Food for thought...
PhotoGuy you may have the cart before the horse.
Indoor gyms are notoriously bad venues with terrible illumination...
Learn your craft well in bright daylight before migrating into a dungeon...

Once you're adept at shooting in daylight then maybe you'll forget about beating yourself up in gyms.
That said, for indoor venues you are looking at a fast f/1.4 lens to allow your focus sensors enough ambient to lock instantly... Most commercial shooters use a body like the D500, D3s, D4, D5 so they can spray and pray their way to an occasional decent razor sharp composition...

Your journey is likely light-years away from commercial publication quality indoor gym sports imagery.
Please start with daylight Baseball or Softball where you can lock on the pitcher, and/or pan with the infielders. Remember no ball? No image... Word!

I shoot league soccer and even in bright daylight that is a serious challenge.

Be happy shooting the kit you have in bright daylight... It typically takes years to master sports/action.
If you insist on working indoor gyms you'll need an AF 85mm f/1.4 and credentials to shoot adjacent to the court. btw, VR, OS and IS are virtually useless in this scenario... Look seriously at a D500 w/ an AF 85mm f/1.4 (The "D" variant will work here and is more cost effective)

Wish you much joy on you journey PhotoGuy

Hello everyone

I am not a professional photographer, and have a lot to learn. That being said, I have sold a number of pictures over the last years by being lucky. But I have been having more problems than usual lately, and while I have a pretty good average of my pictures accepted by photo agencies, more lately have been not accepted than in the past. I have taken a much more critical look at my pictures lately, and am not happy with them. I feel it is time I learned to step up to a new level. Lately, the pictures have seemed noisier than usual, need more sharpening, which seems to increase noise, and when viewed on a 70 inch tv at 100% I see some color fringing, usually white or grey, around the limbs of trees and such. I am using a mirrorless camera with a professional 24-105 lens. I never used to notice this, but I do now. Getting rid of that fringe could take me a lot of time if I could do it at all. Especially around numerous tree branches. I am submitting a picture that I hope that those who have the time can give me severe criticism of the following picture, and/or suggestions for improvement. I realize that that does take time for people to do, and I do appreciate it.

Anyway, I wonder what criticisms can be thrown at this particular picture. It looks much brighter on my tv than on my pc, so I have darkened it some. I have, to a small amount decolored it as well, but not too much. I also cropped in on the bottom just a little due to a wall I thought was just a little distracting.

Any help would be appreciated.