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Photography
Calculate magnification gain from extension tube length and focal length.
Open Ext TubeYour specific task is reference chart of color temperatures for common light sources. Open the page, drop your input, get the result — typically under a second.
Your goal is calculate magnification gain from extension tube length and focal length. Same approach: paste in, get the result, move on. No account, no upload.
Both tools live in the same category, so the choice depends on the exact subtask. Color Temp focuses on reference chart of color temperatures for common light sources; Ext Tube focuses on calculate magnification gain from extension tube length and focal length. Try whichever description matches your goal more closely — they're both free.
Yes — both tools are free for unlimited personal use. The Pro plan unlocks higher limits and batch features but the core functionality stays free forever.
Absolutely. Many users chain multiple tools together — process a file with one, then feed the result into another. Nothing is uploaded, so chaining is essentially instant.
No. Both Color Temp and Ext Tube work without signup. We only ask for an email if you decide to subscribe to a paid plan.