Jump to content

Cleaning water spots off lenses

Recommended Posts

I have a number of lenses for my a550 but I get a number of water spots when shooting with my el cheapo Sony SAL1855. I think I have narrowed it down to that lens but have tried cleaning the front of the lens and both sides of the clear filter and the spots seem to continue. I'm afraid to clean the inner part of the lens and wouldn't know how to clean inside the camera on the mirror or whatever. Any suggestions.

Link to post
Share on other sites

Guest Jaf-Photo

So, the spots show in the pictures? The it's most likely dust (or specks) on the sensor or rear element of the lens. Try a rubber blower first but if that doesn't help, wet cleaning is the next step. There are good sensor cleaning kits with swabs and liquid available in camera stores or online.

Link to post
Share on other sites

  • 1 year later...

I've got a bit of a sensor cleaning problem.

I've used a wet cleaning kit several times aready but there are some areas of dirt clearly encrusted on the surface of the sensor. They always show up in images with apertures of around f11 or smaller.

Do you have any thoughts on getting rid of them?

Link to post
Share on other sites

  • 3 weeks later...
Guest Jaf-Photo

Sensor cleaning in camera stores differs depending on who does it. Sometimes, they are no better than you and take less care.


It's not difficult to do as long as you think through the process before you start.


It's true hat the better advice is to avoid dirtying the sensor but accidents do happen. If you have a set of swabs and liquid, you can fix the problem in five minutes.


Do check the back of your lens OP. Spots on the rear element are more visible in the pictures than spots on the front element.

Link to post
Share on other sites

I would not like to clean the mirror myself other than with air. It has

a risk to scratch or other problems. You would better sent it to Nikon.


I doubt that Nikon would clean a Sony, but ... fear not !  

The a550 is not only not a Nikon, it is also not an SLT.

It has some weird live view features, but it is basically

just a regular flip-mirror SLR.   


The mirror is the SAFEST thing you can clean in your 

SLR body. Lenses are fairly safe but, like sensors, they 

are involved in forming your images. The mirror in an 

SLR does NOT form your images, and sometimes has

a few "scratches" engineered right into it. Not actually 

careless scratches, but mirrors have historically had a 

variety of grooves, grids, etc built into them that would 

really mess up your images if the mirror were involved  

in forming your images. 


If you put a minor scratch on a mirror it's diddley squat.   


The REAL danger in cleaning a mirror is that if you use 

too much force, you may misalign it, and your focus will

be inaccurate.   


OTOH, just as scratches on the mirror are meaningless 

so also is any minor dirt, so there's seldom any reason  

to clean an SLR mirror.   




OTOOH if you have a Sony SLT mirror, that is a waaay 

different kettle of fish. Verrrry risky ! An SLT mirror IS

in the image forming path. 







Link to post
Share on other sites

  • 1 month later...

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Posts

    • Shot in SD with Sony a7ll.

      Welcome, dear visitor! As registered member you'd see an image here…

      Simply register for free here – We are always happy to welcome new members!

    • Hello, I wanted to share the set up for tracked panoramas that I am currently using, wich is based on the use of two two way head from Sunway: the DT-03 and the DT-03R. Both heads are very steady. They are made up of two parts: 1) a 360º graduated rotating/panoramic base with a bidirectional tilt central body (adjustable with two locking levers), and 2) an upper part that, in the case of the DT-03, it is a clamp quick release plate and, in the case of the DT-03, it is a graduated panoramic screw-on rotating head, both compatible with the Arca Swiss system. These upper parts are removable and, therefore, can be replaced by other standard rotating jaws type IRC-64, or by other indexed ones. As I said, I use one of them, the DT-03, as an equatorial wedge, placed directly on the tripod or on a leveling base. Its quick release head with clamp allows me to quickly place the tracker on top and be able to align easily. To align it, I loosen one of the central pins of the kneecap a little, and leave the other loose. This way I can safely achieve the degree of inclination of the tracker that I want. That, combined with the 360º rotating base that the head has, is an excellent option for precise and fast alignment. Then I place the DT-03R on top of the tracker, and use it as a panoramic flat base on which I mount an L-plate combined with a rotating clamp. On these last accessories I place the camera, ready to shoot, being able to move it both in the horizontal and vertical axis. The DT-03R screwed to the tracker allows me to have a solid flat and rotating base on which to pan without losing horizontality and, at the same time, I can compensate for the rotation of the tracker thanks to its base, which also rotates 360º. So the set up is as follows: Both This is what I use: Tripod Leveling base (optional) Sunway DT-03 two way head as a wedge Star tracker from Move Shoot Move Nomad Sunway DT-03R as a leveled base L bracket 360º rotatory arca swiss head Here I share some photos of the set up; I hope it helps:     View: original size View: original size View: original size You can find them in the Sunwayphoto website. You can also see down below some of the photos that I took with this set up: View: original size View: original size View: original size @mallorca_landscapephotography
    • My problem may be related to yours or maybe this should be a separate thread. My (used) A1 has always (1-year) had minor play in lens/mount snugness but no issues. Then, two days ago when I turned on the camera, it did not recognize the already mounted lens, did not display the F-stop and would not autofocus. The contacts look normal.  I cleaned them contacts, remounted the lens multiple times, tried my four other ff lenses (Sony 20, 90, 70-200, 200-600) but nothing changed. I also tried shifting the small play in the mount. Nothing helped yesterday but today shifting the lens reproduces the problem very clearly; a very slight turn of the lens and behavior is normal or it is not (no autofocus, no F-stop display). One time it showed the message lens is not properly attached. The looseness is not in/out but rotational and very slight, though noticeable.  Sorry for lengthy description. Any ideas would be appreciated.
  • Topics

  • Create New...