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Diy...

Covid, tra autarchia ed archivi

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Diy sent on November 10, 2020 (19:07) by Paolo P. 87 comments, 3216 views. [retina]

, 1/100 f/6.3, ISO 1000, tripod.

Costruzione per scansione diapositive 24x36 e negativi 24x36 – 45x60 – 60x60 Fotocamera Nikon D610 – Ottica Sigma 105 mm macro Dimensioni ottimizzate per usare sistema di illuminazione con una normale lampada da tavolo, nonché per avere il mirino all'altezza occhi da seduto alla scrivania. La scatola in legno è montata “a coulisse” su due guide fissate alla base ed è posizionata per avere la distanza più o meno corretta della fotocamera per le riprese di fotogrammi 24x36 con rapporto 1:1 Il fissaggio è ottenuto per mezzo di due viti “maschio/femmina” con filettatura interna (di quelle usate per i mobili) disposte in modo asimmetrico onde non creare asse di rotazione. La cassetta di supporto dispone di due ulteriori fori (non visibili) che consentono di arretrare il sistema sulle guide per le riprese di formati maggiori. Slitta micrometrica con doppi cursori ortogonali. La slitta è fissata con due viti alla base di legno. La distanza dal piano di ripresa è calcolata con approssimazione di circa 2 mm in modo tale che la verticale passante dal baricentro del sistema (fotocamera + ottica) cada in centro alla base di appoggio onde non generare alcun “momento” sull'apparato di fissaggio che risulta praticamente statico. L'ottimizzazione della distanza avviene per mezzo della vite micrometrica come pure la centratura fine in orizzontale. Il telaietto posto davanti all'obiettivo dispone di due viti “a galletto” che ne consentono lo scorrimento in verticale su due “asole” fresate sulla parete frontale. Sulla parte posteriore illuminazione a 4000 °K con diffusore su telaietto di cartoncino nero. Funziona, e con rapidi aggiustamenti mi consente di scansionare anche i negativi di formati diversi prodotti, ai tempi, con Rollei biottica, Zenza Bronica, Hasselblad 500 C. Un piccolo gioco a cu mi sono dedicato senza pretese particolari, certo di essere lontano dai risultati di Carlo (Alfonso), Carlo (Magher3D), Fabio etc…. ben scusandomi con chi non sto menzionando. Al più mi conservo quel che posso scegliendo alcune opportunità fra parecchie decine di migliaia di dia e negativi prodotti nel corso di una vita con una filosofia condivisa, non più tardi di 25 giorni or sono, con Carlo Chierichetti … tristissima storia che stento a credere vera.



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avatarsenior
sent on November 10, 2020 (19:12) | This comment has been automatically translated (show/hide original)

Beautiful 8-)
I would only add a lampsho between lens and slides/negatives to avoid reflections and parasitic lights
As good luck!!!
I look forward to your film recoveries now... I already know they will be excellent 8-)
Ciao, Carlo

avatarsenior
sent on November 10, 2020 (19:16) | This comment has been automatically translated (show/hide original)

Don't take it off ;-)

avatarsupporter
sent on November 10, 2020 (19:19) | This comment has been automatically translated (show/hide original)

Of course, Carlo, already done, I did not place it just because he would hide my vertical frame.
Thane for the passage and comment that, once again, connoted your competence.
A greeting.
Paolo

avatarsupporter
sent on November 10, 2020 (19:19) | This comment has been automatically translated (show/hide original)

I made a much more spartan :-D

avatarsupporter
sent on November 10, 2020 (19:23) | This comment has been automatically translated (show/hide original)

Giuseppe, just work and then....
Thane for the ride.
A greeting.
Paolo

avatarsenior
sent on November 10, 2020 (19:23) | This comment has been automatically translated (show/hide original)

Well designed, meticulous description that I particularly appreciated.
Bravo Paul

avatarsenior
sent on November 10, 2020 (19:40) | This comment has been automatically translated (show/hide original)

High carpentry :-D Congratulations!
A textbook description...
I can't wait to see the results, which will definitely be great... but mostly to admire your photos taken on film over the years!
I wish you good work!
Aeo
Gaet.

avatarsupporter
sent on November 10, 2020 (19:41) | This comment has been automatically translated (show/hide original)

Just to make you laugh here's "the acolyte" :-D :-D :-D



avatarsenior
sent on November 10, 2020 (19:43) | This comment has been automatically translated (show/hide original)

Giuseppe, the important thing is that it works...

avatarsupporter
sent on November 10, 2020 (19:53) | This comment has been automatically translated (show/hide original)

Working works :-P sin I lack the time to use it but when I retire I dedicate myself :-P Covid permitting, however I am half carpenter also maybe I copy the idea of Paolo :-D

avatarsupporter
sent on November 10, 2020 (19:56) | This comment has been automatically translated (show/hide original)

Great Paolo, congratulations hello Corrado

avatarjunior
sent on November 10, 2020 (20:02) | This comment has been automatically translated (show/hide original)

Congratulations on the project. I'm trying DIY duplication, too, with results that aren't yet optimal. I'm curious if you can how you handled the light, at the moment it's the hard bone that's making me the most grains. Anyway, thank you, good job.

avatarsupporter
sent on November 10, 2020 (20:12) | This comment has been automatically translated (show/hide original)

Guys this art of scans begins to give ideas and fruits to everyone :-) beautiful your magic box 8-) interesting the idea of Joseph, you are volcanic guys, congratulations Paolo :-P
Loris

user196465
avatar
sent on November 10, 2020 (20:12) | This comment has been automatically translated (show/hide original)

Very interesting, congratulations Paolo
Ciao

avatarsupporter
sent on November 10, 2020 (20:20) | This comment has been automatically translated (show/hide original)

Excuse me I have a question that concerns all of you who have designed with your creative dexterity the devices, the focus or the minimum distance as it is? especially your Joseph who is inserted in the fender :-o

avatarsenior
sent on November 10, 2020 (20:21) | This comment has been automatically translated (show/hide original)

All that is missing is the patent filing.... but I think it's copied, given the meticulous description!
Elogio to inventiveness and precision ;-)
Wait for a few scans to win the copyright... :-P
Bravo Paolo!
Gabriel

avatarsupporter
sent on November 10, 2020 (20:24) | This comment has been automatically translated (show/hide original)

30 cm the minimum focus distance, then it depends mine is a 100 macro lens that puts a very close focus

avatarsenior
sent on November 10, 2020 (20:32) | This comment has been automatically translated (show/hide original)

Bravo Paolo, ingenuity is not lacking. Good luck with your work.
Cyo Andrea

avatarsenior
sent on November 10, 2020 (20:41) | This comment has been automatically translated (show/hide original)

Loris, my focus distance (1:1 playback ratio) with the Canon EF 100 mm. macro is 31 cm. from p.f.
This distance varies, however, depending on the focal point used and any extension tubes used to reach the reproduction ratio that should be 1:1.

avatarsenior
sent on November 10, 2020 (20:43) | This comment has been automatically translated (show/hide original)

Bravo Paolo, I admire Your ingenuity and desire to do and experiment, I am sure you will get good results, congratulations ;-)
Ciao, Renzo


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