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Macro on a Budget: Using Extension Tubes | B&H eXplora
- https://www.bhphotovideo.com/explora/photography/tips-and-solutions/macro-budget-using-extension-tubes#:~:text=If%20you%20are%20curious%2C%20you%20can%20calculate%20your,%2B%20%28Extension%20Distance%20%2F%20Focal%20Length%29%20Focus%20slider
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The Ultimate Guide to Extension Tubes - Shutter Muse
- https://shuttermuse.com/ultimate-guide-to-extension-tubes/
- Example 1: The Canon 50mm f/1.8 STM has a native magnification of 0.21x. If we use a 12mm extension tube on it, our new magnification will be 0.21 + (12/50) = 0.45x. Example 2: Using the same Canon 50mm lens with stacked 12mm and 25mm extension tubes would give us a magnification of 0.21 + ( (12+25)/50) = 0.95x.
Extension Tube Calculator - sutic.nu
- https://monochrome.sutic.nu/2018/05/24/extension-tube-calculator.html
- The distance from the lens to the subject. This should be "comfortable" - so you can get close enough to isolate the subject from any distracting foreground, but also not so close that you end up mashing the lens into it. . [2] Taken from the excellent The Mathematics of Extension Tubes in Photography. [a]
How to Calculate the New MFD of a Lens When Using an …
- https://shuttermuse.com/how-to-calculate-mfd-of-a-lens-with-an-extension-tube/
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Extension tube basics, formulas, and Determining …
- https://www.scantips.com/copycalc2.html
- Magnification = Exten_length / Focal_length. Basically this says when focal length and extension tube are numerically equal (and lens focus is at Infinity), we get 1x magnification, which is 1:1 (image size is same as real life size). That relation is necessarily implied by the diagram above.
Extension Tubes: Close Up Photography Lesson #2
- https://digital-photography-school.com/extension-tubes-close-up-photography-lesson-2/
- An extension tube is a hollow, light-tight tube that fits between your lens and your camera mount. It moves your lens further from the camera, and the front element closer to the subject. The closer you can focus, the more magnification you get. The above photo shows a 50mm lens fitted with a 25mm extension tube.
Macro on a Budget: Using Extension Tubes | B&H eXplora
- https://www.bhphotovideo.com/explora/photography/tips-and-solutions/macro-budget-using-extension-tubes
- Ready for some fun with math? If you are curious, you can calculate your extension tube-armed lens’s new magnification with a simple equation: Extension tube magnification formula = Lens’s Native Magnification + (Extension Distance / Focal Length)
How to use Extension Tubes for Macro Photography
- https://thelightmatters.com/techniques/how-to-use-extension-tubes-for-macro-photography/
- Macro Photography – 100mm Macro Lens. Macro Photography – 70-200mm Lens + 20mm Extension Tube, Focal Length = 135mm. All four of these images were taken under the same conditions. Same lighting and exposure (1/200th @ f/16, ISO200), same subject, same Canon EOS 20D body.
How to calculate depth of field by using extension tubes
- https://photo.stackexchange.com/questions/53325/how-to-calculate-depth-of-field-by-using-extension-tubes
- To calculate DoF for macro distances you can use magnification-based formula. DOF = 2*N*c*((m/P+1)/m*m) Where N is f-number, c is circle of confusion (typically 0.025 mm or 0.001 in), m is magnification and P is pupil magnification. f-number you know, circle of confusion is above, magnification you can figure out.
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