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Member Since 10 Aug 2006
Offline Last Active Yesterday, 10:03 AM

#397718 Removing scratches from a dome port

Posted by pbalves on 24 July 2018 - 07:18 AM

I do not know the lens, so I might be guessing...


The glass part, definitely cannot be recovered.


On the description of the lens that you made, it seems that the lens might have an acrylic element to correct aberrations from the glass lens. If this is the external part of the lens, theoretically you can polish it, but being an element of correction, the correction will be altered, and the final result won’t be so good as the lens was in new.


If it is too bad or if the loss is minimal, I do not know....


But if the lens "as is" is not usable, maybe you do not have too much to lose to try to polish it....

#397333 How to find a leak ?

Posted by pbalves on 12 July 2018 - 08:23 PM

Well, you can do what Tim has sugested (two or tree extra pumps after blinking green, and wait for 24h to check if it is realy a leak or the pressure being too close to the setpoint).

If the leak confirms, you can try to revert all the upgrades (puting in the original part),mount the acuum system and check the housing. And then placing all the other modifications one by one and test in between, to understand if the problem is in any of the elements.

#396171 Scratched glass

Posted by pbalves on 08 June 2018 - 07:29 AM

You might be able to get the scratch out of field of view (see scheme)


Attached Images

  • Field of view Schem.jpg

#396153 Scratched glass

Posted by pbalves on 07 June 2018 - 12:29 PM

The scratch is really close to the edge of the lens. If you manage to align the scratch with the top center or lower center position of the lens into the housing most probably you can get the scratch out of the field of view of the sensor and if so it does not mess with the pictures

#389635 Little Beach, Nelson Bay NSW

Posted by pbalves on 22 November 2017 - 02:44 PM

Very nice video. Lots of interesting behavior.

And interesting location. Lots of life.

#388931 Best Vacuum System for DSLR Housing

Posted by pbalves on 01 November 2017 - 03:05 AM

Leak Sentinel / Mico is the way to go!
I bought 2 systems from him.

One complete for a friends Ikelite housing (version 4). It works fine.

Another bought was a standalone valve and pump for my Aquatica housing. The Aquatica housing had the surveyor already, that is able to measure the change in the pressure, so I just needed to add a valve. I do not like the valves from Aquatica, backscater, ikelite, nauticam as all of them are on L shape or too bulky and it seams to me that it is more probable to get things stacked there.

Besides that, it is less expensive!

The surveyor from Aquatica is possible to be bought stand alone. It has the Benedict that also has a moisture alarm, signaling by light and by sound. The draw back is that you need to open the housing to activate the survival and then proceed with the test.

The leak sentinel allows you to activate it without opening the housing, and it allows you to make the test in the day before and switch off the sensor till the few moments before the dive, allowing some saving in the battery.

And Miso is very solicitous.

#376578 Dome port reflection?

Posted by pbalves on 31 August 2016 - 04:16 AM

I have bought it at Cameras Underwater
15 GBP

But you can find it on other stores (like bckscatter)

#376575 Dome port reflection?

Posted by pbalves on 31 August 2016 - 03:13 AM

I have bought the skirt already made.
(See Neoprene Light Blocking Mask on the link

#373482 Remote Strobe Trigger

Posted by pbalves on 10 May 2016 - 01:28 PM

The triggerfish has 2 versions: one with internal battery and another without internal battery.

The first is the newer version and allows to trigger sea and sea strobes. Inon strobes can be triggered by both versions.