Lens Cleaning

Re: Lens Cleaning

Postby Brevet Cable on Tue 04 Jul 2017, 1:00 pm

Theoretically it's a DIY job, assuming it's only on the front element.
The reason I say theoretically is because it requires the removal of the front element to clean it.
How is the front element on the 100-400 attached ? Is it held in by several screws in the side of the body, or is it by a screw-in ring on the front of the lens ( the most common type ) ?
If the latter, it'll require a special tool - similar to a pair of vernier calipers - to unscrew it ( unless you feel lucky & use a long pair of pointy-nosed pliars ! )

There are plenty of youtube videos out there which will give you some idea of what's involved ( such as : https://www.youtube.com/watch?v=GKcb4ctZk7w )
It all depends how confident you are about doing this & how much the lens is worth, or how much a replacement will cost.
Meh !!
Not an enthusiast or a spotter
trollpikken fforwm swyddogol
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Brevet Cable

Re: Lens Cleaning

Postby flashman8 on Sun 16 Jul 2017, 9:54 am

cant see any real problem with them, apart for the dust bunny on the last one, your sensor will need a little clean. :wink:
Sony A700, A550, A350, Minolta 135, 500, Sigma 10-20, 400, Sony 18-70, 50,Tamron 17-50,70-300,90mm
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