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Photography
Focal length and sensor to max exposure for sharp stars using 500 and NPF rules.
Open Star TrailPhotography
Reference for telephoto lenses: focal ranges, compression, and wildlife use.
Open TelephotoYour specific task is focal length and sensor to max exposure for sharp stars using 500 and npf rules. Open the page, drop your input, get the result — typically under a second.
Your goal is reference for telephoto lenses: focal ranges, compression, and wildlife use. 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. Star Trail focuses on focal length and sensor to max exposure for sharp stars using 500 and npf rules; Telephoto focuses on reference for telephoto lenses: focal ranges, compression, and wildlife use. 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 Star Trail and Telephoto work without signup. We only ask for an email if you decide to subscribe to a paid plan.