subject: |
|
|
iangreenhalgh1 wrote:
| jamaeolus wrote: |
| OK now i am way off topic. Fungi are amazing, and kinda scary. My state approved treatment of depression with Psilocybin mushrooms. There have been a couple of good studies to support that use. |
Psilocybin has been known as an effective treatment for depression for over 30 years but it's one of those things that is hard to get approved for use because it's not profitable compared to all the chemical drugs the big pharma companies make.
_________________
I don't care who designed it, who made it or what country it comes from - I just enjoy using it! |
|
| Back to top |
|
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
|
Search
Memberlist
Register
Profile
Log in to check your private messages
Log in
