For detailed insect and flower photography with your Sony a7 IV, the Sony FE 90mm f/2.8 Macro G OSS is highly recommended. It offers 1:1 magnification, exceptional sharpness, and fast autofocus. Its 90mm focal length provides a comfortable working distance, minimizing disturbance to subjects.

Ok so I've been shooting with the a7 IV for about a year now and I've tried most of these. If you want some really deep technical data, check out the Phillip Reeve blog or Dustin Abbott's site. They go deep into the long-term quirks of E-mount glass that you wont find in a quick store review. Since the usual suspects are already covered, here are two I've found useful for different reasons:

• Laowa 90mm f/2.8 2x Ultra Macro APO

Pros: If you want extreme close-ups, this is the king. It goes to 2:1 magnification while others only do 1:1. This is huge for tiny insects and the APO design keeps the colors and contrast really clean.
Cons: Its manual focus. For moving bugs, you'll have to get used to the rock-back-and-forth method since there is no AF to help you out.

• Sony FE 70-200mm f/4 Macro G OSS II

Pros: The autofocus is incredibly fast - much faster than the 90mm G. Its great for skittish subjects like butterflies where you need to keep some distance.
Cons: It only hits 0.5x magnification on its own, so you might feel limited for the tiny stuff. Honestly, for true 1:1 macro, even the best AF will hunt sometimes. I usually find that a good flash and diffuser setup makes a bigger difference for sharpness than the AF speed does in the long run.

For a more budget-friendly option, the Tamron 90mm f/2.8 Di III VXD offers great performance and 1:1 magnification at a significantly lower cost.

Can confirm this works. Did the same thing on mine and its been solid ever since.

Sigma 105mm f/2.8 Macro Art lens, I love this one. https://www.bhphotovideo.com/c/search?Ntt=Sigma+105mm+F2+8+Macro+mount&BI=8941&KBID=10361&SID=12345&DFF=d50

Ok so I realy agree with the point about checking technical data. Benchmarks are great, but field testing on the a7 IV is another thing entirely. If youre chasing fast moving insects, the way the lens communicates with the camera body is everything for your hit rate. After years of testing different glass, here is my take on the performance side:

• Native Sony glass is basically the gold standard for performance benchmarks. You just cant beat the way their own motors sync up with the AF tracking on the newer bodies.
• Pay more attention to focus motor speed than just pure sharpness in a lab. A sharp lens is useless if it cant lock onto a moving bee fast enough.
• Just stick with the high-end Sony stuff and you definately cant go wrong. Honestly, for the most reliable performance and fastest burst hit rate, the native brand glass is just built better for the a7 iv sensor tho.

Jumping in here to share some of my own experience! I spent the last summer obsessively tracking hoverflies with my a7 IV and it was such an amazing learning process. What I found most critical wasnt just the magnification, but how the lens handled the specific autofocus transitions of the camera body. I switched to my current setup specifically because I needed more working distance to avoid casting shadows on my subjects, and the difference was night and day!! One thing I learned through trial and error is that high-speed linear motors are a total game changer for insect photography. When you are working at 1:1 magnification, even a tiny gust of wind can throw your focus off, so having that snappy response is fantastic for maintaining sharpness. My success rate for handheld flower shots also skyrocketed once I started utilizing the internal stabilization features of the glass Im using now. It has been an incredible journey seeing those microscopic textures come to life, and I honestly think prioritizing the motor speed over raw sharpness was the best decision I made for my field kit!

Honestly searching for the perfect macro lens for the a7 IV drives me crazy sometimes. Youd think with all this tech, companies would make it easier, but it feels like a total scam how much they charge for decent glass these days. I've been looking at the technical specs and you gotta be so careful with third-party compatibility. It’s like these manufacturers dont even care if their autofocus actually keeps up with a twitchy dragonfly or if the firmware just craps out after a Sony update. I'm constantly worried that spending a fortune on a lens wont even guarantee it stays functional in two years when Sony decides to tweak their mount protocol again. Its honestly ridiculous how much we have to gamble just to get a sharp shot of a flower without the AF hunting like crazy. Plus the price creep is just insane... basically paying more for less reliability. Just make sure to double check those compatibility charts because some of these options are basically paperweights if the communication between the body and lens isnt 100% perfect. Really makes you wonder if they even test this stuff in the field.

Anyone uses manual focus lenses?