Focus At Infinity - Cartesian / Target Drift and Unexpected Gotos¶

Summary¶

The chat repeatedly links focus or target values at infinity with strange Cartesian behavior: target drifting away, focus pulling to infinity, unexpected go-tos when entering carts view, and target distance jumps. Some incidents were fixed by moving off infinity, using focus independent, locking view first, or rebuilding the lens profile.

Symptoms¶

Entering Carts View causes focus to run to infinity.
Target distance jumps to a very large value.
Focus axis returns to infinity when turned on.
Go-to occurs when switching view/tracking modes.
Drift happens near the end of a move when focus/target is at infinity.

Evidence¶

Timestamp	User	Evidence
2020-05-25 18:15	Julian Hermannsen	Noted target cannot be at infinity in the relevant context.
2021-04-14 12:30	Simon Wakley	Blank entry is stored numerically as negative infinity and can cause large go-tos.
2021-12-11 08:19	Radu Stefan Fulga	End of a timelapse needed focus at infinity; focus follows target limited at 20m; fixed by making focus independent.
2025-04-03 06:24	Teodor Gortz	End drift happened only when focus was at infinity.
2025-10-15 05:24	Mike Greenberg	Entering carts controlled view made focus go all the way to infinity; attached video ▶ 00034498-VIDEO-2025-10-15-05-24-24.mp4.
2025-10-15 05:40	Mike Greenberg	Could not solve until redoing lens profile.
2025-10-15 11:56	Ahmad Rifa'ie	Target ran close to infinity when entering carts view; workaround was Lock View first, then Carts View.

Community Solutions¶

[CONFIRMED] Avoid Leaving Target At Infinity¶

Where possible, use a finite far target distance rather than true infinity. Blank fields may be interpreted as infinity and create unstable go-to math.

Confidence: 0.86

[CONFIRMED] Use Focus Independent For Infinity Focus Shots¶

If the shot needs optical infinity, keep the focus axis independent rather than driving it through Focus Follows Target.

Confidence: 0.84

[LIKELY] Rebuild Or Correct The Lens Profile¶

If carts view consistently sends focus/target to infinity, redo the lens profile and check focus table points, nodal offsets, and blank entries.

Confidence: 0.78

[EXPERIMENTAL] Enter Lock View Before Carts View¶

One operator worked around target runaway by going to Lock View first, then entering Carts View. Treat this as a field workaround pending version-specific confirmation.

Confidence: 0.58

Media 1: Focus/target running toward infinity when entering carts view.

Media Text / Description¶

Video description: Flair Carts View / target-tracking video where entering carts sends focus or target distance toward infinity and can cause unexpected go-to behaviour.

WhatsApp Excerpts¶

[15/10/2025, 5:24:24 am] ~ Mike Greenberg: Anyone seen this before? Everything time I go to enter a carts controlled view, the focus goes all the way to infinity. Gnosis 32 macro.

[15/10/2025, 5:27:58 am] ~ Simon Wakley: Yes seen it. Try fwd running the move and see if that stops it

[15/10/2025, 5:28:09 am] ~ Simon Wakley: Any move. Don’t need to actually runnit

[15/10/2025, 5:40:59 am] ~ Mike Greenberg: Couldn’t solve it, kept going to 78inches or infinity. Redoing lens profile fixed.

[15/10/2025, 5:51:45 am] Ben Myers: I’ve had that happen before as well. Hasn’t happened in a long time. Try switching to locked view first and then switch into carts view. Likely won’t solve it but I remember that helping with something similar a while back.

[15/10/2025, 6:06:04 am] ~ Arron : Any idea how to edit the perspective view to pull the Bolt back to the track?

[15/10/2025, 6:10:11 am] ~ Niko: Try to open an old job, maybe there is some error on the kinematics