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hifisapi
Joined: 25 Sep 2012 Posts: 941 Location: USA
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Posted: Sat Nov 17, 2012 3:03 am Post subject: Best aperture setting for storing lenses? |
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hifisapi wrote:
On Pentax and some other brand lenses, the aperture is closed when the lens is in storage (off the body).
Im wondering do you all think its better to store the lens with the aperture ring set wide open (closing spring engaged)
or with the aperture ring set to smallest fstop (F32,etc) which puts less stress on the aperture closing spring?
I have been storing my Pentax lenses at smallest fstop for some time now with no problems but just wondered
if there is a consensus on this matter or not.
Also on some lenses, like automatic M42 lenses, the aperture is normally open. On these does it not matter what
fstop setting they are stored at because the aperture is always open? Or should they be set wide open or fully
stopped down for long term storage? _________________ ===========
ACQUIRED OVER 30 YEARS:
Cameras: DSLR=Pentax istDS FILM=Pentax SP, SP-F, ESII, SP1000, KX, K2
Lenses : Pentax M42 = Super Multi Coated Takumars 50/1.4 55/1.8 100/4-BELLOWS 500/4.5 1000/8 135-600/6.7 Pentax PK= SMC Pentax-Ks K17/4-FF Fisheye K18/3.5 K20/4 K24/3.5 K28/3.5 K28/2 K35/3.5 K35/2 K50/1.2 K50/1.4K 50/4-MACROK 55/1.8 K85/1.8 K100/4-MACRO K100/4-BELLOWS K105/2.8 K120/2.8 K135/3.5 K135/2.5 K150/4 K200/4 K400/5.6 K45-125/4K 85-210/4.5 Pentax PKM = SMC Pentax-M M40/2.8-Pancake M50/1.4 M75-150/4 M80-200/4.5 Pentax PKA= SMC Pentax-A A15/3.5 A50/2.8-MACRO A28/2 A35/2 A50/1.4 A135/2.8 A200/4 A*300/4 A35-105/3.5 A24-50/4 A70-210/4 TAMRON AD2= SP80-200/2.8 SP180/2.5 TOKINA AT-X PK= ATX28-85/3.5-4.5 ATX35-70/2.8 ATX60-120/2.8 ATX80-200/2.8 ATX100-300/4 ATX90/2.5 MACRO KIRON-LESTER DINE PK = 105/2.8-MACRO VIVITAR PK = 135/2.8-MACRO 28-85/4 NOFLEXAR AUTOBELLOWS PK = 60/4 105/4
Last edited by hifisapi on Sat Nov 17, 2012 5:11 am; edited 1 time in total |
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Aanything
Joined: 27 Aug 2011 Posts: 2187 Location: Piacenza, Italy
Expire: 2014-05-30
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Posted: Sat Nov 17, 2012 4:02 am Post subject: |
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Aanything wrote:
I have almost only m42s and I tend to store them wide open in a transparent box, mainly to let uv light run through the lens and contrast fungi. No problems wit the springs or blades so far. _________________ C&C and editing of my pics are always welcome
Samples from my lenses
My gear
My Flickr |
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Orio
Joined: 24 Feb 2007 Posts: 29545 Location: West Emilia
Expire: 2012-12-04
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Posted: Sat Nov 17, 2012 4:22 am Post subject: Re: Best aperture setting for storing lenses? |
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Orio wrote:
hifisapi wrote: |
Best aperture setting for storing lenses? should they be set wide open or fully
stopped down for long term storage? |
All stopped down.
I learned that the hard way, with Zeiss Jena lenses. At least 3 of them (maybe more, can't remember) I left wide open in the box,
and when I took them out, after a year or so, the iris could not close, it got stuck to the edge of the barrel.
Aanything wrote: |
I tend to store them wide open in a transparent box, mainly to let uv light run through the lens and contrast fungi. |
If you store them clean in an airtight plastic box, with a little silica gel inside, fungus will not grow, even in total darkness.
Much worse to leave old blades with old grease squeezed together near metal parts of barrel. _________________ Orio, Administrator
T*
NE CEDE MALIS AUDENTIOR ITO
Ferrania film is reborn! http://www.filmferrania.it/
Support the Ornano film chemicals company and help them survive!
http://forum.mflenses.com/ornano-chemical-products-t55525.html |
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Nikonshooter
Joined: 12 Nov 2012 Posts: 228 Location: Spokane, Washington
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Posted: Sat Nov 17, 2012 4:26 am Post subject: |
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Nikonshooter wrote:
If your storing them wide open in the box wouldn't fungus still grow because of the dark? I was told that leaving it outside would do better at perventing the fungus. _________________ D7000
Nikon 50mm E F1.8
Vivitar 70-210mm F3.5 x4
Rokinon 28mm F2.8
Nikon 35mm E F2.5
Jupiter 9 (1954)
SMC Takumar 28mm 3.5
Super Takumar 200mm 3.5
SMC TAKUMAR 135MM 2.5
MamiyaRZ67
Sekor RZ 110 mm f/2.8
Sekor RZ 150 mm f/3.5
Sekor RZ 180 mm f/4.5 |
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Orio
Joined: 24 Feb 2007 Posts: 29545 Location: West Emilia
Expire: 2012-12-04
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Posted: Sat Nov 17, 2012 4:32 am Post subject: |
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Orio wrote:
Nikonshooter wrote: |
If your storing them wide open in the box wouldn't fungus still grow because of the dark? |
No. Darkness is a facilitating factor, but not a necessary one.
Necessary factors are
1- organic dirt with spores
2- humidity
the spores because that's where the fungus is born from, organic dirt because fungus feeds on it, humidity because like all life forms it needs water to grow.
That is the process.
Keeping the lens clean greatly helps, but spores can be invisible, so you can't get total safety by simple cleaning.
The decisive factor is humidity. Control humidity, and you will control fungus, even if there are spores, even if there is dirt, and even if it's dark.
A humidity value between 40% and 55% will ensure that you don't grow fungus in your lenses. _________________ Orio, Administrator
T*
NE CEDE MALIS AUDENTIOR ITO
Ferrania film is reborn! http://www.filmferrania.it/
Support the Ornano film chemicals company and help them survive!
http://forum.mflenses.com/ornano-chemical-products-t55525.html |
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Nikonshooter
Joined: 12 Nov 2012 Posts: 228 Location: Spokane, Washington
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Posted: Sat Nov 17, 2012 4:50 am Post subject: |
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Nikonshooter wrote:
How does the dirt get inside between the glass? I watched a video on youtube on how optic lens are made, and the process is very sterile. They use optic glue to seal two peices of glass together. I do know that Push/pull lens suck in air as you move the slider back and fouth. But what about primes that is more "sealed". Does fungus occur more in older lens. Also it it true that it eats away at the coating? _________________ D7000
Nikon 50mm E F1.8
Vivitar 70-210mm F3.5 x4
Rokinon 28mm F2.8
Nikon 35mm E F2.5
Jupiter 9 (1954)
SMC Takumar 28mm 3.5
Super Takumar 200mm 3.5
SMC TAKUMAR 135MM 2.5
MamiyaRZ67
Sekor RZ 110 mm f/2.8
Sekor RZ 150 mm f/3.5
Sekor RZ 180 mm f/4.5 |
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hifisapi
Joined: 25 Sep 2012 Posts: 941 Location: USA
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Posted: Sat Nov 17, 2012 5:02 am Post subject: Straying off topic |
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hifisapi wrote:
Id like to keep the thread centered on best aperture setting to store lenses, NOT on fungus issues or general storage tips. _________________ ===========
ACQUIRED OVER 30 YEARS:
Cameras: DSLR=Pentax istDS FILM=Pentax SP, SP-F, ESII, SP1000, KX, K2
Lenses : Pentax M42 = Super Multi Coated Takumars 50/1.4 55/1.8 100/4-BELLOWS 500/4.5 1000/8 135-600/6.7 Pentax PK= SMC Pentax-Ks K17/4-FF Fisheye K18/3.5 K20/4 K24/3.5 K28/3.5 K28/2 K35/3.5 K35/2 K50/1.2 K50/1.4K 50/4-MACROK 55/1.8 K85/1.8 K100/4-MACRO K100/4-BELLOWS K105/2.8 K120/2.8 K135/3.5 K135/2.5 K150/4 K200/4 K400/5.6 K45-125/4K 85-210/4.5 Pentax PKM = SMC Pentax-M M40/2.8-Pancake M50/1.4 M75-150/4 M80-200/4.5 Pentax PKA= SMC Pentax-A A15/3.5 A50/2.8-MACRO A28/2 A35/2 A50/1.4 A135/2.8 A200/4 A*300/4 A35-105/3.5 A24-50/4 A70-210/4 TAMRON AD2= SP80-200/2.8 SP180/2.5 TOKINA AT-X PK= ATX28-85/3.5-4.5 ATX35-70/2.8 ATX60-120/2.8 ATX80-200/2.8 ATX100-300/4 ATX90/2.5 MACRO KIRON-LESTER DINE PK = 105/2.8-MACRO VIVITAR PK = 135/2.8-MACRO 28-85/4 NOFLEXAR AUTOBELLOWS PK = 60/4 105/4 |
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buerokratiehasser
Joined: 12 Jun 2011 Posts: 470
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Posted: Sat Nov 17, 2012 5:44 am Post subject: |
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buerokratiehasser wrote:
Well if I remember correctly, the A-mount caps make the aperture go open as you screw them on. I don't know why. |
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hifisapi
Joined: 25 Sep 2012 Posts: 941 Location: USA
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Posted: Sat Nov 17, 2012 6:14 am Post subject: |
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hifisapi wrote:
buerokratiehasser wrote: |
Well if I remember correctly, the A-mount caps make the aperture go open as you screw them on. I don't know why. |
Ive never noticed that, but Im not sure any of my caps are "A" mount caps either. _________________ ===========
ACQUIRED OVER 30 YEARS:
Cameras: DSLR=Pentax istDS FILM=Pentax SP, SP-F, ESII, SP1000, KX, K2
Lenses : Pentax M42 = Super Multi Coated Takumars 50/1.4 55/1.8 100/4-BELLOWS 500/4.5 1000/8 135-600/6.7 Pentax PK= SMC Pentax-Ks K17/4-FF Fisheye K18/3.5 K20/4 K24/3.5 K28/3.5 K28/2 K35/3.5 K35/2 K50/1.2 K50/1.4K 50/4-MACROK 55/1.8 K85/1.8 K100/4-MACRO K100/4-BELLOWS K105/2.8 K120/2.8 K135/3.5 K135/2.5 K150/4 K200/4 K400/5.6 K45-125/4K 85-210/4.5 Pentax PKM = SMC Pentax-M M40/2.8-Pancake M50/1.4 M75-150/4 M80-200/4.5 Pentax PKA= SMC Pentax-A A15/3.5 A50/2.8-MACRO A28/2 A35/2 A50/1.4 A135/2.8 A200/4 A*300/4 A35-105/3.5 A24-50/4 A70-210/4 TAMRON AD2= SP80-200/2.8 SP180/2.5 TOKINA AT-X PK= ATX28-85/3.5-4.5 ATX35-70/2.8 ATX60-120/2.8 ATX80-200/2.8 ATX100-300/4 ATX90/2.5 MACRO KIRON-LESTER DINE PK = 105/2.8-MACRO VIVITAR PK = 135/2.8-MACRO 28-85/4 NOFLEXAR AUTOBELLOWS PK = 60/4 105/4 |
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Yahvel
Joined: 12 Oct 2012 Posts: 243 Location: USA
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Posted: Sat Nov 17, 2012 6:47 am Post subject: |
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Yahvel wrote:
I leave them locked inside this little trunk with 2 packs of Silica-Gel in my living room with a fluorescent light bulb shining on them every night. I hope using these preventive measures they will never get Fungus.
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Orio
Joined: 24 Feb 2007 Posts: 29545 Location: West Emilia
Expire: 2012-12-04
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Posted: Sat Nov 17, 2012 10:43 am Post subject: Re: Straying off topic |
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Orio wrote:
hifisapi wrote: |
Id like to keep the thread centered on best aperture setting to store lenses, NOT on fungus issues or general storage tips. |
That's fair expectation, please keep it on topic.
My also fair expectation is that from now on, you post threads of this subject in the appropriate forum ("Equipment Care and Repairs"). Thanks.
(I have moved the thread). _________________ Orio, Administrator
T*
NE CEDE MALIS AUDENTIOR ITO
Ferrania film is reborn! http://www.filmferrania.it/
Support the Ornano film chemicals company and help them survive!
http://forum.mflenses.com/ornano-chemical-products-t55525.html |
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guardian
Joined: 18 Mar 2009 Posts: 1746
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Posted: Fri Nov 23, 2012 11:31 pm Post subject: |
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guardian wrote:
Speaking from my gut, I would store any lens in a manner which imparts to its mechanisms the least stored energy. That would mean, I believe more often than not, storage with aperture closed to the maximum extent possible. However, exceptions obviously could exist. An examination of the mechanism should provide an answer.
Also from my gut, though, I would store with aperture closed, and in low moisture environment, to minimize blade to blade contact with potential for rust/corrosion/etc. which might result in stickiness or sluggishness.
The fact low moisture also is a negative for fungus is an additional side benefit. But setting aside fungal considerations as the OP has requested, and thinking only of the iris:
metal + moisture + the passage of time can = trouble
This goes double if one happens to be storing the lens in a more corrosive environment, e.g., a seaside home with its "salt air". |
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Mark
Joined: 01 Dec 2012 Posts: 251 Location: Budapest, Hungary
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Posted: Wed Mar 06, 2013 7:14 pm Post subject: |
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Mark wrote:
Hello!
Aperture blades are stuck on a Pentacon 135mm lens I bought not long ago. I had to take it to a local camera shop to get it repaired. They told me that I should store A/M lenses either in automatic mode, or stopped down. What do you think, which method is better? _________________ Latest post on my blog (no new posts):
http://lightbeam-photography.blogspot.hu/2013/10/sword-lilies.html |
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Mark
Joined: 01 Dec 2012 Posts: 251 Location: Budapest, Hungary
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Posted: Wed Mar 06, 2013 7:34 pm Post subject: |
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Mark wrote:
Yahvel wrote: |
I leave them locked inside this little trunk with 2 packs of Silica-Gel in my living room with a fluorescent light bulb shining on them every night. I hope using these preventive measures they will never get Fungus.
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Nice collection! _________________ Latest post on my blog (no new posts):
http://lightbeam-photography.blogspot.hu/2013/10/sword-lilies.html |
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kds315*
Joined: 12 Mar 2008 Posts: 16644 Location: Weinheim, Germany
Expire: 2021-03-09
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Posted: Wed Mar 06, 2013 8:06 pm Post subject: |
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kds315* wrote:
A Zeiss (Jena) Service Tech once told me to use the middle aperture setting to store lenses. _________________ Klaus - Admin
"S'il vient a point, me souviendra" [Thomas Bohier (1460-1523)]
http://www.macrolenses.de for macro and special lens info
http://www.pbase.com/kds315/uv_photos for UV Images and lens/filter info
https://www.flickr.com/photos/kds315/albums my albums using various lenses
http://photographyoftheinvisibleworld.blogspot.com/ my UV BLOG
http://www.travelmeetsfood.com/blog Food + Travel BLOG
https://galeriafotografia.com Architecture + Drone photography
Currently most FAV lens(es):
X80QF f3.2/80mm
Hypergon f11/26mm
ELCAN UV f5.6/52mm
Zeiss UV-Planar f4/60mm
Zeiss UV-Planar f2/62mm
Lomo Уфар-12 f2.5/41mm
Lomo Зуфар-2 f4.0/350mm
Lomo ZIKAR-1A f1.2/100mm
Nikon UV Nikkor f4.5/105mm
Zeiss UV-Sonnar f4.3/105mm
CERCO UV-VIS-NIR f1.8/45mm
CERCO UV-VIS-NIR f4.1/94mm
CERCO UV-VIS-NIR f2.8/100mm
Steinheil Quarzobjektiv f1.8/50mm
Pentax Quartz Takumar f3.5/85mm
Carl Zeiss Jena UV-Objektiv f4/60mm
NYE OPTICAL Lyman-Alpha II f1.1/90mm
NYE OPTICAL Lyman-Alpha I f2.8/200mm
COASTAL OPTICS f4/60mm UV-VIS-IR Apo
COASTAL OPTICS f4.5/105mm UV-Micro-Apo
Pentax Ultra-Achromatic Takumar f4.5/85mm
Pentax Ultra-Achromatic Takumar f5.6/300mm
Rodenstock UV-Rodagon f5.6/60mm + 105mm + 150mm
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guardian
Joined: 18 Mar 2009 Posts: 1746
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Posted: Thu Mar 07, 2013 6:22 am Post subject: Re: Best aperture setting for storing lenses? |
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guardian wrote:
Orio wrote: |
hifisapi wrote: |
Best aperture setting for storing lenses? should they be set wide open or fully
stopped down for long term storage? |
All stopped down.
I learned that the hard way, with Zeiss Jena lenses. At least 3 of them (maybe more, can't remember) I left wide open in the box,
and when I took them out, after a year or so, the iris could not close, it got stuck to the edge of the barrel.
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Agreed. Very well stated. Here is why:
A stopped down iris minimizes blade-to-blade contact. Wide open iris maximizes that contact. Over time, and in the presence of moisture and/or contaminants, the blades can adhere owing to minute amounts of oxidation/corrosion between the blades and especially at their edges. This tends to bind them together.
Stopped down is the best you can do. It also does not hurt to exercise the iris from time to time, rather than leaving the blades motionless and inactive for protracted periods. |
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Mark
Joined: 01 Dec 2012 Posts: 251 Location: Budapest, Hungary
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Posted: Fri Mar 08, 2013 2:05 pm Post subject: Re: Best aperture setting for storing lenses? |
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Mark wrote:
guardian wrote: |
Orio wrote: |
hifisapi wrote: |
Best aperture setting for storing lenses? should they be set wide open or fully
stopped down for long term storage? |
All stopped down.
I learned that the hard way, with Zeiss Jena lenses. At least 3 of them (maybe more, can't remember) I left wide open in the box,
and when I took them out, after a year or so, the iris could not close, it got stuck to the edge of the barrel.
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Agreed. Very well stated. Here is why:
A stopped down iris minimizes blade-to-blade contact. Wide open iris maximizes that contact. Over time, and in the presence of moisture and/or contaminants, the blades can adhere owing to minute amounts of oxidation/corrosion between the blades and especially at their edges. This tends to bind them together.
Stopped down is the best you can do. It also does not hurt to exercise the iris from time to time, rather than leaving the blades motionless and inactive for protracted periods. |
Thanks for the answers! I would like to preserve these gems for a long time. _________________ Latest post on my blog (no new posts):
http://lightbeam-photography.blogspot.hu/2013/10/sword-lilies.html |
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Attila
Joined: 24 Feb 2007 Posts: 57865 Location: Hungary
Expire: 2025-11-18
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Posted: Fri Mar 08, 2013 6:44 pm Post subject: |
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Attila wrote:
Yahvel wrote: |
I leave them locked inside this little trunk with 2 packs of Silica-Gel in my living room with a fluorescent light bulb shining on them every night. I hope using these preventive measures they will never get Fungus.
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Put a trustworthy hygrometer to box and look , in my opinion when weather is humid , those two little pack count nothing... _________________ -------------------------------
Items on sale on Ebay
Sony NEX-7 Carl Zeiss Planar 85mm f1.4, Minolta MD 35mm f1.8, Konica 135mm f2.5, Minolta MD 50mm f1.2, Minolta MD 250mm f5.6, Carl Zeiss Sonnar 180mm f2.8
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LucisPictor
Joined: 26 Feb 2007 Posts: 17633 Location: Oberhessen, Germany / Maidstone ('95-'96)
Expire: 2013-12-03
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Posted: Fri Mar 08, 2013 7:00 pm Post subject: |
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LucisPictor wrote:
kds315* wrote: |
A Zeiss (Jena) Service Tech once told me to use the middle aperture setting to store lenses. |
Good to read, 'cause that's what I do. _________________ Personal forum activity on pause every now and again (due to job obligations)!
Carsten, former Moderator
Things ON SALE
Carsten = "KAPCTEH" = "Karusutenu" | T-shirt?.........................My photos from Emilia: http://www.schouler.net/emilia/emilia2011.html
My gear: http://retrocameracs.wordpress.com/ausrustung/
Old list: http://forum.mflenses.com/viewtopic.php?t=65 (Not up-to-date, sorry!) | http://www.lucispictor.de | http://www.alensaweek.wordpress.com |
http://www.retrocamera.de |
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