dishwashing liquid soap safe for cleaning optics?

Started Jun 16, 2012 | Discussions
EOS_GUY
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dishwashing liquid soap safe for cleaning optics?
Jun 16, 2012

Yesterday I accidentally touch the rear optics of my 85mm 1.2L, first I tried to wipe it using pecpad lens tissue with distilled water but still it smudges, second I tried isoprophyl alcohol but still I can see marks then lastly I tried water with a little of dishwashing liquid soap and viola no more marks, crystal clear! Is it safe to use dishwashing liquid soap in cleaning lenses?

Kjeld Olesen
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Re: dishwashing liquid soap safe for cleaning optics?
In reply to EOS_GUY, Jun 16, 2012

I suppose it does no harm to the glass or coating, but if you get it under the ring holding the outer lens it could be hard to get rid of again.

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photonius
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Re: dishwashing liquid soap safe for cleaning optics?
In reply to EOS_GUY, Jun 16, 2012

EOS_GUY wrote:

Yesterday I accidentally touch the rear optics of my 85mm 1.2L, first I tried to wipe it using pecpad lens tissue with distilled water but still it smudges, second I tried isoprophyl alcohol but still I can see marks then lastly I tried water with a little of dishwashing liquid soap and viola no more marks, crystal clear! Is it safe to use dishwashing liquid soap in cleaning lenses?

As far as I can tell it's safe, less aggressive than some of the lens cleaning compounds. I use it on filters, when the grease doesn't want to come off (one reason for me to use filters, can take them off and wash them).
works very well for grease.
of course with a lens you got to be careful to not get liquid inside.

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victorian squid
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Re: dishwashing liquid soap safe for cleaning optics?
In reply to EOS_GUY, Jun 16, 2012

Dish soap has potential to leave residue, although it should be safe for the lens coating which is pretty durable. I think I'd avoid things like alcohol. You don't say what you're using as a "delivery system".

You should be able to get skin oil off using just a clean micro fiber cloth.

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victorian squid
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Good video on proper lens cleaning techniques
In reply to victorian squid, Jun 16, 2012

From Nick Kelsh:
http://vimeo.com/39494324

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hotdog321
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Re: dishwashing liquid soap safe for cleaning optics?
In reply to EOS_GUY, Jun 16, 2012

I'd recommend a clean microfiber cloth and avoid solvents, alcohol, lens cleaners and soaps unless you have a truly spectacular glob of sticky crud on the lens. Just breathe on the surface and polish clean. This has worked for me for the last 30 years.

By the way, I rarely clean my lenses. New camera owners generally spend way too much time cleaning the lens and damage the multicoating.

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Apewithacamera
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I just place my glass into the dishwasher and gets em squeaky clean. Nt
In reply to EOS_GUY, Jun 16, 2012

No text

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Apewithacamera
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Breath contains bacteria. Bacteria leads to mold. Nt
In reply to hotdog321, Jun 16, 2012

No text

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JstarImaging
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Re: Breath contains bacteria. Bacteria leads to mold. Nt
In reply to Apewithacamera, Jun 16, 2012

IPA on a cotton bud and a lint free cloth to wipe clean.

Use back at base, rather than in the field as you'll create more of a mess.

I've used this method for 25 years with no issues except clean optics.

Cheers

James

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rsn48
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Another post I don't understand...
In reply to EOS_GUY, Jun 16, 2012

Its amazing how many guys will spend all kinds of money on lenses and quality glass, then won't break down and spend $10 on cleaning fluid designed for photo glass. I don't get it, could some one explaining to me so it makes rational sense.

Lots of things guys have tried leave residue on glass, why fiddle with stuff when its clear you don't know what you are doing. Break down and get the cleaning fluid from a photo store, it will last you a decade if no more, mine is 20 years old, I think I paid $4 back then.

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Gearóid Ó Laoi, Garry Lee
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When I have to clean a lens this is what I do
In reply to EOS_GUY, Jun 16, 2012

Tiny drop of detergent in warm water. Agitate.
Small bead of cotton wool dipped in this. Squeeze.
Clean lens.
Dry with dry cotton wool.
Blow on lens.
repeat with dry cotton wool.

I only do this for fingerprints etc., so fairly seldom.

have done so without damage for 35 years.

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andrewsf
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Re: Breath contains bacteria. Bacteria leads to mold. Nt
In reply to Apewithacamera, Jun 17, 2012

Your comment is BS ape.
It has never happened to me so it can't be right.

Apewithacamera wrote:

No text

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Gearóid Ó Laoi, Garry Lee
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Re: Breath contains bacteria. Bacteria leads to mold. Nt
In reply to andrewsf, Jun 17, 2012

andrewsf wrote:
Your comment is BS ape.
It has never happened to me so it can't be right.

Apewithacamera wrote:

No text

Fungus comes from spores in the air. They will settle in someplace damp. There are bacteria everywhere, on your skin, in your mouth, intestines and in your expensive lenses.
There are even bacteria high in the atmosphere.
We couldn't live without bacteria.

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cedrec
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Re: Breath contains bacteria. Bacteria leads to mold. Nt
In reply to Apewithacamera, Jun 17, 2012

Apewithacamera wrote:

Breath contains bacteria. Bacteria leads to mold.

Your post makes me sad for the state of our educational system.

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hotdog321
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Re: Another post I don't understand...
In reply to rsn48, Jun 17, 2012

Lens cleaning liquids are ideal, but people new to photography often put the drops directly on the lens allowing it to seep into the edges and onto the back of the lens where it can't be wiped clean.

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Apewithacamera
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Here have a tissue. nt
In reply to cedrec, Jun 17, 2012

no text

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Apewithacamera
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Good spot for a commercial.
In reply to Gearóid Ó Laoi, Garry Lee, Jun 17, 2012
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trulandphoto
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Re: Another post I don't understand...
In reply to rsn48, Jun 17, 2012

rsn48 wrote:

Its amazing how many guys will spend all kinds of money on lenses and quality glass, then won't break down and spend $10 on cleaning fluid designed for photo glass. I don't get it, could some one explaining to me so it makes rational sense.

Lots of things guys have tried leave residue on glass, why fiddle with stuff when its clear you don't know what you are doing. Break down and get the cleaning fluid from a photo store, it will last you a decade if no more, mine is 20 years old, I think I paid $4 back then.

I still have a spray bottle of ROR with some left over from 20 years ago. If I have to clean off a front element now, I use a Zeiss lens cleaner in a packet (get them at Walmart) then a dry microfiber cloth after it's dried to remove any residue.

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dgovoni
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I use this and so do a number of pros. Never fails to clean a dirty lens.
In reply to EOS_GUY, Jun 17, 2012
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photonius
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Re: dishwashing liquid soap safe for cleaning optics?
In reply to victorian squid, Jun 17, 2012

victorian squid wrote:

Dish soap has potential to leave residue, although it should be safe for the lens coating which is pretty durable.

Quite right, but the liquid detergent is very easy to rinse off with water. If you have distilled water, even better. If you dry off the water after rinsing, it leaves no residue.

You should be able to get skin oil off using just a clean micro fiber cloth.

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