Getting the Most Out of Your Images
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Transcript of Getting the Most Out of Your Images
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How to get the most out of your (geo)photographyFebruary 26, 2013 Webinar
Jerry F. MagloughlinColorado State University
1. Rationale2. My approach: pragmatism &
geoscientists; overview & fundamentals
3. Geophotography in general4. The four components (PEST)5. Equipment6. Planning7. Shooting tips
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1. Rationale• Photography is pervasive in geology (teaching,
research, outreach; indoor, outdoor, photomicroscopy, other imaging).
• “Photographs…show features exactly as they are, thus being the most convincing kind of graphic evidence.” –R.R. Compton
• Geoscientists visit amazing places, but often return with mediocre photographs.
• An explosion of equipment & techniques… harder now?
• Rarely is any training afforded!• Issues unique to, or special considerations in,
GEOphotography. • Photographic skills may be worsening!
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Survey question:
I received “significant” instruction on what to do, photographically, in the field while doing geology/geoscience/field work:
Click yes (agree) or no (disagree)
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• We’re geoscientists first, photographers second• Not unlimited money or time• We’re usually on a schedule• We still want high quality images• My approach:
– careful choice of equipment, – planning, – care while photographing, – modest investments in workflow…– we can do a lot better!
2. My approach: pragmatism & geoscientists
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• In this webinar: cameras, planning, key points when shooting. • Goal: maximum benefit for the minimum time invested, and that
includes helping to ensure you get a good photograph.• Ellen Bishop: From Shooting to Post-processing: Making the Most of
your Camera's Capabilities.• Steve Weaver: Beyond the snapshot: making the excellent geo-
photograph in the field. • Marli Miller: Public Outreach• David Mogk: Geophotography as
Pedagogy: Students Creating and
Using Geologic Images.
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3. What IS geophotography?Geophotography involves the use of light (visible, UV, IR) and realistic recording and processing of images of geologic features and processes (or experimental equivalents), motivated by a scientific understanding or question, in order to accomplish a specific, useful goal.
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There is a continuum:
“The Geo-Mugshot” Artistic & landscape photography
Goo
d ge
opho
togr
aphy
Balanced framing, subject centered, minimize ‘depth’, realistic (mid-day) color, scale included, standard point of view, sharp, stop action, completeness, horizontal
Emotion, drama, wonder, reaction triggering, ambiguity, imagination, depth, uneven framing, curiosity, ambiguous scale/size, possibly low DR, incompleteness
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There is a continuum:
“The Geo-Mugshot” Artistic & landscape photography
Goo
d ge
opho
togr
aphy
Balanced framing, subject centered, minimize ‘depth’, realistic (mid-day) color, scale included, standard point of view, sharp, stop action, completeness, horizontal
Emotion, drama, wonder, reaction triggering, ambiguity, imagination, depth, uneven framing, curiosity, ambiguous scale/size, possibly low DR, incompleteness
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4. The four components1. Planning (light, conditions)2. Equipment (good camera
with a variety of manual controls, good lens, tripod)
3. Shooting/execution (all efforts on-site)
4. The post-processing
No matter what your equipment, you can get
better results.
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5. Equipment:Cameras
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Point & shoot
Pros: • Small & light (field consideration)• Cheap• Easy to use; not as much room to
grow as a photographer• Easy access/backup camera• Some are “waterproof”
Cons:• Not great in low light• Not great sensors• Minimal manual control• Fixed lens• View finders marginal or must
use LCD (soft, bright sunshine)• Difficult to shoot in sophisticated
set-ups
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Bridge/EVF (electronic viewfinder)
Pros: • Lightweight• Reasonably small & cheap• May take filters• Good image quality• Better telephoto capability• May have much better lenses• More manual control
Cons:• Sensors still small• Viewfinder & LCD issues• Can’t change lenses• Usually not great for macro
http://www.adorama.com/alc/0012789/article/Buying-Guide-The-Best-EVF-Cameras-Right-Now
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MILC/Hybrid
Pros: • Some have excellent sensors &
image quality• Not fixed lens• ‘Pancake’ lenses and/or adapters
for DSLR lenses• Better in low light• Panorama mode (Sony)• More sophisticated• Filters • Range of accessories including
GPS-tagging, flashes, and microphones
Cons:• Moderately expensive• Heavier• May have/need an array of lenses• No through-the-lens viewfinder• Uses batteries faster• Crop factors from 1.5x to 5.5x
http://www.adorama.com/alc/0013367/article/The-Best-MILCs-Right-Now
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DSLR
Pros: • The best sensors• The best low-light sensitivity• Wide array of lenses• Sophisticated in-camera software• Filters• All accessories• Highest pixel counts• Some have ‘full-frame’ sensors• May have multiple memory cards
Cons:• Most expensive• All accessories• Heaviest• May have/need an array of lenses• Some don’t have built-in flash• Most difficult to learn to use
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UV & polarizing
Equipment: filters
Minimal effect with digital sensors (far less sensitive to UV) but protects lenses from accidents and cleaning. Get
multi-coated filters (ghosting, cleaning). Keep clean!
Richer colors, darkens skies, reduces reflections.
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Equipment: wide angle lenses• We shoot many large things. • WA lenses allow great depth of field—a good
antidote to the geologic mugshot.• If zoom, will handle a lot of your average uses.
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Equipment: Redundant storage!
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Equipment: tripod
• Quality = weight• Quality = $$$
recent Kickstarter project
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GPS tagging
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6. Planning• Weather:
– cold (batteries)– wet (protection)– gray (flash)
• Physical conditions: – dusty (less valuable equipment? avoid changing lenses?)– precarious (less valuable equipment, and less of it?)
• Where: – total weight, tripod, monopod (some double as hiking sticks; Gitzo, Novoflex)– good quality pack is valuable!
• Light: – reflector? – flash?
• When (are you going to be there): – topography (Google Earth)– http://photoephemeris.com/
• Bottom line: equipment, weight, batteries, lighting
LEKI Photosystem Carbon Speedlock Trekking Pole
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6. Planning• Weather:
– cold (batteries)– wet (protection)– gray (flash)
• Physical conditions: – dusty (less valuable equipment? avoid changing lenses?)– precarious (less valuable equipment, and less of it?)
• Where: – total weight, tripod, monopod (some double as hiking sticks; Gitzo, Novoflex)– good quality pack is valuable!
• Light: – reflector? – flash?
• When (are you going to be there): – topography (Google Earth)– http://photoephemeris.com/
• So: equipment, weight, batteries, lighting
LEKI Photosystem Carbon Speedlock Trekking Pole
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sunset
sunrise
current sun direction
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sunset
sunrise
current sun direction
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7. Shooting tips• (biggest impact with
least effort & expense)
• Focus & sharpness• White balance• Exposure• Depth of field• Life, action, humor
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Focus & sharpness• Control where your camera focuses…
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Focus & sharpness• Control where your camera focuses…
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Focus & sharpness• Control where your camera focuses…• “Good glass” makes a difference• Clean optics & filters• Tripod• Vibration reduction (OIS) helps• Lenses have ‘sweet spots’ • With more pixels, more care is needed• Take lots of shots• Make sure shots are sharp on-site
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Auto
ManualWhite balance
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Exposure
• Know your histograms• Make sure your images are correctly exposed on-site• Hoodman LCD viewer (bright sunlight)
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Depth of field—changing f/stop • A smaller aperture is not always better, and
can be substantially worse.
http://www.cambridgeincolour.com/
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F/2.8
Gain of depth of field with decreasing aperture…
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F/7.1
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F/14
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F/22
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f/10 f/14 f/18 f/22
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Add life, action, humor
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ResourcesPractice!Your local photographic club or society!
References and ResourcesAdorama Learning Center: http://www.adorama.com/alc/B&H Photo “InDepth”: http://www.bhphotovideo.com/indepth/ Cambridge in Colour: http://www.cambridgeincolour.com/ Nikon tutorials: http://www.nikonusa.com/en/Learn-And-Explore/index.page OneSlide Photography: http://oneslidephotography.com/
Poster on Geophotography, GSA Denver: http://warnercnr.colostate.edu/~jerrym/zGSAGeophotographyPosterDenver2010Magloughlin.pptxPowerPoint on Geophotography, GSA Minneapolis:http://warnercnr.colostate.edu/~jerrym/zGeophotographyTalkMagloughlinGSAMnpls2011.pptxPDF on Geophotography, GSA Minneapolis:http://warnercnr.colostate.edu/~jerrym/zGeophotographyTalkMagloughlinGSAMnpls2011.pdf Manuscript on Geophotography, submitted to Journal of Geoscience Education: http://warnercnr.colostate.edu/~jerrym/zGeophotographyJGEManuscript2012.pdf