A Small Talk About Close-Up Filters
There is a big overall misconception among photographers about the use and quality of Close-Up filters when used on their lenses.
I suppose a possible reason for the birth of this false impression happened after the release of some very cheap and obviously very low-quality close-up filters that came in the market (i.e. from Ebay, Aliexpress, etc), that provided rather terrible results.
As a professional photographer who works a lot with filters it is very important to remind that no matter how good your camera might be, even if it is the latest and pro-grade model of any brand, the quality of the lens(es) as also of the filter(s) that are in front of your camera sensor, will have a HUGE impact on the final image.
Let’s say in example that I use my new Nikon Z 7ii with my favorite Tokina opera 50mm, a combo that creates excellent, medium format like quality results, if I decide to use a cheap, low-quality filter in front of the lens (even if that would be a simple UV), the final image will have noticeable lower quality (softness, aberrations, etc) in comparison with an image taken with a high-quality filter.