It only takes a short while for the bump matieral to start to grow back.Ī long term consequence of a normal CLA is severe damage to the shutter. The bump material reforms and when it does the cuts split open. This not only ruins the back leather and cuts the market value of the camera body in half, it is totally useless. You can see how the perfectly good back leather over the bumps has been cut so that the bump material can be removed. It's a picture of what remains after the pure camera butchery of the normally practised procedure for Zeiss bump removal: The rest of the lens was left filthy dirty and this includes the lens elements themselves which had the start of mold growth. The only work performed that constituted a complete CLA for this lens was to clean the visible oil off of the aperture blades and wipe off the visible exterior parts. You can see for yourself what I found when I disassembled this lens.
The owner contacted me to ask if I could correct the stickiness of the aperture control feel. He performed a CLA on this lens and returned it to its owner. This lens was sent to a person in the camera industry whose reputation is so great I will not mention it for obvious reasons. The rest of the interior of the lens is in the same condition and this explains the stickiness of the aperture control feel. This dirt is fifty years accumulation of finger oil, aperture control grease and dirt. As you can see it is fility dirty below the area which would be visible when the lens is assembled. It is of the aperture control ring of a Contax Carl Zeiss 50 mm f 2.0 Sonnar lens that has been removed from its lens mount. The following picture sums up my experience with what CLA really means. If you are allergic or if you can develop an allergy, handling a camera such as this is one sure way to stimulate an attack of hives, hay fever or asthma: If the CLA you obtain for your camera does not specifically include a body shell cleaning the body shell will not be cleaned and this is what you are going to be putting up against your face. The inside of many old Contax cameras is coated with mold and bacteria as thickly as is this one. The white deposit that is visible coating the insides and forming a little ball in the upper right hand corner is mold. This is a picture of the inside of the body shell of a Contax IIa camera as it was when it was first opened here.
The question is clean what and how, lubricate with what and how, and adjust what? The answers will vary from shop to shop and from person to person and to sum it all up from my experience CLA means "as little work as possible" for as much money as possible. The acronmy "CLA" means, clean lubricate and adjust, but it is more of a question than an answer. I know this is hard to believe, but there is no industry standard or specification of any kind that sets out what a CLA is supposed to be or consist of.
0 kommentar(er)
