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  4. » Digitizing "do-it-yourself" slides - part 2

 
Digitizing "do-it-yourself" slides - part 2...

Scansione diapositive con X-T20

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Digitizing "do-it-yourself" slides - part 2 sent on August 30, 2020 (22:25) by Magher3D. 27 comments, 361 views. [retina]

1/80 f/3.2, ISO 400, hand held.

Foto di un "metodo fai da te" da me utilizzato per digitalizzare vecchie diapositive - parte 2. Il supporto diapositiva è realizzato in plexigass, ABS e alluminio ed è avvitato su staffe metalliche fissate a loro volta su supporti a vite con dado e controdado per permettere la regolazione e l'allineamento del tutto rispetto al piano. La fotocamere è fissata ponendo il corpo macchina a 13cm dal supporto diapositiva e regolandola in modo da essere esattamente ortogonale rispetto a piano e supporto diapositiva. Tra l'obbiettivo della fotocamera e il supporto diapositiva è posta la scatoletta/tubo di cartone nero per evitare interferenze della luce ambiente. Dietro al supporto diapositiva, ad una distanza di 6-7cm, è posto il pannello luminoso alimentato a 12V (la tensione andrebbe regolata per ottenere l'illuminazione ottimale). L'obiettivo XC 15-45 + tubo di prolunga da 10mm è impostato per una lunghezza focale di 24-26 mm. Per la fotocamera ho scelto di impostare un valore di diaframma F8 per avere meno criticità sulla messa a fuoco e con l'idea di compensare meglio eventuali errori di allineamento o di curvatura della pellicola. Per non avere tempi di scatto lunghi, anche se il tutto è ben fissato, ho scelto una sensibilità di 400 ISO che sulla X-T20 restituisce comunque un buon dettaglio e basso rumore. Ho inquadrato la diapositiva occupando il 65% dell'inquadratura sia per limiti del sistema (obbiettivo/prolunga con rapporto di riproduzione ridotto) sia per evitare eventuali distorsioni e vignettature ai bordi. L'immagine "utile" che si ottiene (che aimè dovrà poi essere croppata per togliere il bordo nero) ha una risoluzione di circa 15MP. Ho impostato il bilanciamento del bianco manualmente per avere la migliore fedelta possibile dei colori considerando di acquisire le diapositive direttamente in JPEG. Dopo aver concluso il setup iniziale, un po' lungo, la digitalizzazione è veloce perchè si inserisce la diapositiva, si scatta e si passa alla prossima. Prima di inserire le diapositive è molto importante pulirle delicatamente con un pennellino morbido e soffiarle con una pompetta per obbiettivi togliendo polvere e sporco.



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avatarsenior
sent on August 30, 2020 (23:24) | This comment has been automatically translated (show/hide original)

Congratulations on the good work !

avatarsenior
sent on August 31, 2020 (8:26) | This comment has been automatically translated (show/hide original)

Congratulations Carlo, great job!! Thank you for sharing. Have a nice day

avatarsenior
sent on August 31, 2020 (8:37) | This comment has been automatically translated (show/hide original)

Jacopo, Alejandro, thank you very much for the welcome passage.
I am "experimenting", I expect opinions and suggestions from the Juza people.
Good day,
Carlo

avatarsenior
sent on August 31, 2020 (11:55) | This comment has been automatically translated (show/hide original)

A good, indeed a very good for brilliant work and for driving the DIY method. Your results speak for themselves.
yo

avatarsenior
sent on August 31, 2020 (12:00) | This comment has been automatically translated (show/hide original)

Thank you very much Fabio, too good :-)
I've seen your results and I'd say I'm a spanner ahead! ;-)
Hello,
Carlo

avatarsenior
sent on August 31, 2020 (14:55) | This comment has been automatically translated (show/hide original)

Good job... I'd say from professionals 8-) my system, on the other hand, is much more artisanal, indeed rudimentary, indeed, let's face it, raw!!! ;-) But my result does not seem too bad to me :-)

avatarsupporter
sent on August 31, 2020 (15:34)

Superb this camera...bravo at you..bye Jean..

avatarsenior
sent on August 31, 2020 (15:56) | This comment has been automatically translated (show/hide original)

good, great job if it works and for sharing it: congratulations

avatarjunior
sent on August 31, 2020 (17:21) | This comment has been automatically translated (show/hide original)

Ingenious!
If I can afford advice, I would also like to show black cardboard the part that goes from the viewer or light panel to the machine to avoid dispersion of light in the surrounding environment and since we are in place of the red fabric I would use a black curtain, always to not have interference of dominant light that somehow can contaminate the dia, you know the light bounces and it colors causing dominant not wanting...
I see the effort and effort to calibrate everything...
How many compliments...

avatarsenior
sent on August 31, 2020 (18:04) | This comment has been automatically translated (show/hide original)

I thank you all infinitely for the appreciations and valuable advice that I will certainly put into practice.
@Carlo Alfonso: the useful image I get (without the black edges) is 65% of the overall 24Mpx image, or 24x0.65-15.6Mpx, while the output file is obviously compressed into Jpeg and has a weight that for the End mode will be about 4-5 MB. Maybe I didn't explain myself well.
Let me know how it went with the X-T1 and the 55-230 (I unfortunately have limited equipment, especially with regard to the goals)
@Biblos: OK, I will try to shield the back and center the light panel.
Soon, hello
Carlo

avatarsenior
sent on September 03, 2020 (8:08) | This comment has been automatically translated (show/hide original)

:-o Congratulations... Very ingenious ;-)

avatarsenior
sent on September 03, 2020 (8:20) | This comment has been automatically translated (show/hide original)

Thank you Gaet, I get along ;-)
Hello,
Carlo

avatarsenior
sent on September 08, 2020 (15:49) | This comment has been automatically translated (show/hide original)


avatarsenior
sent on September 08, 2020 (17:57) | This comment has been automatically translated (show/hide original)

Hello Carlo you do not have to apologize indeed I am very pleased that you are back on the subject, we would miss it.
I did some other tests as you suggested, lowering ISOs to 100 and trying to change the film simulation and the color and contrast settings. I also increased the panel light a bit to keep the diaphragm at F8 with not too long times to not increase the noise and overall I got good results.
Dially I concluded that to scan the "most interesting" slides perhaps it is better to shoot in the RAF and develop later with the most suitable profile or with Fuji RAW Studio or directly with Photoshop.
Thank you and I await your scans.
Good evening,
Carlo

avatarsenior
sent on September 08, 2020 (18:22) | This comment has been automatically translated (show/hide original)

Hello, Charles. I'll also try WITH RAW files to see what comes out of it compared to the jpeg in the room. The shooting times at f. 8 with my light panel typically range from 1/10 degrees to 1/30 degrees. Only in a few cases have I dropped to 1/8 degrees or 1/6 degrees or climbed up to 1/80 degrees by intentionally overexposing or underexposing.
I have not seen a significant improve on jpeg in the room, taking into account excessive industriousness to develop RAW files.
Thotho I'm going to publish the most successful scans.
Hello, Carlo

avatarsenior
sent on September 08, 2020 (18:36) | This comment has been automatically translated (show/hide original)

Ok, I actually kept the panel brightness too low (I was afraid of having too high contrasts) and with ISO 100 and f8 I arrived at a few seconds of shooting time. By adjusting things better, I have shooting times similar to yours.
For the rest, as you say, it is likely that by finding the most suitable settings you get with the jpeg in the room practically the same results as the RAW, saving a lot of work.
I'm going to do more evidence.
Heo

avatarsenior
sent on September 08, 2020 (18:39) | This comment has been automatically translated (show/hide original)

You're putting too much effort into a system made at the "Carlona" :-D :-D :-D

avatarsenior
sent on September 08, 2020 (18:44) | This comment has been automatically translated (show/hide original)

:-D :-D :-D
You've got a good time!!

avatarsenior
sent on September 08, 2020 (19:05) | This comment has been automatically translated (show/hide original)

:-D

avatarsenior
sent on September 08, 2020 (19:07) | This comment has been translated

MrGreenMrGreen


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