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Two photography tools, side-by-side. See which fits your task.
Photography
Reference for dynamic range: stops, HDR techniques, and exposure blending.
Open Dynamic RangeYour specific task is reference for dynamic range: stops, hdr techniques, and exposure blending. Open the page, drop your input, get the result — typically under a second.
Your goal is calculate flash guide number from distance and aperture. 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. Dynamic Range focuses on reference for dynamic range: stops, hdr techniques, and exposure blending; Guide Number focuses on calculate flash guide number from distance and aperture. 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 Dynamic Range and Guide Number work without signup. We only ask for an email if you decide to subscribe to a paid plan.