The Scanning basics section is BELOW
A Starting Point for Beginning to Learn Photography
Pixels, Printing dpi, Video dpi - What's With That? First Basic Fundamentals
Image Resize - Cropping, Resampling, Scaling Basics to use digital photos
White Balance Correction Click on White things
Why Should I Shoot Raw? It's the easy way to get quality
Depth of Field and Hyperfocal with calculator, and a better way to blur the background
Field of View of Lens and sensor, with calculator
Crop Factor and Equivalent Focal Length, and the WHY of the Magnification illusion
f/stops and shutter speeds Understanding the numbers, and a few lens properties
File Types, Bit Depth, Image size, Memory size Details
What are JPG losses? JPG Artifacts
RGB color What is Digital Color?
How Light Meters Work - Maybe not as assumed
Details about Metering Principles - Including TTL flash
A Histogram is Not a Light Meter - Incident vs. Reflected meters
EV - Exposure Value and EV Chart
Sunny 16 Rule of daylight exposure
18% Gray Card - What's the Idea?
Kodak's Accurate Exposure with your Meter A classic
Do I need a handheld light meter? Sekonic L308S
Surprises in the Use of Histograms Use only the camera's three RGB histograms
Histograms are Gamma Encoded The numbers may not be what you think
What and Why is Gamma? with calculator for histogram values
Introduction Basics about light and flash
Inverse Square Law Flash falls off with distance
Guide Numbers with calculator (even a HSS calculator)
Bounce Flash, and TTL Flash Compensation
Camera Distance Does Not Affect Exposure
Continuous light vs. Flash - Shutter Speed
Other Differences, Continuous vs Flash
Maximum Sync Speed The shutter limits it, Not the flash
HSS - High Speed Sync, What is it?
Flash pictures are Double Exposures - Learn to use it
Flash Outdoors - Fill Flash in Sunlight
Flash Indoors - Factors affecting TTL exposure
Auto ISO - but for flash?
Rear Curtain Sync - for Blur from Ambient Motion Trails
Matching White Balance of Room Lights - Colored Filters on Flash
A Beginners Guide to Select a Hot Shoe Flash, Part 2, chart
Guide Number calculator, even HSS too
Comparing Power of Flashes with Guide Number
Review of Yongnuo YN-565EX Speedlight
Review of Aperlite YH-700N Speedlight
Review of Neewer NW-985N Speedlight
Review of Neewer VK750 II Speedlight
Nikon TTL BL with D-Lens Distance - Lens distance accuracy is poor
Third Party Flash Brands Bypass the D-Lens Distance Problems
Comparisons of Optical Slave Triggers
Speed of Flash Units for High Speed Photography
Nikon TTL history - TTL, D-TTL, iTTL
The Main skill is to Learn to Actually "See" the Lighting
A Standard Portrait Lighting Setup
Mounting Speedlights in Umbrellas
Nikon CLS Commander Wireless Remote Flash System (AWL)
Lighting Kits for Home Setups - Flash is good for Portraits
Comparing Properties of Speedlights vs Studio Lights
Which is Softer, Reflected or Shoot-through Umbrellas?
Scanning Thousands of old Slides with a digital camera
Copying slides with a camera - calculator for macro lens or extension tube math
Curve Tool compared with Levels
Have we hit a megapixel limit?
Diffraction Limited Pixels? Really?
Memory Card Speed How much do we need?
Camera Exif Data Need a good Exif viewer?
Good Books on Flash Photography
Math tips of EV and precise camera numbers - f/stop, shutter, ISO
This scanning material is about the basics of scanning photos and documents. The purpose here is to offer some scanning tips about using your scanner, and to explain the basics for scanning photos and documents. It is also about the fundamentals of digital images, about the basics to help you get the most from your images from your scanner or camera. How it works, for those who want to know.
Included here are the general questions that we've all asked about digital images. The material is about the basics of scanning, certainly not superficial, but it is not at all difficult either, it is just simply about how it works. It describes in plain language the things we need to know to efficiently get the most from our images, in the various ways that we can use them.
Do realize that a digital camera is a scanner too, and its photos are already digitized (already scanned, so to speak, meaning, that first preference is to use your original camera file if you still have it).
DPI is one of the first concerns. Many newbies want to scan a photo at the greatest possible resolution. We'll explain why that's the very wrong answer, with tips about how to choose a more appropriate answer to match the actual job. That and many other scanning basics are covered here, and it's intended help newcomers to graphics and scanning of photos and documents. There will be a little technique to learn, but when you've seen it once, then it's rather simple.
Quick Summary of Digital Basics
Video Resolution - How much to scan?
Say No to 72 dpi - It's a false notion
File types, Bits, Image size, Memory size
Images for television or PowerPoint
Printing Resolution - Scaling and Resampling
The Scaling Menu - Scaling Output Size
Finding the Scaling and Resampling Menus
Printing Guidelines - Printing dpi
Printer Resolution - How much to scan?
Line art and Threshold - Copy, OCR, Text
Descreen to remove Moiré Interference
Images in printed media
Photo Resolution - How much can we scan?
Image File Formats - Which format?
Transparent Media Adapter - 35 mm slides?
Dynamic Range - 12 or 16 bits?
A few Links to Other scanning sites
A few Frequently Asked Questions - FAQ
A Simple Way to Get Better Scans
Restoration of Genealogical Photos
VueScan - still going strong!
Compare 2 shutter speeds, f/stops, or ISO values
Scanning and Printing Resolution DPI
Determine Distance or Size of an object in image
Maximum image dimensions from Megapixels
Copying slides with a camera - macro lens or extension tubes
Convert Bytes - B, KB, MB, GB, TB
There are 4 Sizes of any digital image
Cropping to match print paper size
Diffraction - In support of Depth of Field
Improved “500 Rule - Stars and Star Trails
Compare Inverse Square Law for 2 distances
Compare 2 Guide Numbers for relative Flash Power
Field of View and Chart and Math
Depth of Field and Hyperfocal - A better way to blur the background
Guide Number of ganged flashes. Exposure of metered Main & Fill
Percentage of Fill Flash of TTL Flash Compensation with Lighting Ratio
Precise Goal and Nominal Charts of f/stop, shutter and ISO settings
Chart of "The Numbers" for many sensors & film sizes - Lots more about Depth of Field
Stock Market50 year S&P 500 performance concerned withdrawal depletion
Compare performance of 100 tickers of stocks and funds
S&P 500 Daily Action and counts of Record Highs in last 5 years
Computing Compounded Gain and Annualized Returns - Basic Need to Know market info is at page top
Reinvested dividends - Dividends are NOT new income, but are just a big withdrawal from your fund and future gains. Withdrawing dividends is a poor investment plan, but Reinvesting them is new shares free of cost.
Please report any problem with the calculators, or with any aspect of any page content. Reporting of problems will be very much appreciated, thank you.
I do try to help with questions about the basics or about my material, but I cannot help with the "what hardware to buy" or "my hardware doesn't work" questions, so those two types of email will necessarily get no response.
Copyright © 1997-2023 by Wayne Fulton - All rights are reserved.