Join for FREE
It only takes a minute!
Zeiss - Always on the lookout for something special – Shop now

Welcome to BirdForum.
BirdForum is the net's largest birding community, dedicated to wild birds and birding, and is absolutely FREE! You are most welcome to register for an account, which allows you to take part in lively discussions in the forum, post your pictures in the gallery and more.

Leica 10x50BA -Lens Blemish

Reply
 
Thread Tools Rate Thread
Old Monday 23rd July 2018, 15:02   #26
Merlin
Registered User

 
Join Date: Aug 2006
Location: Bristol and Staffordshire
Posts: 1,378
Thank you all,

There is some good, sound advice there.

best regards

Merlin
Merlin is offline  
Reply With Quote
Old Monday 23rd July 2018, 15:35   #27
dries1
Registered User
BF Supporter 2019
 
dries1's Avatar

 
Join Date: Aug 2005
Location: Delaware
Posts: 1,511
Pileatus,

Well then it appears that Leica USA is more efficient than Leica Europe? I live in the US so that is encouraging.

And Bob, I never said Leica was cheaply made, I own four of their glass, use them often, great views and I respect the workmanship, I was talking about another manufacturer not Leica.

Andy W.

Last edited by dries1 : Monday 23rd July 2018 at 15:42.
dries1 is online now  
Reply With Quote

BF Supporter 2018 2019 Support BirdForum With A Donation

Old Monday 23rd July 2018, 20:59   #28
ceasar
Registered User

 
Join Date: Aug 2005
Location: NE Pennsylvania
Posts: 11,756
Quote:
Originally Posted by dries1 View Post
Pileatus,

Well then it appears that Leica USA is more efficient than Leica Europe? I live in the US so that is encouraging.

And Bob, I never said Leica was cheaply made, I own four of their glass, use them often, great views and I respect the workmanship, I was talking about another manufacturer not Leica.

Andy W.
Sorry for the confusion Andy. I misunderstood your comment.

Bob
ceasar is offline  
Reply With Quote

BF Supporter 2010 Support BirdForum With A Donation

Old Tuesday 24th July 2018, 00:20   #29
dries1
Registered User
BF Supporter 2019
 
dries1's Avatar

 
Join Date: Aug 2005
Location: Delaware
Posts: 1,511
Bob,

No worries. Enjoy the rain, we are being pounded in Se Pa.

Andy W.
dries1 is online now  
Reply With Quote

BF Supporter 2018 2019 Support BirdForum With A Donation

Old Tuesday 24th July 2018, 14:03   #30
Binastro
Registered User

 
Join Date: Aug 2012
Location: S.England
Posts: 4,361
No rain here for about 6 weeks.
Beginning to look like the Sahara. Expecting to see camels, although the two clip clops I heard this morning were probably police horses.

If the Leica repair of the 10x50BA is less than 250 in Portugal, it must be worth having it done.
Binastro is offline  
Reply With Quote
Old Tuesday 24th July 2018, 14:11   #31
dries1
Registered User
BF Supporter 2019
 
dries1's Avatar

 
Join Date: Aug 2005
Location: Delaware
Posts: 1,511
Binastro,

No astro all week, and too wet to go out. This has to get better soon.
How is the viewing of birds/stars over there.

Yes that would be a very fair price, that is a nice glass and well worth it.


Andy W.
dries1 is online now  
Reply With Quote

BF Supporter 2018 2019 Support BirdForum With A Donation

Old Tuesday 24th July 2018, 14:34   #32
Binastro
Registered User

 
Join Date: Aug 2012
Location: S.England
Posts: 4,361
Hi Andy,
Last night the transparency was exceptional, but I can't see Mars because of buildings. It is too low.
32C, 90F, yesterday and around that every day for a long time. No hose pipe ban yet. not sure if the moorland is still burning.

I use the Leica 8x32BA for noctilucent cloud observation. season ends about August 4th.

Apparently in Finland they have very good forest management with roads through the forest for quick fire engine access and also large breaks to stop flames jumping.
Each village also has volunteer firefighters.
It seems Sweden has not planned so well and about 80 fires are burning, with help from Poland, Italy, Norway etc.

The trees outside in the street here are distressed with the bark falling off. I have not seen this before.
I suppose the birds are struggling to find water.
I suppose there are some streams and reservoirs.
The foxes look O.K.

Last edited by Binastro : Tuesday 24th July 2018 at 14:37.
Binastro is offline  
Reply With Quote
Old Tuesday 24th July 2018, 23:32   #33
ceasar
Registered User

 
Join Date: Aug 2005
Location: NE Pennsylvania
Posts: 11,756
Quote:
Originally Posted by dries1 View Post
Bob,

No worries. Enjoy the rain, we are being pounded in Se Pa.

Andy W.
Heavy squalls are coming through here every couple of hours. Creeks are high and the Susquehanna is rising but no flooding is expected here. Central PA around the Harrisburg area got more rain.

Bob
ceasar is offline  
Reply With Quote

BF Supporter 2010 Support BirdForum With A Donation

Old Wednesday 25th July 2018, 03:25   #34
dries1
Registered User
BF Supporter 2019
 
dries1's Avatar

 
Join Date: Aug 2005
Location: Delaware
Posts: 1,511
Binastro,

The exact opposite here, had to re-attach a gutter, too much sheet-flow off the roof.

Bob,

I have not seen clouds this low and fast moving for this duration, in a long while, almost directly North.
The winds were gusting up to 35 MPH today, It must be different up where you are, I am only at around 260 feet AMSL.

Andy W.
dries1 is online now  
Reply With Quote

BF Supporter 2018 2019 Support BirdForum With A Donation

Old Saturday 28th July 2018, 00:28   #35
jring
Registered User

 
Join Date: Aug 2015
Location: Germany
Posts: 1,951
Hi,

Leica does not melt optical glass - neither does Zeiss btw, although Zeiss belongs to the Carl Zeiss Foundation which also owns Schott - and those guys actually make optical glass.

Regarding the blemished objective - the explanation seems fairly odd - normally the way to remove MgF based AR coatings involves a lot of polishing - preferably without altering the figure too much.

On CN some scientist needed to modify a Celestron Schmidt-Cassegrain for far IR and the coatings on the corrector plate were opaque for the the desired wavelengths.
He then tried quite some nasty chemicals (he had a lab at hand plus some staff) - iirc the coatings didn't care and he got an uncoated corrector made.

On second thoughts... wasn't there some series of early Leica Televids which didn't like sea water too much and got opaque? Maybe the 10x50 has the same coatings?

Joachim
jring is offline  
Reply With Quote
Old Wednesday 17th October 2018, 18:16   #36
saidentary
Registered User

 
Join Date: Feb 2017
Location: Iowa
Posts: 28
Hello Merlin,

I also own the Leica 10 x 50 BA Trinovid binoculars and I really love them. (Owned since mid 1990's.) So I'm curious how this all turned out for you. Did you send them back to Leica for repair or not?

-Bill
saidentary is offline  
Reply With Quote

BF Supporter 2017 Support BirdForum With A Donation

Old Wednesday 13th March 2019, 10:46   #37
Peaky-B
Registered User
 
Peaky-B's Avatar

 
Join Date: Feb 2019
Location: North West
Posts: 41
Quote:
Originally Posted by Binastro View Post
To me, a possible explanation may be that there is stubborn grease on the front surface of the objective.
Baader Optical Wonder fluid might help.
I had this problem with the used Samyang 85mm f/1.4 lens, which otherwise looked as new. At first I made it worse, but the next day the fluid/grease had gone.

Or some oil on the internal rear surface.

A separated objective where the balsam has failed might have happened, but I am not sure this would be visible in normal use.

The coating layer is so thin, if it separated I think it would have to trap oil or water underneath, but I have never seen this.

Photos may help us see a likely cause.
May I ask a question about Baader Optical Wonder Fluid please.

I've never used it before and regretfully I have limited knowledge in this area. Is the multi coating protection on the lenses affected by the fluid at all, I'm just a little anxious about buying some for my new Minox BL binoculars. I'm just looking for some reassurance that infrequent and a small amount of fluid and gentle application will not affect the coatings. Thanks very much folks...
Peaky-B is offline  
Reply With Quote
Old Wednesday 13th March 2019, 12:20   #38
Foss
Registered User

 
Join Date: Jul 2015
Location: San Diego
Posts: 147
Hi Peaky-B
My new Trinovid HDs surprisingly came with a warning not to clean the lenses with alcohol, my go to lens cleaner for years. In this day and age I'd defer to the manufacturer for specific model cleaning instructions, in your case Minox BL.
Good luck,
Jack
Foss is offline  
Reply With Quote
Old Wednesday 13th March 2019, 14:24   #39
Binastro
Registered User

 
Join Date: Aug 2012
Location: S.England
Posts: 4,361
Peaky-B
If one is at all worried then I would not use anything without consulting the maker.

However, Minox might not know themselves as I think the firm has changed hands and maybe don't make any binoculars themselves.
If they do still manufacture then ask the head of optics.

Leica should know as they make binoculars themselves.
So would Zeiss or Swarovski.

I always try to go straight to the top when asking these questions as sales personnel may not know.

Modern coatings are supposedly harder than the glass that is coated.
Usually the outer glasses are harder than inner glass elements.
However, the modern extra coatings that repel water may not be so forgiving.
It may be this is why alcohol is suspect.
I don't know what nanocoating is, so cannot comment.
Binastro is offline  
Reply With Quote
Old Wednesday 13th March 2019, 18:19   #40
Peaky-B
Registered User
 
Peaky-B's Avatar

 
Join Date: Feb 2019
Location: North West
Posts: 41
Quote:
Originally Posted by Foss View Post
Hi Peaky-B
My new Trinovid HDs surprisingly came with a warning not to clean the lenses with alcohol, my go to lens cleaner for years. In this day and age I'd defer to the manufacturer for specific model cleaning instructions, in your case Minox BL.
Good luck,
Jack
Thanks Foss
Peaky-B is offline  
Reply With Quote
Old Wednesday 13th March 2019, 18:20   #41
Peaky-B
Registered User
 
Peaky-B's Avatar

 
Join Date: Feb 2019
Location: North West
Posts: 41
Quote:
Originally Posted by Binastro View Post
Peaky-B
If one is at all worried then I would not use anything without consulting the maker.

However, Minox might not know themselves as I think the firm has changed hands and maybe don't make any binoculars themselves.
If they do still manufacture then ask the head of optics.

Leica should know as they make binoculars themselves.
So would Zeiss or Swarovski.

I always try to go straight to the top when asking these questions as sales personnel may not know.

Modern coatings are supposedly harder than the glass that is coated.
Usually the outer glasses are harder than inner glass elements.
However, the modern extra coatings that repel water may not be so forgiving.
It may be this is why alcohol is suspect.
I don't know what nanocoating is, so cannot comment.

Thanks Binastro I'll make contact with Minox
Peaky-B is offline  
Reply With Quote
Old Wednesday 13th March 2019, 22:46   #42
Patriot222
Registered User
 
Patriot222's Avatar

 
Join Date: Apr 2007
Location: Arizona
Posts: 162
A friend of my had a bubble like spot "appear" on his 10x50SLC's and at first glance looked like a small chip/scratch on the right objective, less than 2mm in size. We used lens cleaner just to make sure it wasn't something on the glass and concluded that he might have to send it to Swarovski for repair. The day he brought his binocular in to work in order to ship it, we took a careful look with a 10x loupe with some good lighting. The spot looked like a protrusion from the glass not a removal of coatings or a chip. We masked off the objective glass except for the area where the spot was. We soaked it with some alcohol but and dabbed it with a cotton swab. As the alcohol dried the cotton swab started to stick and pull some cotton fibers from the swab. This was our first indication that something sticky was on the glass but the alcohol wasn't taking it off. We debated about using some diluted citrus cleaner and it seemed to start breaking down the substance. We then used some straight citrus cleaner and along with the cotton swab and the substance came off! We took the masking tape off of the objective, took it out in the sun and cleaned everything up with lens cleaner and a microfiber cloth and the glass was beautiful and flawless again! After some review of the cotton swab, there was a distinct pine smell and our best guess is that it was pine pitch that probably got on the glass weeks before and was allowed to harden.

In any case, it was a good lesson for us. Prior to that, we felt that we were proficient at lens care, both having decades of camera and sporting optic experience and could easily identify/rectify any type grime on our optics. It almost fooled us both.

I suppose that the OP is dealing with something more serious as Leica have investigated but his experience reminded me of mine. It would be nice to know if Leica Portugal was able to fix his Trinovid.
Patriot222 is offline  
Reply With Quote
Old Monday 18th March 2019, 10:55   #43
Peaky-B
Registered User
 
Peaky-B's Avatar

 
Join Date: Feb 2019
Location: North West
Posts: 41
Quote:
Originally Posted by Binastro View Post
Peaky-B
If one is at all worried then I would not use anything without consulting the maker.

However, Minox might not know themselves as I think the firm has changed hands and maybe don't make any binoculars themselves.
If they do still manufacture then ask the head of optics.

Leica should know as they make binoculars themselves.
So would Zeiss or Swarovski.

I always try to go straight to the top when asking these questions as sales personnel may not know.

Modern coatings are supposedly harder than the glass that is coated.
Usually the outer glasses are harder than inner glass elements.
However, the modern extra coatings that repel water may not be so forgiving.
It may be this is why alcohol is suspect.
I don't know what nanocoating is, so cannot comment.
Just an update......someone from Minox technical department in Wetzlar Germany has got back to me to advise that there is a delay in respondng and that they will respond as soon as possible with my query.
Peaky-B is offline  
Reply With Quote
Old Wednesday 20th March 2019, 15:48   #44
Peaky-B
Registered User
 
Peaky-B's Avatar

 
Join Date: Feb 2019
Location: North West
Posts: 41
I got a response back today from Minox in Wetzlar Germany re my query......this is what they had to say.

Hi Gary,

thank you for your below email which has been passed on to me. My name is Tilman Taube and I am product manager for the binoculars at MINOX.

Concerning lens cleaning, what we normally recommend is fresh water in combination with a lens cleaning cloth.
In most cases this is fully sufficient.

I do not personally know the cleaner from Baader that you are mentioning but I happen to know the company and they are very reputable and experienced in the optical field. Therefore I would have no hesitation at all using their cleaning fluid.

Greetings from Wetzlar and all the best

Tilman Taube


Mit freundlichen Gren
Best regards

Tilman Taube
Peaky-B is offline  
Reply With Quote
Old Wednesday 20th March 2019, 15:48   #45
Peaky-B
Registered User
 
Peaky-B's Avatar

 
Join Date: Feb 2019
Location: North West
Posts: 41
I got a response back today from Minox in Wetzlar Germany re my query......this is what they had to say.

Hi Gary,

thank you for your below email which has been passed on to me. My name is Tilman Taube and I am product manager for the binoculars at MINOX.

Concerning lens cleaning, what we normally recommend is fresh water in combination with a lens cleaning cloth.
In most cases this is fully sufficient.

I do not personally know the cleaner from Baader that you are mentioning but I happen to know the company and they are very reputable and experienced in the optical field. Therefore I would have no hesitation at all using their cleaning fluid.

Greetings from Wetzlar and all the best

Tilman Taube


Mit freundlichen Gren
Best regards

Tilman Taube



I think therefore I will give Baaders cleaning fluid a try.
Peaky-B is offline  
Reply With Quote
Old Wednesday 20th March 2019, 16:14   #46
Binastro
Registered User

 
Join Date: Aug 2012
Location: S.England
Posts: 4,361
I use Baader Optical Wonder fluid, I think from First Light Optics 11.50?
Follow the instructions given.

However, if I had a binocular with a water resisting coating I would ask an optical expert, as the fluid may remove this coating.
Perhaps someone could advise.
Perhaps FLO can advise, but they told me a new Pentax 8x25 would be far superior to my old 8x24/25?
The new one was Chinese junk. Awful. The old one is as good as any top binocular of the time but has fungus in it as it was not waterproof.
So I have a healthy disregard for what some people tell me.

Unfortunately the Baader Optical Fluid is not I think available in the U.S.A. or Canada, although I suppose a University lab could get it if they tried hard enough.

B.
Binastro is offline  
Reply With Quote
Old Wednesday 20th March 2019, 16:49   #47
MandoBear
Registered User
 
MandoBear's Avatar

 
Join Date: Mar 2018
Location: Hereford UK
Posts: 96
I have used ROR (Residual Oil Remover) which is designed for all optical lenses with good results. Zeiss's Lotutec coatings are unaffected by it - still as water-repellant as ever. Could be woth a try.

This is the website of the UK distributor.
http://www.newprouk.co.uk/ROR-lens-cleaner.html
MandoBear is offline  
Reply With Quote
Old Wednesday 20th March 2019, 22:39   #48
Peaky-B
Registered User
 
Peaky-B's Avatar

 
Join Date: Feb 2019
Location: North West
Posts: 41
Quote:
Originally Posted by MandoBear View Post
I have used ROR (Residual Oil Remover) which is designed for all optical lenses with good results. Zeiss's Lotutec coatings are unaffected by it - still as water-repellant as ever. Could be woth a try.

This is the website of the UK distributor.
http://www.newprouk.co.uk/ROR-lens-cleaner.html
Seems to be good stuff
Peaky-B is offline  
Reply With Quote
Old Sunday 24th March 2019, 12:49   #49
eronald
Registered User

 
Join Date: Mar 2019
Location: Paris
Posts: 106
20 years ago, camera repairers told me they employ a mixture of ether and alcohol for cleaning, but first use a brush to get rid of grit.

The advantage of making your own is usually that you know what goes in it and you can't get a bad batch or make a mistake. The disadvantage is that you need to be informed so you don't make a mistake :)



Edmund
eronald is offline  
Reply With Quote
Advertisement
Reply


Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Lumix Leica 25/1.4 mm lens Neil Panasonic 3 Monday 25th May 2015 22:56
Problems at Leica? / Leica APO 62 / Lens coatings. WCA Leica 1 Tuesday 31st July 2007 15:48
Leica lens cap Nadine Leica 1 Sunday 7th November 2004 18:23

{googleads}

Fatbirder's Top 1000 Birding Websites

Help support BirdForum

Page generated in 0.29374909 seconds with 38 queries
All times are GMT. The time now is 02:24.