Have to say that I don't see FF as being the most important thing. 90TS-E, absolutely. Lighting, absolutely. I don't think the body is as important, but that may just be me. After taking care of the important things, get whatever camera you can afford
Thank you for all of your informative replies.
Thanks Scatterbrained and timbop,
I have a set of Strobe lights, grips, diffusers in my home Studio. I'm pretty knowledgeable when it comes to lighting, I think.
Regarding the 90mm TS-E, I have a few questions please. Do you think a Tilt Shift lens is essential for Product photography or can Focus stacking software and Photoshop Transform do a decent job? I presume that not all kinds of Products need to be photographed with a Tilt shift lens or could it be the only lens I may need to use?
I have done an online course with a Pro recommending the 45mm TS-E, why is the 90mm preferable in your opinions?
Buying some decent glass was my next task alongside the camera choice.