Ive been shooting on my A7IV for a while and usually stick to my 24-70 GM II but I just started doing some high-end product work for a jeweler here in Seattle and the crops just arent looking as crisp as I expected. Thought the zooms had caught up to primes by now but guess i was wrong. I need something with absolute clinical sharpness to handle those tiny details.
- Budget: $1800 max
- Use case: Studio product shots and some lifestyle
- Preference: Sony native or Sigma Art
- Must resolve well for a future A7RV upgrade
Is the 50mm f1.2 GM the sharpest glass out there right now or is there a sleeper lens I'm missing?
I just sat down and saw this. Since you are looking at jewelry, you really want something with a 1:1 magnification ratio or you will be fighting those crops forever. I have been super satisfied with the Sony FE 90mm f/2.8 Macro G OSS for this exact kind of work. It resolves beautifully on higher megapixel sensors and honestly, you will save enough money to grab some high-end lighting too. Here is why it works so well:
- MTF curves are basically flat even toward the edges
- Physical aperture ring and focus limiter for faster studio workflows
- Way under your $1800 cap so you keep cash for a decent tripod If you dont mind manual focus for studio sets, the Voigtlander 65mm f/2 Macro APO-Lanthar is probably the sharpest glass I have ever tested. It is basically clinical and will handle that future A7RV sensor with no complaints at all.
Caught this thread a bit late but had to chime in. In my experience, when you're dealing with jewelry, standard primes-even the GM ones-can be a bit of a gamble because of the minimum focus distance. You'll end up cropping anyway and losing that resolution you're paying for. If you want absolute reliability, the Sony FE 90mm f/2.8 Macro G OSS has been my workhorse for years. It's clinical, maybe even a bit boring, but it resolves perfectly for those high-end crops. Like someone mentioned, the 50mm 1.2 is a beast, but for pure studio sharpness on a future A7RV, I'd actually point you toward the Sony FE 50mm f/1.4 GM instead. It's technically newer and some lab tests show it holding its own better at the edges. TL;DR: Go for the Sony FE 90mm f/2.8 Macro G OSS for the tiny details or the Sony FE 50mm f/1.4 GM if you dont need the macro close-up.
Honestly, if you're doing high-end jewelry, the Sony FE 50mm f/1.2 GM is a total beast, but it might not be the actual sharpest tool for tiny details because of the minimum focus distance. You're gonna end up cropping way too much and losing that detail anyway. For absolute clinical sharpness that wont break a sweat on an A7RV sensor, I'd look at the Sigma 105mm f/2.8 DG DN Macro Art. Macro lenses are basically designed for this exact scenario where every facet of a diamond needs to be tack sharp. I've used it for some small product stuff and it's kinda scary how much detail it picks up. It easily beats out most zooms and even some GM primes in the center. It's built specifically to resolve those tiny textures that usually get lost. TL;DR: Grab the Sigma 105mm f/2.8 DG DN Macro Art. It's sharper than the older Sony 90mm macro and handles those tiny jewelry details much better than a standard 50mm would.
