Moon at Perigee | JuzaPhoto

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Galleries
Astrophotography

10.6 MEGAPIXEL

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Astro foto View gallery (4 photos)

Moon at Perigee sent on November 13, 2016 (23:33) by Giovanni. 2 comments, 506 views.

con Kenko Pro 300 DGX 1.4x, 1/400 f/8.0, ISO 400, hand held.

Confronto di due scatti, uno con 5d Mark III e 400 5.6 con kenko 1.4, l'altro con Mark IV e 1.4x Canon. Luna quasi al Perigeo, confronto delle dimensioni apparenti della Luna.

View High Resolution 10.6 MP

2 persons like it: Errevi, Giampaolo Riva

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Iz3hbt

sent on November 15, 2016 (9:07)

This comment is too long to be automatically translated, so it will be shown in its original language (Italian)

Click here to translate the comment in English

Ciao Giovanni.

Guardando la tua foto non ho potuto non saltare dalla sedia... le proporzioni a occhio mi son subito parse esagerate.
Te la faccio breve. Mi sono recuperato le dimensioni apparenti alle date dei tuoi scatti, mi sono misurato le dimensioni della Luna nei tuoi scatti e in effetti c'è qualcosa che non torna.

12/11/16
33'16'' (non 33'39''), con Luna in foto che misura 994pixel ovvero 2,008''/pxl

20/06/13
32'55'' (non 33'08''), con Luna in foto che misura 852pixel ovvero 2,318''/pxl

Come intuisci la foto del 2013 (che ti appare più piccola) risulta eccessivamente più piccola prevalentemente perché ha meno definizione, presenta più secondi per pixel.
Volendo rapportare correttamente le due lune, quella del 2016 sarebbe solamente il 6% più grande rispetto a quella del 2013 (e non il 17% come nelle tue foto).

La causa? credo la diversa attrezzatura usata per i due scatti.

CIAO ;-)

Giovanni

sent on November 15, 2016 (11:05) | This comment has been automatically translated (show/hide original)

Hell you're right, but now I realized gross error, the different file resolution, ie more megapixels, I have not made up the two. I sprinkle head with ashes.

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Some comments may have been automatically translated with Microsoft Translator.