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Q&A and Video Feedback Call Replays·Q&A Recordings·29:52

Q&A, 22 Feb 2024: DJI's Inconsistent Log Names, No Universal Matching LUT (Try the Color Space Transform), Hyperlapse Maths at 25 fps, a Free Hyperlapse for Site Access, Night Strobes, and PPA Gear Insurance

John Meyer Instructor - host; his Air 3 camera was broken from a drop, so the hyperlapse demo is a screen-grab · Ian Student - Mini 3 Pro, Air 2S, Mavic 3, new Sony A7CR; Traverse City construction hyperlapse

The short version

  1. 'DJI is really bad about color science' - D-Log only on Mavic 3 / Inspire, D-Log M on Air 2S and Mini 4 Pro, D-Cinelike dropped; Normal or HLG for quick work, log for B-roll that needs range. No LUT matches all logs; Resolve's free Color Space Transform gets D-Log, S-Log, C-Log to Rec.709 (no D-Log M) - then match the first two clips and paste.
  2. Hyperlapse: frames = length x 25 fps; shoot time = frames x interval (125 frames x 3 s = 6 min 15 s for five seconds of video); DJI's 'length' means output length; waypoint speed moves the drone, interval compresses time. Ran out of battery? Compare minutes left with the calculated shoot time.
  3. Offer a construction company a free hyperlapse for access, then pitch $100-200 repeats weekly or monthly. Night: a Velcro Lume Cube strobe on top, out of frame unless fog; shoot late blue hour. Insurance: PPA membership (~$20/month) + Photo Care Plus, $250 deductible, worldwide - different from DJI Care Refresh.

At a glance, three clicks deep

Skim here first: the closed row is the glance, open is the study card with the key points and timestamps, and the ↓ link drops to that concept's full write-up below.

01Which log on which drone, and why no single LUT matches themKnow your drone's log;

Know your drone's log; CST as the starting point; match two clips and paste.

Profile map across models (L94c8b61e 0:03-0:06)

No universal LUT; CST (L94c8b61e 0:07-0:09)

Match-and-paste workflow (L94c8b61e 0:10-0:11)

↓ Full write-up of this concept

02Hyperlapse maths on screen, battery, and the waypoint speed settingframes = length x 25;

frames = length x 25; time = frames x interval; speed ≠ compression; free first, paid repeats.

Interval, length, 25 fps, formula (L94c8b61e 0:13-0:16)

Battery check; site access offer (L94c8b61e 0:16-0:19)

Waypoint speed vs interval (L94c8b61e 0:20-0:21)

↓ Full write-up of this concept

03Night strobes out of frame, and PPA gear insuranceLume Cube on top;

Lume Cube on top; PPA + Photo Care Plus, $250 deductible.

Strobe placement and fog (L94c8b61e 0:21-0:24)

PPA policy details (L94c8b61e 0:24-0:26)

↓ Full write-up of this concept

The concepts in full

01

Which log on which drone, and why no single LUT matches them

'I haven't really found any good LUTs that just match all of the logs together.'

Ian's Mini 3 Pro / Air 2S / Mavic 3 and a Sony A7CR. Full D-Log is the flattest and lives on the higher line; D-Log M on Air 2S and Mini 4 Pro; the Mini 4 Pro dropped D-Cinelike for D-Log M and HLG; Canon has Log/Log 2/Log 3 as a parallel. He shoots Normal for talking heads and log for B-roll. A universal LUT would need a colour-chart shoot; the practical tool is Resolve's OFX Color Space Transform for D-Log, S-Log, C-Log → Rec.709 (not D-Log M, not perfect). Two-drone jobs: match the first couple of clips, copy the grade, tweak - different scenes needn't match.

Why it matters

Where the CST lesson came from.

02

Hyperlapse maths on screen, battery, and the waypoint speed setting

'They should label it output length or something.'

Interval = seconds between photos (3 s in the demo); 'length' = output duration; hyperlapses render at 25 fps so speed up to 30 in the edit; frames = length x 25, shoot time = frames x interval - 125 frames x 3 s = 375 s. Ian's Mavic 3 died mid-loop over a graded site near Traverse City: check battery minutes against the calculated time. Waypoint mode's speed (e.g. 5 mph) only moves the drone; interval sets the time compression. Business angle: a free hyperlapse buys site access, then $100-200 per repeat, weekly or monthly, cut to well under 30 minutes.

Why it matters

The arithmetic pilots skip and then run out of battery.

03

Night strobes out of frame, and PPA gear insurance

A $20-a-month photographers' association membership is how he insures the drones.

A Velcro-mounted Lume Cube on top of the drone, out of the camera's view; fog can flare it; required for night flying; shoot late blue hour for ground lights plus sky colour. Insurance through PPA (ppa.com): cheapest membership (~$20/month) plus Photo Care Plus - $250 deductible, drones, theft, computers, worldwide; DJI Care Refresh is a time-limited warranty, not insurance. His Air 3 repair after a drop: 'only a couple hundred', under the deductible.

Why it matters

Two practical answers Paul's clients will ask.

Tools referenced

ToolCoverageMomentContext
DaVinci ResolvementionedColor Space Transform
Lume CubementionedNight strobe
DJI Mini 4 PromentionedD-Log M + HLG, no D-Cinelike

Action items

    Resources mentioned

    Resources
    • docPPA - Professional Photographers of America

    Extraction notes

    This page was built from an auto-generated transcript, which garbles product and people's names. Those were corrected silently in everything above and logged here for transparency. The warnings flag claims that were true on the recording day but change fast.

    Transcript corrections applied

    The transcript saysThe trainer actually means
    Maverick 3 / HDL / loom cube / course aMavic 3 / HLG / Lume Cube / Course Lock

    True on recording day — verify before relying