How to Evaluate a Used Lens
A used lens can be a great way to save some money on an essential piece of gear. Like any used item though,중고렌즈 it is important to check the lens thoroughly before buying to make sure that you are not getting ripped off. The good news is that there are more honest and decent people selling their used gear than tricksters and thieves, and a bit of knowledge will help you to recognise the bad lenses before handing over any cash.
There are a few easy tests that you can carry out to evaluate whether a lens is worth the price you are paying for it. The first is to look at it visually and examine the elements for signs of damage, especially scratches or marks on the glass. It is also a good idea to shine a light through the lens and look at it wide open against a white wall or other background, this will help to show up any dust, fungus or even bugs stuck inside the barrel.
The next step is to take a few test photographs of the lens to check for sharpness and contrast. This is a good opportunity to ask the seller any questions you might have about the lens, such as why they are selling it, or if there has ever been a problem with it. If there is a problem, it is better to be open about it at the time of sale, so that you can negotiate a refund or return.중고카메라판매
It is also a good idea to ask the seller if they will allow you to mount the lens on a camera body to see how it works. If not, this could be a sign of a problem that they are trying to hide from you.
Another thing to do is to set the camera to use the centre autofocus point, and in a good light, focus on something close up, then off into the distance, and back again. This will help to check that the lens is working correctly and that it can autofocus.
If you can, try to buy the used lens in-person if at all possible. This will give you the opportunity to inspect it, physically hold it and put it on a camera, and to test the focus and zoom functions. It will also be a much safer transaction, as you will be dealing with someone who you know and trust, and who will not be trying to conceal any hidden issues.
If you can’t purchase it in person, the behemoth of online retailers, Amazon, does have a used lens section and will usually have the lowest prices (although not as low as a private seller). Another option is Wex Photo Video, who are UK-based, ship worldwide and offer a 3-day no-questions-asked return policy on all products.