07-15-2021 04:43 PM
Are you sure you need both a polarizer on the lens as well as polarizer sheets/gels on your lights? While that can lead to some very creative style of photography with certain plastics, I think you only need one or the other to remove glare/reflections from what you're photographing.
07-15-2021 04:51 PM
In terms of blur... if you choose to manually focus, that can be very tricky. I would recommend using autofocus so you can concentrate on other aspects.
What specific lens are you using? If you are close to your subject and using a wider aperature (e.g. f/2.8, f/3.5), then what is in focus can be very narrow. For certain camera/lens combinations, it can be extremely narrow as in a few millimeters. So things in front of and behind that will go out of focus. You tend to see this in portraits where the eyes will be in focus, but the tip of the nose and then the ears will be out of focus.
In your case, if the tattoo is on a flat part of the body, that shouldn't be an issue. But for an arm where the tattoo would wrap around, you'll need to ensure you have wider depth of field. One way to do that is the close down the aperture (higher f-stop numbers like f/8.
Another way to get deeper depth of field is to use wider angle lenses. However, they tend to distort things if not careful. I image you want to showcase your artwork as it appears in real life as much as possible. If your lens has telephoto capability, perhaps move back from your subject as much as possible, then zoom the lens in as much as possible. Especially with a narrower aperture and your subject now being further away, that should keep more things all in focus.
07-15-2021 05:00 PM
I hope all your filters and gels are circularly polarized. Linearly polarized light can wreak havoc with exposure and focus because of the mirrors involved.
07-20-2021 12:05 PM
07-22-2021 09:56 AM
"... put a light fixture behind the subject to illuminate the background slightly."
This not only will not help, it may make things worse so don't do it. Sometimes we try to out think the camera and sometimes the camera is smarter then we are. Get rid of all the gadgets and attachments. Set the M50 to P mode and the lens to AF Give that a try.
I assume the room you are shooting in is reasonably lighted? If not increase the ambient light as much as you can. Forget flash for now. Flash isn't a beginner thing or easy to set up correctly.