It may just be a GAS attack but I am considering changing from my Nikon d7100 to a mirrorless in the near future. My two main reasons are that I hope to lighten and shrink my equipment even a small amount as it's getting harder to lug my d7100 and Tamron 18-400 lens around. I realize there will be some change in how I view my photography with a mirrorless and also that some lenses will be as big as what I have but between lugging the gear in the tank bag of my bike and jumping in and out of safari vehicles and walking through the brush I'm ready for a little relief. Second, I also find myself pushing the ISO in the d7100 for a lot of shots in very low light conditions and a lot of my pictures are very difficult to bring back from the snow factor when using high ISOs even with subscription Lightroom/Photoshop. My 50mm makes pushing possible but not enough for acceptable pictures.

Right now many reviewers are saying that the mirrorless Nikon Z6 is the best buy now but there are as many still sticking the the Sony a7III (both are at about the same price point). The Nikon attracts me because I'm used to Nikons. If I get the Z6 I'll also get the 24-70mm f4 lens for my general lens.

First Question: My two main lenses on my d7100 are the Tamron 18-400 and a Nikon 50mm 1.4 lens. Both are, I believe, for the crop sensor. So if I get the adapter for the Z6 will these work for me on the full frame Z6? I know they will increase the bulk when I need to use them but I will no longer need to use the 18-400 as a walk-around lens.

Second Question: Will I see low light improvement in the quality of my pictures with a mirrorless? (I understand that I am responsible for the content and getting the exposure factors right and I will always be working on that.) Low light performance is one of the things advertised about these full frame mirrorless cameras.

Last Question: Nikon vs. Sony--Will I have to do anything special with the FTZ cards, are they expensive and does anyone have experience with them?

If anyone has any other cameras in this range I'm open to suggestions. I'm not a pro and won't be but I do like trying to get good images that I can use in picture stories and other things but probably no huge prints.

Thanks for any thoughts. I will go to the local camera store tomorrow to see how each of these cameras feels to me and see what they say about my issues but I've been somewhat disappointed in their advice in the past which is why I'm posing this question.

Spending money is more fun when you don't have to do it. Recreational fisherman buy new boats more often then professionals, and go out every weekend hoping to catch a bigger fish. Golfers do the same and hope their score goes up ... I mean down. I believe that most everybody, outside of UHH, likes new things. One exception might be antique collectors, but they do spend money.

If photography is a hobby, you don't need to squeeze a dime out of every nickel. Just have fun as long as you can afford it.

Only a business needs to provide a monetary reason.

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