How to store lenses?

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Archive 2009 · How to store lenses?

EltonTeng
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p.2 #1 · How to store lenses?

Bifurcator wrote:
Umm I grew up there. Between the mountains and the ocean is semi-tropical. On the other side of the mountains is desert. So we're both right actually.

I live in Orange County. We get about 7 inches of rain each year (14 inches in North LA.) This makes our climate semi-tropical? Humidity is low here except when it rains.

Feb 14, 2009 at 09:36 PM

Bifurcator
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p.2 #2 · How to store lenses?

L O L !!! You sure you're from OC? I grew up in Laguna. Parts of OC get between 25 and 40 inches a year.

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See those dark green areas? Put that map through a blur filter and everything that's greenish classifies as semi-tropical. Did you know that just up the coast a ways still in California there are some major rain forests?

You guys are silly!

Buy a motorcycle and spend some time seeing the State you live in!

Edited on Feb 15, 2009 at 02:38 AM · View previous versions

Feb 15, 2009 at 02:24 AM

Bifurcator
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p.2 #3 · How to store lenses?

Here's a newer one. 2007 - Shows the whole state.

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Source USGS Educational Site. http://education.usgs.gov/california/maps/california_precipitation2.htm

Feb 15, 2009 at 02:29 AM

EltonTeng
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p.2 #4 · How to store lenses?

Bifurcator wrote:
L O L !!! You sure you're from OC? I grew up in Laguna. Parts of OC get between 25 and 40 inches a year.

This image is copyrighted by the owner

Buy a motorcycle and spend some time seeing the State you live in!

Based on your map, Bifurcator, which part of OC gets 25 to 40 inches per year? Please name the municipality - just one in order to educate me.

Feb 15, 2009 at 02:43 AM

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p.2 #5 · How to store lenses?

Sigh... I give up!

Yes, you're right. All of So. California is a Desert. Nothing can live there. The map is a lie. It's a conspiracy!

Fungus doesn't exist either.

Feb 15, 2009 at 02:50 AM

EltonTeng
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p.2 #6 · How to store lenses?

Bifurcator wrote:
Sigh... I give up!

Yes, you're right. All of So. California is a Desert. Nothing can live there. The map is a lie. It's a conspiracy!

Fungus doesn't exist either.

The sad thing is that this exercise shows you can't identify Orange County on a map, at least the two you brought to the thread..

Orange County is represented by (appropriately) orange, which shows the county received on average 10-15 inches per year. This is higher than my recall. The only spec of light green in Orange County is likely the Cleveland National Forest State Park where there is a small area of fern growth. This is also where the mountain lions roam. The stable population in that region include 1) commuters from Riverside to OC who use highway 73, 2) park rangers, and 3) campers.

The four counties with the significant green coverage on the upper left, in order from top to bottom include Monterey County, San Luis Obispo County, Santa Barbara County and Ventura County. People who live there take it as an insult if you refer to them as "SoCal". These counties are collectively termed as "Central Coast." I vacation there several times a year. People who have actually been to SLO/SB/Ven know that Santa Paula river and Santa Ynez river reduce to a small trickle by May. These areas are hardly considered "semi-tropical."

The rest of the blue/green areas in LA/San Bernardino/San Diego counties, are fun areas like Big Bear, Mt Wilson, Mt San Jacinto, Wrightwood

Yosemite (area represented by the blue in the top half of the map), by your definition, is considered semi-tropical?

Please take a flight south to Taiwan if you want to see "sub-tropical" climate. Just don't go too far south because the Ping Dong peninsula is considered "Mediterranean climate", just like Laguna Beach.

By the way, your map is "really old." We're running a drought here and LA will soon pass a law to only allow residents to water their lawns twice a week.

Feb 15, 2009 at 03:28 AM

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p.2 #7 · How to store lenses?

And here I though it just meant you couldn't read, were totally petty and nit-picky, and probably color blind... Hmmm, yup after thinking about it again - that IS what it means. Dang I'm good.

Feb 15, 2009 at 04:04 AM

jon49erfan
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p.2 #8 · How to store lenses?

So if fungus does get into the lens, what can you do to get rid of it before it causes serious damage?

Feb 15, 2009 at 04:23 AM

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p.2 #9 · How to store lenses?

Kill it before it grows too much and prevent other spores from germinating. Any of the seasonings I mentioned will kill it, vinegar will kill it, direct Sun light will kill it, and those fungicide packets will kill it too. I think it has to be growing for quite awhile (4 or 8 days) before you can even see it with a magnifying glass and probably months before it can even begin to affect IQ. If there's old growth on an external surface you might be able to polish it off. If not and it's causing aberrations you have to send it in for repair unless you can repair a lens yourself. If it's in the cement that is binding two flush elements which is pretty common, then you have to send it in as there's no chance of rubbing it off.

I did some more research and the three main fungal families that affect lenses most; Phycomycetes, Ascomycetes and Fungi-Imperfecti, need a couple of days to germinate - not a couple of hours. And 75~80% humidity on the barometer is enough to do it. That's a pretty common percentage for a rainy day. So if it's rainy for three or four days in a row be careful.

Feb 15, 2009 at 01:02 PM

Ian Boys
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p.2 #10 · How to store lenses?

I have heard that ultra violet light kills the fungus so the lenses should be left on max aperture with the lens cap off on the windowsill sometimes. Dunno if it's true.

Feb 15, 2009 at 09:40 PM

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p.2 #11 · How to store lenses?

Yup, it's true! You can also buy a UV light for the same purpose.

Feb 15, 2009 at 11:19 PM

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