02/03/2026 12:27 am
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So I finally grabbed the a7 IV after shooting with my old DSLR forever and honestly the eye autofocus is freaking me out in a good way lol its so sticky. But now Im looking at my lens options for this big headshot and portrait gig I have coming up in Austin next month and Im legit stuck.
My logic was to just grab the 85mm f1.4 GM because thats like the gold standard right? But then I started looking at the Sigma 85mm f1.4 DG DN Art and its way smaller and people say the sharpness is basically the same so now I dont know. I also keep hearing people rave about the 35mm 1.4 GM for environmental stuff and since I usually have about $1500 to $1800 to drop on this one lens I want to make sure I get the right vibe for the skin tones. I used to be a strictly 50mm guy but on this sensor I feel like I need something that really pushes that bokeh.
Then there is the 135mm GM which looks insane but might be way too long for the studio space I usually rent out. Does the Sigma actually keep up with the real-time tracking on the a7 IV as well as native glass or should I just stick to the Sony stuff? Im just overthinking it probably...
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02/03/2026 12:27 am
Unfortunately, the Sony FE 85mm f/1.4 GM is a disappointment compared to modern glass. I had issues with its outdated SSM motor failing to keep up with the real-time tracking on the a7 IV, which basically wastes your cameras potential. Its slow and loud. If you want to stay on a smarter budget without sacrificing technical specs, try these:
- Sigma 85mm f/1.4 DG DN Art - sharper than the GM with a much faster stepping motor.
- Sony FE 85mm f/1.8 - incredible value and actually focuses faster than most f1.4 glass.
- Samyang AF 85mm f/1.4 FE II - solid if you really need f1.4 on a budget. Honestly, paying $1800 for the 85mm GM right now is a bad financial move. The Sony FE 135mm f/1.8 GM has better XD linear motors but its unusable in tight studio spaces. Just grab the Sigma and keep the change.
12
02/03/2026 1:28 am
^ This. Also, i'm gonna go against the grain here and suggest that you dont necessarily need an 85mm to get that wow factor for your Austin gig. Since you mentioned being a 50mm guy, you should seriously look at the Sony FE 50mm f/1.2 GM before dropping cash on anything else. I know everyone raves about the 85mm or the Sony FE 135mm f/1.8 GM, but if your studio space is tight, that 135mm is gonna have you literally standing in the hallway trying to frame a shot. The 50mm 1.2 is honestly a masterpiece on the a7 IV. The background blur at f/1.2 is so creamy it rivals the 85mm look, but you get way more versatility. Ngl, the skin tones coming off the GM glass just feel a bit more finished out of the box compared to the Sigma 85mm f/1.4 DG DN Art which can sometimes lean a tiny bit yellow or green in my experience. The Sigma is great for the price, but if you have up to 1800 to spend, go native. The XD linear motors in the 50mm GM are silent and way stickier for eye AF than the stepping motors in third party glass. For a paid headshot gig, that peace of mind is worth the extra few hundred bucks. Just my two cents tho... dont overthink the gear too much or youll miss the best moments.
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02/03/2026 12:58 am
Building on the earlier suggestion, I actually think the Sigma 85mm f1.4 DG DN Art is your best bet tho.
- Faster response
- Lighter weight Swapped mine last year and never looked back.
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05/03/2026 7:53 am
If you're doing paid work in Austin, reliability is everything. The a7 IV is a great body, but you need glass that wont hunt during the shoot.
- Sigma 85mm f1.4 DG DN Art: This is technically excellent. The autofocus keeps up with real-time tracking for most situations. Its way lighter than the Sony and the sharpness is top-tier. Honestly, its the smart choice if you want to save cash, tho native glass feels slightly stickier in low light.
- Sony FE 50mm f1.2 GM: Since you were a 50mm guy, this is easily the best lens Sony makes right now. It hits your $1800 budget. The autofocus is significantly faster than the 85mm options and the skin tones are very clean.
- Sony FE 85mm f1.4 GM: This has a nice vibe, but the focus motors are dated. I wouldnt buy it new today when the Sigma is better or a Mark II is rumored.
- Sony FE 135mm f1.8 GM: Best bokeh in the lineup, but it might push your budget and if your studio is under 20 feet deep, you're gonna be backing into the wall. If tracking speed is the main concern, stick to the newer Sony glass with XD Linear motors. The 50mm 1.2 is basically the safest bet for that.
