Photo & Video Capture Failures and How to Diagnose Them
Diagnose the four most common reasons FRC media comes out unusable — blur, noise, bad color, and bad audio — and apply a settings-first fix for each.
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Most 'my photos look bad' problems trace back to four causes. Debug them in order.
Symptom 1: Robots are blurry/smeared. The cause is almost always shutter speed too slow for the motion. Diagnosis: check the EXIF data — if the blurry shots are at 1/200s or slower, that's it. Fix: raise shutter to 1/800s or faster and let ISO climb to compensate. If only the background is blurry but the robot is sharp, that's intentional motion-panning, not an error.
Symptom 2: Photos are grainy/noisy. Cause: very high ISO in dim light. Diagnosis: ISO above roughly 6400 on most APS-C cameras shows visible noise. Fix options, in order: (a) open the aperture wider, (b) accept noise and denoise in Lightroom/Darktable, (c) only as a last resort, lower shutter speed. Remember the rule: noise is recoverable, motion blur is not — so don't trade sharp-but-noisy for smooth-but-blurry.
Symptom 3: Colors look orange/green/sickly. Cause: arena lighting has a strong color cast and your white balance is wrong. Diagnosis: skin tones and white bumpers look tinted. Fix: this is why you shoot RAW — set white balance in post using the eyedropper on a known-neutral surface (a white field element). If you must shoot JPEG, set a custom white balance on a gray card before the match.
Symptom 4: Video audio is unusable. Cause: relying on the camera's built-in mic in a loud arena. Diagnosis: crowd roar drowns everything; interviews are inaudible. Fix: for interviews, use an external mic — even a cheap lavalier into a phone beats an on-camera mic 20 feet away. For match footage, plan to replace ambient sound with music in the edit rather than salvage it.
The pre-shoot 60-second test. Before queuing, take one test frame of the field, zoom to 100% on the camera's screen, and confirm a static field element is tack-sharp and correctly exposed. This 60-second check catches a wrong ISO, a smudged lens, or a forgotten manual-focus setting before you waste a whole match.
Storage and backup failure. A subtle but devastating mistake: shooting an entire event onto one SD card and losing it. Fix: bring two cards, offload to a laptop at lunch, and back the day's edited keepers to the shared Google Drive before you leave the venue. 'It's on my card' is not a backup.
When something looks wrong, resist randomly changing settings. Read the EXIF, identify which of the three exposure variables (shutter, aperture, ISO) or white balance is the culprit, change only that, and reshoot a test frame.
Key takeaways
- Blur means shutter too slow (check EXIF; fix to 1/800s+); noise means ISO too high (open aperture or denoise).
- Sickly color is a white-balance problem — shoot RAW and correct with an eyedropper on a neutral surface.
- Arena audio is a lost cause on built-in mics; use an external/lav mic for interviews and music for matches.
- Run a 60-second 100%-zoom test frame before queuing, and never trust a single SD card as your only copy.
Lesson quiz
RequiredAnswer all 3 questions correctly to complete this lesson.
1.Your action photos of the robot in a dim competition arena keep coming out with motion blur. Which camera change is the most direct fix for freezing the action?
2.Indoor FRC arenas are often poorly lit. After setting a fast shutter speed to freeze the robot, what trade-off must you typically make to keep the image bright enough?
3.What is a reliable technique for catching the single best moment of a fast-moving robot action like a successful scoring cycle?
Answer every question to submit.