Timeline for What does normal focal length really mean?
Current License: CC BY-SA 4.0
10 events
| when toggle format | what | by | license | comment | |
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| Mar 25, 2020 at 22:14 | answer | added | Michael C | timeline score: 1 | |
| Mar 25, 2020 at 7:30 | answer | added | xiota | timeline score: 1 | |
| Mar 24, 2020 at 23:15 | answer | added | Alan Marcus | timeline score: 0 | |
| Mar 24, 2020 at 21:25 | comment | added | xenoid |
Same experiment on my 70D, and the focal length is 50mm. In the specs on the DP Review site, the viewfinder magnification says 0.95× (0.59× 35mm equiv.) that would hint that the viewfinder compensates for the crop factor?
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| Mar 24, 2020 at 21:00 | history | tweeted | twitter.com/StackPhotos/status/1242556939311239168 | ||
| Mar 24, 2020 at 16:59 | comment | added | Kahovius | While I don't have a good answer to the actual question here, wouldn't your method be influenced by viewfinder magnification? For a new Sony α7, this is reported to be 0.78, meaning that a 1:1 ratio would be achieved with a 50mm / 0.78 ≈ 64mm focal length (assuming that the viewfinder magnification is quoted for a 50mm lens). | |
| Mar 24, 2020 at 16:27 | comment | added | Alaska Man | I think it is more complex then just angle of view, there is perspective. Both the perspective of how objects look eye vs lens and perspective of the brain doing the thinking about what the eye/lens is seeing. That is the way eye see it. Is this a question that can be answered within the narrow parameters of this site ? | |
| Mar 24, 2020 at 16:05 | comment | added | Tetsujin | I think there's an element of "once it's printed on paper of size x:y viewed at z" but I've tried similar & ended up at about 70mm too. Interesting to learn what is actually the 'rule' covering this. | |
| Mar 24, 2020 at 15:55 | review | First posts | |||
| Mar 26, 2020 at 7:50 | |||||
| Mar 24, 2020 at 15:53 | history | asked | antimatter | CC BY-SA 4.0 |