My gear list speaks to what I own. Lately I have been starting to photograph insects as I walk around my yard. Although I do own two macro lenses, 90mm and 150mm, for these walks I prefer a zoom.
I hadn't used my 70-300mm DX lens since I bought a 100-400mm. Some recent threads had me considering, briefly, getting the 70-300mm FX lens. A comparison showed that a FX70-300mm falls between the 100-400mm and the DX 70-300mm in terms of weight and closest focusing distance.
I did some stagnant tests with both lens that I already have, with and without a 20mm extension tube. I then went back out side. I "think" I might have cured myself. For the times when my hands really hurt, the lighter weight of the DX70-300 helps.

100-400mm

70-300mm DX with 20mm ET
I hadn't used my 70-300mm DX lens since I bought a 100-400mm. Some recent threads had me considering, briefly, getting the 70-300mm FX lens. A comparison showed that a FX70-300mm falls between the 100-400mm and the DX 70-300mm in terms of weight and closest focusing distance.
I did some stagnant tests with both lens that I already have, with and without a 20mm extension tube. I then went back out side. I "think" I might have cured myself. For the times when my hands really hurt, the lighter weight of the DX70-300 helps.

100-400mm

70-300mm DX with 20mm ET
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