1 d~=m r~=f What Changes? Everything Why - - PDF document

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1 d~=m r~=f What Changes? Everything Why - - PDF document

Jan 12, 2023 378 likes •487 views

_ Skills / Knowledge for your resume d^qbp=pql= Production Risk no downtime p= q= l~= Gates Ambassador q o^fkfkd ` lropb Pete Lightowler Down Under Aquatic Imaging 1 2 d~

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SLIDE 1

1

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Pete Lightowler Down Under Aquatic Imaging

_ÉåÉÑáíë

  • Skills / Knowledge for your resume
  • Production Risk – no downtime
  • Gates Ambassador

dç~äë

  • STO Proficiency

– Setup – Test – Operate

  • Convey Knowledge

– Equipment – Lenses - Ports

dç~äë

  • Certifications

– STO Basics – STO Tech – STO Professional

  • *Not* a goal:

– Underwater Cinematography

`çìêëÉ=lîÉêîáÉï

  • Day 1

– Intro – why are we here? – Hands On – STO – Optics – Camera specific considerations

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  • Day 2 (Pool)

– Hands on STO – In-water operation / Lens testing – Break Down / Maintenance – Recap – BBQ

1 2 3 4 5 6

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SLIDE 2

2 d~íÉë=mÜáäçëçéÜó

  • Why we do what we do
  • Reliability
  • Features / Benefits
  • Why is this important?

råÇÉêï~íÉê=fåíêç

  • What Changes? Everything

– You – Sphere of Awareness – Optics – Recipe for Success

  • Diver first, cameraman second
  • Familiar equipment

e~åÇëJçå=JJ ÄêáÉÑäó

  • STO

– Setup – Test – Operate

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  • Camera Prep
  • Housing Prep

– Attention to detail – Seal line – Gland check – Damage

qÉëí

  • Functional Check

– Controls – Smooth, engaged – Lubricate?

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  • Seal Check Why?

– Unfamiliarity – Haste – Damage

  • Pass / Fail criteria.

7 8 9 10 11 12

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SLIDE 3

3 léÉê~íÉ

  • Controls

– Setup vs Dynamic

  • Trim Weighting (more at the pool)
  • Maintenance

– Rinse – Lubricate

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  • Failures?
  • Look for the Obvious

– Damage – Loose Glands – Seal Check Cap – Seal Lines

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  • If was OK, then

Something changed

– Impact – Customs Inspections – New o-ring?

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  • Locate a leak
  • Seal Check

– Soapy water

  • Without Seal Check

– Dive the housing. – Keep it upright, look for water / trails

13 14 15 16 17 18

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SLIDE 4

4 `çåÑáÖìêáåÖ=L=^ÅÅóÛë

  • One size does not fit all
  • Common

– Surface feed video – Lights – Ports

  • Custom
  • ÉéÉ~íW=pql=äÉíë=ÖçÁ

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  • Again – Everything Changes

– Amount of light – Color (loss of red) – > depth = >loss – Color correction needed – (Different course)

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  • Light transmits differently
  • Something needed between camera

lens and water

  • = a Port

mçêíë

  • Flat
  • Dome
  • Underwater Corrector
  • Underwater Wide Angle Adapter
  • Underwater Wide Angle Converter
  • Nikonos RS hybrid

19 20 21 22 23 24

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SLIDE 5

5 mçêíë

  • Flat

– Oldest, simplest – Compromises:

  • 20% Loss of FOV

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  • Flat

– Compromises:

  • Limited

Wide Angle

  • Vignetting
  • Chromatic

Aberration

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  • Flat

– Benefits

  • Inexpensive
  • Faces not

distorted. Good for cinema work.

25 26 27 28 29 30

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SLIDE 6

6 mçêíë

  • Dome

– Simple, Inexpensive – No loss of FOV

mçêíë

  • Dome

– Glass (common) or Acrylic – Compromises:

  • Soft Corners
  • CA in Corners
  • Possible flare /

reflections

Typical Dome results: Sharp in center, fuzzy in corners

mçêíë

  • Dome

– Not a simple window – Adds optical element to the lens – Creates a virtual image – VI located 3x radius from dome

31 32 33 34 35 36

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SLIDE 7

7 mçêíë

  • Dome

– Choose a lens with close focus; or – Larger Dome; or – Add diopter / close up lens – Important: Test performance of every lens w/dome!

mçêíë

  • Underwater Corrector

– Corrects to D/A of a Dome Port – Usually is prescriptive – Matched to a prime lens – Can have magnification – Full Field sharpness

mçêíë

Underwater Corrector

mçêíë

  • Underwater Adapter

mçêíë

  • Underwater Adapter

– Magnified at Wide – Prime or zoom lens – Little or no zoom through support – Can be prescriptive – Can have distortions / aberrations

37 38 39 40 41 42

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SLIDE 8

8 mçêíë

  • Underwater
  • Converter

mçêíë

  • Underwater Converter

– Magnified at Wide – For zoom lens – Full zoom through support – Nearly always prescriptive – Matched performance

mçêíë

  • Underwater
  • Converter

mçêíë

  • Nikonos RS
  • Adaptation

mçêíë

  • Nikonos RS Adaptation

– Hybrid adaptation – Nikon lenses designed for underwater – Prime or Zoom lenses

  • 13mm Fisheye

20-35 zoom

  • 28mm

50mm

mçêíë

  • Nikonos RS Adaptation

– Benefits

  • Quick change bayonet mount
  • No aberrations, distortions
  • Smaller size (travel)
  • Best performance value

43 44 45 46 47 48

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SLIDE 9

9 mçêíë

  • Nikonos RS Adaptation

– Negatives

  • Lenses out of production
  • Found only on the used market
  • May require new seals –difficult to service

mçêíë

  • Greater

Performance = Higher Cost

Flat  Dome  Underwater Corrector  Underwater (Wide Angle) Adapter  Underwater (Wide Angle) Converter  Hybrid (Nikonos RS)

HIGHER PERFORMANCE LOWER COST

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  • Camera Specific Considerations

`~ãÉê~=péÉÅáÑáÅ `çåëáÇÉê~íáçåë

  • What’s important to know about your

camera?

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  • Handling unique color shifts

underwater.

– H20 OLPF / Dragon Color 2 for the Magenta issue. – RAW workflow

`~ãÉê~=péÉÅáÑáÅ `çåëáÇÉê~íáçåë

  • SloMo for Natural History
  • Use of pre-record (critter action)
  • Use of presets – very powerful

49 50 51 52 53 54

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SLIDE 10

10 `~ãÉê~=péÉÅáÑáÅ `çåëáÇÉê~íáçåë

  • Considered differences among

cinema / broadcast / natural history

  • Good monitoring with focus /

exposure tools (that is, we don’t have focus pullers and such)

  • b`^m
  • Goals
  • STO
  • Proficiency

qçãçêêçï

  • Pool, 9 am
  • Hands on STO review
  • In-pool operation / Checkout
  • (Lunch)
  • Breakdown / Maintenance / Pack
  • Q&A
  • Wrap up. Social / Feedback

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John Ellerbrock Gates Underwater Products, Inc

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