bmcc 25k oily glass

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Dustin Uy

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bmcc 25k oily glass

PostWed Feb 17, 2016 12:28 pm

anybody here experienced this?
http://tinypic.com/r/htcwpd/9
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Andrew Bell

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Re: bmcc 25k oily glass

PostWed Feb 17, 2016 1:54 pm

Did you used some Metabones adapter?
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Ulysses Paiva

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Re: bmcc 25k oily glass

PostWed Feb 17, 2016 2:13 pm

I did/do.

Looks like fungus the same we get on lenses (dont sure if could be some sort of leakage coming from any eletronic inner part).
I tried to clean it a lot but most part seemed to be in the inner part of the glass.
i was glad to see that glass protecting the sensor, but to me it looked like I would need to tear the camera apart to clean it, so I gave up.

If anybody else has a good idea or did solved it well, I too would like to know.
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chris.white

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Re: bmcc 25k oily glass

PostWed Feb 17, 2016 4:01 pm

Ulysses Paiva wrote:I did/do.

Looks like fungus the same we get on lenses (dont sure if could be some sort of leakage coming from any eletronic inner part).
I tried to clean it a lot but most part seemed to be in the inner part of the glass.
i was glad to see that glass protecting the sensor, but to me it looked like I would need to tear the camera apart to clean it, so I gave up.

If anybody else has a good idea or did solved it well, I too would like to know.


Which metabones adaptor are you using? I've had the passive MFT to Nikon F BMCC version on my camera for the entire 2 years I've owned it and have no issues. I was considering picking up the EF version so I could swap lenses with my forthcoming ursa 4.6 as needed... might think twice if that's the result :shock:
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Anatoly Mashanov

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Re: bmcc 25k oily glass

PostWed Feb 17, 2016 4:08 pm

It looks like fungus and usually is repairable. Just disassemble it and wash the glass. YOU LOSE ALL WARRANTY. The sooner you repair the better since the fungus produces the substances that decompose the surface.
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Andrew Bell

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Re: bmcc 25k oily glass

PostWed Feb 17, 2016 4:57 pm

Be careful! This 'glass' can be a IR-cut filter with some kind of coating.
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Ulysses Paiva

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Re: bmcc 25k oily glass

PostWed Feb 17, 2016 7:38 pm

I, particularily, dont feel comfortable disassebling it. Its not on warranty anymore though.

chris.white wrote:
Ulysses Paiva wrote:I did/do.

Looks like fungus the same we get on lenses (dont sure if could be some sort of leakage coming from any eletronic inner part).
I tried to clean it a lot but most part seemed to be in the inner part of the glass.
i was glad to see that glass protecting the sensor, but to me it looked like I would need to tear the camera apart to clean it, so I gave up.

If anybody else has a good idea or did solved it well, I too would like to know.


Which metabones adaptor are you using? I've had the passive MFT to Nikon F BMCC version on my camera for the entire 2 years I've owned it and have no issues. I was considering picking up the EF version so I could swap lenses with my forthcoming ursa 4.6 as needed... might think twice if that's the result :shock:
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Chris, I have the EF mount version. Never used a metabones. I does look like oil-ish thing but its probably fungus. The sh*t part here is that it is inside the camera/ behind the glass, therefore not reachable without disassembling the camera.


Anybody has other suggestions?
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chris.white

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Re: bmcc 25k oily glass

PostWed Feb 17, 2016 10:09 pm

Ulysses Paiva wrote:I, particularily, dont feel comfortable disassebling it. Its not on warranty anymore though.

Chris, I have the EF mount version. Never used a metabones. I does look like oil-ish thing but its probably fungus. The sh*t part here is that it is inside the camera/ behind the glass, therefore not reachable without disassembling the camera.


Anybody has other suggestions?


Ah... sorry, Ulysses... I misunderstood your "I did/do" as a reply to the post before yours about using the metabones speedbooster.

Yeah, that doesn't look like a good situation... wish I had a simple answer for you, but I'd guess some level of disassembly would certainly be required. If you're not comfortable with the DIY route, your best bet is to probably find a BM authorized repair center, or send it back to BM.
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Anatoly Mashanov

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Re: bmcc 25k oily glass

PostThu Feb 18, 2016 1:59 am

Andrew Bell wrote:Be careful! This 'glass' can be a IR-cut filter with some kind of coating.


It IS a IR-cut filter and it HAS some kind of coating. The sensor also has some coating. And the fungus is known to etch the coating making lenses unusable so it should be cleaned ASAP.

It may be the grease, not fungus. But there is no liquid in the camera itself except the thermal grease under a cryo device and the liquid crystals in the viewfinder. The electrolyte in the battery is a thin plastic film and it is not liquid, and the thermal grease usually does not flow.
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Ulysses Paiva

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Re: bmcc 25k oily glass

PostThu Feb 18, 2016 12:21 pm

Anatoly Mashanov wrote:
Andrew Bell wrote:Be careful! This 'glass' can be a IR-cut filter with some kind of coating.


It IS a IR-cut filter and it HAS some kind of coating. The sensor also has some coating. And the fungus is known to etch the coating making lenses unusable so it should be cleaned ASAP.

It may be the grease, not fungus. But there is no liquid in the camera itself except the thermal grease under a cryo device and the liquid crystals in the viewfinder. The electrolyte in the battery is a thin plastic film and it is not liquid, and the thermal grease usually does not flow.



So, despite it looking like grease, as you said, its probably fungus?

I noticed that several months ago and never looked at it again since then. Dunno the actual situation as it still not affecting my image. At least not noticeable.
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Dustin Uy

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Re: bmcc 25k oily glass

PostFri Feb 19, 2016 2:52 am

mines out of warranty and having it cleaned by bmd singapore is gonna cost a lot for shipping. cleaning it would be hard as its in the turret sensor part which is sealed.

im coordinating with a local Philippine distributor and im having an annoying time figuring out how to deal with this repair.
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Anatoly Mashanov

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Re: bmcc 25k oily glass

PostFri Feb 19, 2016 3:45 am

I have no idea about construction of BMCC mount but according to the BMPCC photos I've seen I am 99% sure that it's NOT sealed. There is just the black (plastic?) mount body with front bayonet ring and a glass, a sensor board attached with some screws and a shim between the mount body and the sensor board.
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Dustin Uy

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Re: bmcc 25k oily glass

PostFri Feb 19, 2016 5:07 am

the muck is inside the glass. and the only way in is taking open the camera.
i tried to look around if the glass filter can be removed, it cant. i think its glued.

i read http://philipbloom.net/blog/infrared/ and its not similar. the rubber gasket is there but the glass is glued
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Dustin Uy

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Re: bmcc 25k oily glass

PostFri Feb 19, 2016 6:02 am

it doesnt look like fungus, is it? the growth is quite uniform unlike other fungal growth i know. :\
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Maheel R Perera

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Re: bmcc 25k oily glass

PostSat Feb 20, 2016 3:12 am

I had this problem with both my BMCC cameras. First camera (the very first batch of BMCC s) after warranty and the new camera (still 8 months old) during warranty (after about 6 months of usage). I had to send both to Singapore to get that cleaned. Contact Mr. Danny at BMD Singapore. He may be able to help you solve the problem.
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Adriano Oliveira

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Re: bmcc 25k oily glass

PostSun Feb 21, 2016 12:34 pm

I have the same problem in my Pocket.
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jussi rovanpera

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Re: bmcc 25k oily glass

PostSun Feb 21, 2016 1:44 pm

If it's fungus, it eats the glass coating, so removing the fungus doesn't help, because you still have a mark in the coating. So the only thing to do is to replace the glass.
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Anatoly Mashanov

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Re: bmcc 25k oily glass

PostSun Feb 21, 2016 2:14 pm

jussi rovanpera wrote:If it's fungus, it eats the glass coating, so removing the fungus doesn't help, because you still have a mark in the coating. So the only thing to do is to replace the glass.

I also thought that one of my lenses is doomed when I saw the thick layer of dirt, condensation and fungus. The cleaning liquid didn't help. I thought that the lens was to be repolished on resin and recoated which is quite difficult to do at home (use of chlorine gas to produce an ethyl silicate etc or etching the glass with acid) but the Russian National method - licking the lens nonstop during half a hour - returned the lens to the original bright and shiny condition. Then the only thing to do was to wash it and to apply a lot of cleaning liquid.
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John Greene

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Re: bmcc 25k oily glass

PostSun Feb 21, 2016 5:40 pm

it happen to all two Of my BMD Cams :|

viewtopic.php?f=2&t=44585
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Ulysses Paiva

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Re: bmcc 25k oily glass

PostSun Feb 21, 2016 10:58 pm

The question is: What to do?
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John Greene

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Re: bmcc 25k oily glass

PostTue Feb 23, 2016 1:58 am

Ulysses Paiva wrote:The question is: What to do?


it's sad, i happen to be on that same ship as you.
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Blaine Russom

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Re: bmcc 25k oily glass

PostTue Feb 23, 2016 2:25 am

I'm just curious.. do you guys live in humid climates? Have you guys took them to places where they will be exposed to humid weather? I'm really curious to know how that fungus got there in the first place...? Never seen anything like that on any of my gear, including any of my BMD hardware...
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Ulysses Paiva

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Re: bmcc 25k oily glass

PostTue Feb 23, 2016 5:02 pm

Blaine Russom wrote:I'm just curious.. do you guys live in humid climates? Have you guys took them to places where they will be exposed to humid weather? I'm really curious to know how that fungus got there in the first place...? Never seen anything like that on any of my gear, including any of my BMD hardware...



I dont believe thats tha case. In fact, here is hot like hell. The fact its not a uncomomm problem, makes me think even more about it...
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John Greene

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Re: bmcc 25k oily glass

PostTue Feb 23, 2016 6:01 pm

Can someone if anyone know where i can get this glass from?

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Mike Orbito

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Re: bmcc 25k oily glass

PostFri Mar 18, 2016 11:37 pm

It's happening to my pocket camera too. The camera gets quite hot during shoots, it could be melting something--glue maybe? I'll see if the residue loosens up when the camera heats up during my next shoot.
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Adriano Oliveira

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Re: bmcc 25k oily glass

PostMon Mar 28, 2016 3:59 am

I live in Brazil, so it is not possible to me to send my Pocket to repair.

So:

1) Is there a way to remove the IR glass, clean it and put it back?

2) If it is not possible to clean it, is it possible to buy a new one and replace it?
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Anatoly Mashanov

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Re: bmcc 25k oily glass

PostMon Mar 28, 2016 12:26 pm

Adriano Oliveira wrote:1) Is there a way to remove the IR glass, clean it and put it back?

Yes.


Remove the battery. Remove the front rubber beginning from the lens lock side. Remove the front screws. Pull the screen. Unlock 4 cables (screen, 2*buttons and lens control) and remove the screen. Remove the motherboard from the body (Warning! The sensor cable is SOLDERED to the boards). Unscrew, detach and remove the cryo device and heat pipes. Mark the upper side of the cryo device. Then unscrew the sensor board, inspect the sensor and keep it sensor down in some sealed box until needed.

It's possible (but I am not sure) that all the mount assembly can be extracted from the camera body. Also it may be useful to remove the lens control connector and cable. Also, it may be needed to remove the tripod nuts. Be careful since the motherboard is still powered with it's clock battery.

Now you can clean the glass. Use special means only. Clean the sensor if needed.

Assemble everything in reverse order, don't forget the shim, apply some computer thermal grease under the cryo device and heat pipes and be extremely careful not to damage the cable between the motherboard and sensor board. Mount the cryo device correct side up, or it would heat, not cool.

DISCLAIMER: 1) I never attempted it on BMPCC. I just have seen lots of photos and disassembled or damaged lots of similar equipment. You can find some problems that are not expected by me. 2) You lose all warranties.
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Anatoly Mashanov

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Re: bmcc 25k oily glass

PostTue Mar 29, 2016 1:23 am

My fault, it's BMCC, not BMPCC. The BMCC disassembly is similar EXCEPT that the BMCC sensor board is connected via the big fat connector, not soldered cable. So you can separate the boards without risk. There are lots of youtube clips about it.



https://forum.blackmagicdesign.com/viewtopic.php?f=2&t=33997
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Anatoly Mashanov

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Re: bmcc 25k oily glass

PostTue Mar 29, 2016 2:39 am

And the last: It's quite probable that the glass is accessible from the front by removing the bayonet ring and the mount, then removing the rubber ring that holds the glass and then the glass itself. Problems are: 1) I could not find any info about it, so it may be impossible and I am wrong; 2) To access it it's still needed to remove the lens control connector and it's ribbon cable which requires disassembly of the body.
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Walter Segundo

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Re: bmcc 25k oily glass

PostTue Apr 18, 2017 9:15 pm

Hi guys.

I have a BMPCC. Some strange dirt inside my sensor glass here too. Someone managed to clean it?

Tried to get it out from front side disassembly but even without the rubber ring the glass still fixed like it is glued in place.

If I have (or a service repair) to open it all the way to get the glass, the best will be replace the glass with a new one. Tried to contact BM by email about to buy a new glass but no response at all...

So if anyone can help I will be gratefull. Thanks anyway.
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Walter Segundo

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Re: bmcc 25k oily glass

PostSat Apr 22, 2017 10:56 pm

Hi again.

Posting just to say that BMD support already contacted me and my new sensor glass is on the way (i bought a new one).

For people that dont know how to change the sensor protective glass this video can help:

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Kingsley Paul

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Re: bmcc 25k oily glass

PostFri Jul 07, 2017 4:49 am

Frustrating experience with the bmpcc IR glass in which a streak of dirt has stubbornly got attached, tried cleaning without disassembling but no luck, Is there any way by which the glass can be accessed from the front, I dont want to go through the process of dissembling as it seems very risky. Any one having experience getting this resolved.
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Sill Chen

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Re: bmcc 25k oily glass

PostWed Sep 27, 2017 11:14 am

Hey guy, I have found the solution for this issue.

I own 2 BMPCC and both their IR Glass became foggy, must be the humid climate here in Malaysia.
Both warranty are expired, and it cost too much to send it to Singapore for repair.
There aren't really a "cheap" solution out there, so I am here to provide one.

First I remove the IR glass from the front by removing the "O-ring". No dissembling require.
The whole process is shown on Rawlite.com(or refer back to previous comment of a vimeo video)
The only tool you need is a Tweezer and Suction Pen.

However, those oily mark on the glass can't be clean off. I tried lens cleaning solution, alcohol & vinegar, no luck. The glasses become totally unusable.

The Solution : Purchase cheap IR Glass filter from China via Ebay (12$ for 2)

BMPCC Glass.jpg
BMPCC Glass.jpg (731.97 KiB) Viewed 336 times


On ebay I search "UV IR 26mm" ,there are only 3 matching result as I was searching.
26mm is the ideal size, 25mm can still fit but risk falling out when camera is shocked.
the thickness is 650nm, slightly thinner then the original Bmpcc glass.

If you have the budget, do buy the IR-cut + OLPF filter from RAWlite.com(350$+), consider it as an upgrade.

If you MUST use your camera before your replacement glass arrive, you can remove the glass to expose the sensor. Just be extra careful when you switch lens.

I haven't Color Grade my footage to check if there are any color distortion.
I am just glad that I can now use my BMPCC without breaking the bank.
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Adriano Oliveira

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Re: bmcc 25k oily glass

PostThu Oct 12, 2017 12:00 am

Hi Sill Chen,

Same problem here. My rubber o-ring needs to be replaced too, do you know its specifications? 26x1,5mm ; 26x2mm?

Thank you
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Ulysses Paiva

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Re: bmcc 25k oily glass

PostThu Oct 12, 2017 12:39 pm

Adriano Oliveira wrote:Hi Sill Chen,

Same problem here. My rubber o-ring needs to be replaced too, do you know its specifications? 26x1,5mm ; 26x2mm?

Thank you


Adriano, entra em contato com a Blackmagic e conversa direitinho com eles. Eles provavelmente vão te mandar uma peça de reposição, a um custo (não muito), desde que vc assuma toda a responsabilidade e, claro, eles não podem dar a garantia uma vez que não são eles que vão executar o serviço. Eu consegui o vidro/filtro IR deles e mais algumas peças de reposição nas 2 ou 3 vezes que eu precisei e expliquei como é complicado pra nós aqui do Brasil para enviar a camera.
Ulysses Paiva
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Adriano Oliveira

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Re: bmcc 25k oily glass

PostThu Oct 12, 2017 6:29 pm

Ulysses Paiva wrote: Adriano, entra em contato com a Blackmagic e conversa direitinho com eles...


Ulysses, fiz exatamente isso no ano passado e troquei o ir. Agora já ta manchando de novo. Entrei em contato com o suporte e aguardo resposta, mas tô querendo comprar uma quantidade maior no ebay. Acho que sai mais em conta, já que o problema persiste.

;)

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