A director or DP planning a shot rarely thinks of themselves as choosing a VFX workflow. They’re choosing where to put the camera, how it moves, what’s in frame. The VFX workflow that follows is a downstream consequence of those choices — and the difference between a 2D solution, a 2.5D solution, and a 3D solution can change the cost of the shot by an order of magnitude.
The decision isn’t usually made consciously. The on-set choices about camera movement and framing make the decision for you, and the VFX team works with what they’re given. By the time the conversation about cost happens, the workflow is already locked.
This post is for the people on set making those choices. Not so you can do the VFX work yourselves, but so you can recognize when a small change in framing, camera move, or shot design moves the post-production work between the three workflows. The earlier you see that, the cheaper the project gets.
The Three Workflows in One Paragraph Each
2D: Everything happens in the flat plane of the image. Tracked cards, projections, paint, color work. The camera can move, but only in ways that don’t reveal the flatness — slow drifts, locked-off shots, careful pans. 2D is fast, predictable, and cheap.
3D: Everything happens in three-dimensional space. CG elements, full camera tracking, geometry that can be lit and rendered from any angle. The camera can do anything because the scene exists in 3D. 3D is expensive, slow, and flexible.
2.5D: A hybrid. The shot is mostly 2D — flat elements composed in the image plane — but with depth information added so the camera can move in limited 3D ways. Projections onto cards, parallax extracted from the plate, depth maps from CG renders. 2.5D is a compromise between the cost of 2D and the flexibility of 3D.
The difference between these isn’t software or technique. It’s the camera move and the shot design. A locked-off shot can be 2D. A shot that moves through space has to be 3D — or 2.5D if the move is limited.
The Cost Multiplier
A 2D shot at average complexity sits at the baseline. A 2.5D shot at the same complexity is meaningfully more expensive. A 3D shot at the same complexity climbs further still — often by an order of magnitude. The exact multiplier varies by project and methodology, but the climb is real and consistent across the industry.
Why the cost climbs so steeply: each workflow requires more of the shot to be reconstructed. 2D works with the plate as it was shot. 2.5D extracts depth from the plate or adds it via projection — more steps, more time. 3D rebuilds the scene in three-dimensional space, with matchmove for the camera, 3D CGI for the assets, lighting that has to match the plate, and rendering passes that have to integrate cleanly in comp. Each layer is more labor and more risk.
When a director sees that a small camera move pushed a shot from 2D into 2.5D or from 2.5D into 3D, the cost implication is real. Not always large enough to change the directorial choice — sometimes the camera move is the shot, and 3D is the right workflow. But knowing the cost is part of making the choice consciously.
When 2D Is the Right Workflow
A shot is a candidate for 2D when the camera does any of the following:
- Locked off (no movement at all)
- Slow drift (small, slow translation that doesn’t reveal parallax)
- Pure pan or tilt (rotation around the camera’s optical axis, with no translation)
- Slow zoom (focal length change, no translation)
In these cases, the entire shot can be treated as a flat image with elements composited into the plane. Sky replacements, screen replacements, simple set extensions, beauty work, color treatments — all of these are 2D candidates when the camera move allows.
The benefit of 2D isn’t just lower cost. It’s faster turnaround and lower risk. 2D shots iterate faster because there are fewer dependencies. A 2D sky replacement gets one creative review and one technical pass. A 3D sky replacement needs the matchmove to be locked, the geometry to be built, the lighting to match, and the renders to integrate — every layer is a place where the shot can fail in review.
When a DP can frame a shot to allow a 2D solution — and the director’s vision still works — that’s a free cost saving on every shot you do it for.
When 2.5D Is the Right Workflow
A shot is a candidate for 2.5D when the camera moves in ways that reveal a small amount of parallax, but not so much that full 3D is required. Common scenarios:
- Push-in or pull-back through a static scene (the camera moves toward or away from the subjects, but doesn’t translate sideways significantly)
- Slow handheld with a static or near-static framing
- Crane moves that are limited in range
2.5D extracts depth from the plate (using disparity from a stereo capture, or analysis of the existing footage) and projects the elements onto cards at different depths in 3D space. The camera moves through the depth, but the elements themselves don’t have to be reconstructed in full 3D.
The result is a shot that has the depth feel of 3D at a fraction of the cost. The trade-off is that 2.5D doesn’t hold up under aggressive camera moves. If the camera translates significantly, the 2.5D illusion breaks — flat cards reveal themselves as flat. The technique works for limited moves, not for free-roaming cameras.
A producer planning a shot at the borderline of 2.5D and 3D should have the conversation with the VFX team early. Sometimes a slight reframing of the camera move keeps the shot in 2.5D and saves significant cost. Sometimes the director’s vision genuinely requires 3D, and the team budgets accordingly.
When 3D Is the Right Workflow
3D is the only viable workflow when:
- The camera moves significantly through space. Translation, rotation, free movement, gimbal moves, vehicle-mounted cameras — anything that gives the audience a strong sense of the camera occupying a 3D environment.
- CG assets must be lit and viewed from multiple angles. A hero CG character, a digital double, a CG vehicle, a CG environment that the camera moves through.
- The shot requires interaction between live action and CG. A character holding a CG object, a CG element occluding live action, a CG explosion that affects the live-action lighting.
- The scene has to be built from scratch. Full CG environments, fantasy or sci-fi worlds, scenes that couldn’t be filmed at all.
In these cases, 3D is the workflow. There’s no cheaper alternative that produces an equivalent result. The cost is real, but the cost reflects the work the shot actually requires.
What sometimes happens in budget-constrained productions: a shot is described in a way that sounds 3D, but the director would actually accept a 2D or 2.5D version if it were proposed. The team designs in 3D, the cost balloons, and the production discovers the 3D was unnecessary only after the bid lands. The conversation with the VFX team during pre-production catches this if it happens early.
The Decision Gets Made on Set, Not in Post
The most important thing for a director or DP to understand is that the workflow choice happens on the day, not in post-production. The camera move is locked when you call action. The framing is locked when the shot is composed. The lighting is locked when the gaffer’s plot goes up. By the time the footage reaches the VFX team, the choice has been made — and the VFX team is working with what’s there, not designing the optimal approach.
A small change in pre-production can save weeks of work in post:
- A camera move that drifts slightly less can move a shot from 2.5D to 2D.
- A pan instead of a translation can keep a shot in 2D.
- A locked-off second pass for the VFX work, alongside the camera-moving creative pass, can give the team a clean plate to work with.
- A 3D camera move that’s storyboarded in advance can let the VFX team budget for matchmove from day one, instead of discovering the requirement late.
The VFX team can’t make these decisions for you. They can flag them, talk through the options, and give you the cost implications. But the decision lives with the director and DP, on the day, while the camera is rolling.
The Pre-Production Conversation That Saves Money
The cheapest version of this conversation happens before the shoot, with the VFX team in the room. A read-through of the storyboard or shot list, with the team flagging shots that are at the borderline between workflows. Each flag is an opportunity to reconsider — sometimes the director’s vision pushes through, sometimes a small adjustment keeps the shot in a cheaper workflow.
The most expensive version of this conversation happens in post-production, after the shoot, when the team is reviewing dailies and discovering that a shot the director thought would be a simple comp turned out to require full 3D because of a camera move that wasn’t planned around. By that point, the cost is what it is.
Productions that run smoothly on VFX-heavy work are the ones where this conversation happened early. Pre-production reviews with the VFX team aren’t bureaucracy. They’re the cheapest cost-control available.
How FXiation Digitals Joins the Conversation
We participate in pre-production reviews when the project schedule allows for it. A read-through of the shot list with our compositing, matchmove, and 3D CGI leads typically surfaces real savings on the production — by flagging shots where a small adjustment moves the workflow into a cheaper tier. The exact savings vary by project, but the conversation is rarely zero.
Sometimes the savings come from changing a camera move slightly. Sometimes they come from capturing a clean plate or a separate locked-off pass. Sometimes they come from realizing a shot the director described as “VFX-heavy” can actually be solved in a way the director didn’t know existed.
If you’re in pre-production on a VFX-heavy project and want a workflow review on the shot list before you shoot, reach out. The conversation costs nothing and consistently changes how productions budget VFX. We’d rather catch the workflow choices early — when they’re still flexible — than budget them in post when they’re locked.
Common Questions