The Scanning section is BELOW
A few attempts to clarify some mysteries about the basics of flash and digital photography, hopefully helpful. More detail for those interested, more about how the details actually work (which is good to know when you're ready). A little of it is Nikon specific, however almost all subjects are general, not affected by brand.
Guide Numbers (with calculator)
Flash pictures are Double Exposures - Important
Flash Outdoors - Fill Flash in Sunlight
Flash Indoors - Factors affecting TTL metering exposure
Auto ISO - for flash?
Rear Curtain Sync - for Blur from Ambient Motion Trails
Matching White Balance of Room Lights - Colored Filters on Flash
Pixels, Printers, Video - What's With That? Basic Fundamentals
Image Resize - Cropping, Resampling, Scaling and Aspect Ratio
White Balance Correction Click on White things
Why Should I Shoot Raw? It's the easy way to go
How Light Meters Work (maybe not as assumed)
Details about Metering Principles (including TTL)
A Histogram is Not a Light Meter Incident vs. Reflected meters
18% Gray Card - What's the Idea?
EV - Exposure Value and Chart
Do I need a handheld light meter? Including Sekonic L308S
Surprises in the Use of Histograms Avoid the camera single gray histogram
Histograms are Gamma Encoded The numbers may not be what you think
What and Why is Gamma? (with calculator).
Nikon TTL BL with D-Lens Distance Zoom lens distance accuracy is poor
Comparisons of Optical Slave Triggers (for the SB-600 too)
Lighting Kits for Home Setups Flash is good for Portraits
f/stops and shutter speeds Understanding the numbers
Depth of Field Want to Blur the Background?
Diffraction Limited Pixels? Really?
Memory Card Speed How much do we need?
Camera Exif Data Need a good Exif viewer?
Photo Editor Curve Tool (compared with Levels)
Calculators with "more" features than seen elsewhere.
|Compare EV difference of Two:|
|Camera Exposures||f/stop, shutter, or ISO values|
|Power of Flashes from Guide Numbers||Distances due to Inverse Square Law|
|DPI calculator - Printing and Scanning resolution||Field of View calculator|
|Guide Number calculator with a "Total exposure" mode||Nominal and Precise f/stops, Shutter and ISO|
|HSS Guide Number calculator New for HSS||Percentage Fill Flash for TTL Flash Compensation EV|
|Depth of Field and blurring the background||Calculate Gamma|
|Crop Factor calculators||Slide Copy, image size and resolution|
|Calculate EV, and EV chart with third stops||Convert Bytes, KB, MB, GB, TB|
|Determine Distance or Size of an object in the image||Maximum Image Size from Megapixels|
|Milky Way exposure time on fixed mount||Calculate Airy Disk diffraction|
|Calculate camera shake in pixels (just for fun)|
This scanning material is about the basics of scanning, still very valid, however digital camera photos are already scanned, so to speak (meaning, first preference is to use your original file if you have it). The purpose is to offer some scanning tips and to explain the basics for 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 and camera. How it works, for those that want to know.
Included here are the general questions that we've all asked about digital images. The material is about the basics, and is appropriate for the beginner. The content is 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 be efficient and get the most from our images, in the various ways that we can use them.
Many newbies want to scan a photo at the greatest possible resolution. We'll explain why that's the wrong answer, with tips about how to choose a more appropriate answer. That and many other scanning basics are covered here, and it's intended to be a fast jump start to aid newcomers to graphics and scanning. There will be a little technique to learn, but when you've seen it once, then it's rather simple.
Video Resolution - How much to scan?
Say No to 72 dpi - It's a false notion
Printing Resolution - Scaling and Resampling
Printer Resolution - How much to scan?
Line art and Threshold - Copy, OCR, Text
Descreen to remove Moiré Interference
Images in printed media
Interpolated Resolution - 9600 dpi?
Photo Resolution - How much can we scan?
Image File Formats - Which format?
Transparent Media Adapter - 35 mm slides?
Copyright © 1997-2018 by Wayne Fulton - All rights are reserved.
Please report ( Here ) any problems with the calculators, or with any aspect of any page. It 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 email types probably get no response.