The Sony A7 IV's 33MP sensor and reliable real-time eye autofocus have changed what a typical shoot looks like coming out of the camera: fewer outright misses, but often more frames per moment because the 10fps burst habit is easy to lean on when you trust the autofocus to hold focus through the sequence. That shifts the culling problem from "find the sharp one" to "find the best one among several genuinely sharp ones." Here is a Sony A7 IV workflow built for that reality.
File Sizes at 33MP Lossless
Lossless compressed ARW on the A7 IV typically runs 35 to 45MB per frame depending on scene detail, noticeably larger than the A7 III's 24MP files but well short of the R5 or A7R V's 45 to 61MP range. A 10fps burst held for 2 to 3 seconds produces 20 to 30 frames and 1 to 1.3GB in a single sequence, which adds up fast across an event with dozens of such bursts. Shooting lossless compressed rather than uncompressed keeps this manageable without giving up meaningful quality for typical delivery sizes.
Burst Dedup for the 10fps Habit
Because eye-AF makes burst shooting reliable, it is tempting to hold the shutter through every moment rather than timing single frames. That is a reasonable trade for hit rate, but it means duplicate and near-duplicate grouping is no longer optional in the culling pass; it is the majority of the volume problem. A burst of 25 frames of the same handshake or first kiss usually collapses to 1 to 3 keepers once you actually compare them side by side, and doing that comparison manually, frame by frame, for dozens of bursts is where a culling session drags.
imagic's duplicate and burst detection groups near-identical frames automatically and surfaces the sharpest, best-exposed one per group, so the review becomes "confirm this pick" rather than "compare 25 frames by eye."
Eye Detection Means More Keepers, Not Fewer Frames to Sort
It is worth being direct about a common misconception: reliable eye-AF does not reduce how many frames you need to review, it increases how many of those frames are individually viable. Before consistent eye-AF, a burst might yield 2 or 3 sharp frames out of 20; with the A7 IV's tracking, it might yield 15 out of 20. That is good for image quality and bad for review speed unless the culling step is doing real comparative work, not just filtering out blur.
A Practical Session Order
- Run AI quality scoring and burst grouping across the full import first
- Within each burst group, let scoring surface the top pick by sharpness and eye state rather than reviewing all frames equally
- Do a manual pass only on the shortlist for expression and timing calls scoring cannot make
- Batch-edit the confirmed keepers by lighting segment, not the whole shoot at once
This order matters: doing manual review before automated grouping means re-deciding the same burst comparisons scoring would have handled instantly. See Cull 1,000 Photos in 30 Minutes With AI for the time math on volume like this.
Where imagic Fits an A7 IV Workflow
imagic reads ARW natively, runs AI culling and burst/duplicate grouping locally at every tier including the free trial, and processes through its own built-in RAW engine with nothing uploaded. See the Sony A7 IV camera page and the ARW format page, or Sony ARW Files: Free Processing for format-level detail.
Frequently asked questions
Why does eye-AF make culling take longer, not shorter?
Because more frames per burst are individually sharp and usable, so the decision shifts from rejecting blur to comparing genuinely close options, which is a harder manual task than a simple pass or fail.
What ARW setting should I shoot on the A7 IV for weddings or events?
Lossless compressed is a solid default: real quality with meaningfully smaller files than uncompressed, which matters across a high-burst event day.
Does duplicate detection risk removing a good frame from a burst?
Good implementations flag and group rather than delete, so you confirm the top pick per group rather than losing frames automatically. Review the group before moving on if a burst has multiple genuinely different expressions worth keeping.
Try imagic free for 7 days, no card required, AI culling and burst detection included from the first shoot. Start the free trial.