24/03/2026 6:11 pm
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What is actually the best 85mm lens for the Sony a7 IV right now if I want that creamy bokeh but dont want to break my back or my bank account?
Ive been looking at a ton of reviews and Im honestly more confused than when I started. Im doing a huge graduation shoot for my cousin and a few of her friends in downtown Chicago next month and I really want to step up my portrait game. Right now Im just using a standard zoom and its fine but it doesnt give me that pro look with the blurry backgrounds Im after.
I keep seeing the Sigma 85mm f1.4 DG DN Art being called the king of 85s for E-mount. It looks amazing in sample shots but I read some people complaining about the pincushion distortion that you have to fix in post, and also its apparently pretty heavy? Im gonna be walking around the city for like 4 or 5 hours straight so I dont want something that feels like a brick. Then theres the Sony 85mm f1.8 which is way cheaper and lighter, but some forum posts say the autofocus isnt as snappy on the newer bodies like the a7 IV compared to the newer glass. Is that actually true or just people being gear snobs?
My budget is around $1100 at the absolute most, but honestly if I could get away with spending $600 on the Sony f1.8 and use the rest for a nice flash or a trip somewhere that would be great. My main priorities are:
- Super sharp eye autofocus performance
- Not too heavy for a long day walking through the city
- Really soft background blur for that pro look
- Reliable enough for a paid graduation shoot
I also see people talking about the Samyang 85mm II and that just adds another layer of confusion for me. I need to make a decision by next week so I can get some practice time in before the big shoot. Does the Sigma autofocus actually keep up with the Eye-AF on the a7 IV as well as native Sony glass does or am I gonna regret not getting a GM? I cant really justify the $1800 for the Sony GM though so maybe thats out of the question anyway...
3 Answers
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24/03/2026 6:31 pm
Building on the earlier suggestion, I really think you should take a closer look at the Samyang AF 85mm f1.4 FE II. People get nervous about third-party glass, but this specific Mark II version is a massive upgrade over the original and it fits your budget perfectly. Heres the technical breakdown for your specific situation:
- Eye-AF Performance: The Sony FE 85mm f1.8 is definitely fast enough, dont let gear snobs tell you otherwise. But the Samyang II is surprisingly sticky with the a7 IV tracking. You wont notice a massive difference in hit rate for portraits unless your subjects are literally sprinting.
- Bokeh Quality: This is where you actually see the price difference. The f1.8 Sony can get a bit nervous and busy in the background sometimes. If you want that creamy, melt-away look for those graduation shots, the f1.4 on the Samyang or the Sigma 85mm f1.4 DG DN Art is just superior.
- Weight: The Sigma is a beast. Truly an amazing lens, but walking around downtown for 5 hours? Youll definitely feel that brick. The Samyang is way lighter (around 595g) which is basically the sweet spot for a long day of shooting. Ngl, the pincushion distortion on the Sigma is a non-issue because the camera corrects it automatically anyway. But if you want to save money for a decent flash like the Sony HVL-F46RM, the Samyang is the most logical middle ground. It gives you that high-end look for a fraction of the GM price. Just make sure you get the Mark II version specifically tho... the first one had some weird AF issues.
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24/03/2026 7:16 pm
> I keep seeing the Sigma 85mm f1.4 DG DN Art being called the king ^ This. Also, I used the Sigma 85mm f1.4 DG DN Art for a marathon shoot recently. The stepper motor is flawless and distortion is auto-corrected anyway. Im really satisfied with it tho.
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24/03/2026 6:11 pm
Ive been really satisfied with the lighter f1.8 primes on my a7 IV. Seriously, dont fall into the trap of thinking you need a massive f1.4 lens for a pro look. My big warning is to stay away from the older heavy glass. Carrying a brick around downtown Chicago for five hours will ruin your day, and the autofocus on those older models usually struggles with eye tracking.
