Sport (fotocamera)

La Sport (Cnopm) è una macchina fotografica prodotta negli anni trenta dalla «Gosudarstvennyi Optiko-Mekhanicheskii Zavod» (GOMZ) di Leningrado (Russia).^[1] Il nome Cnopm non è altro che la scrittura in caratteri cirillici della parola sport.

Storia

È la prima fotocamera reflex 35 mm con mirino a pozzetto. Il suo prototipo, chiamato Gelveta, fu realizzato da A. O. Gelgar fra il 1934 e il 1935, ma l'origine del progetto risalirebbe addirittura al modello Mine, realizzato nel 1929 da A. A. Mine ^[2]. Della Sport, fu prodotto un numero limitato di pezzi, e la produzione cessò durante la seconda guerra mondiale a causa dei danni riportati dallo stabilimento. Sui mercati occidentali la fotocamera è poco conosciuta e ancora minore è stata la sua diffusione.

Caratteristiche tecniche

Si tratta di una fotocamera reflex monobiettivo per il formato 24x36, prevista per ottiche intercambiabili con innesto a baionetta. È stato realizzato però un unico obiettivo, l'Industar И-10 da 5 cm, f/3,5; la messa a fuoco è su scala metrica, con blocco sull'infinito.

È dotata di un mirino a pozzetto con possibilità di usare una lente d'ingrandimento (loupe o lentino) per il fuoco accurato sullo schermo smerigliato, e anche di un secondo mirino di tipo galileiano.

Il corpo è metallico, dorso e fondello sono rimovibili, la pellicola è contenuta in cassette metalliche dedicate, ricaricabili. Il contapose arriva a 50 fotogrammi, non autoazzerante. La pellicola passa da una cassetta all'altra, senza necessità di riavvolgimento. Un comando unico, trascina la pellicola, arma l'otturatore e seleziona il tempo di scatto. Il pulsante di scatto è frontale ed esiste un blocco contro le doppie esposizioni. L'otturatore è di tipo verticale, composto da due tendine metalliche rigide sul piano focale, i tempi vanno da 1/25 a 1/500 di secondo, più la posa B.

Note

^ La GOMZ, negli anni sessanta, cambiò il nome in Lomo, acronimo di Ленинградское оптико-механическое объединение (Leningrad Optics & Mechanics Amalgamation), azienda specializzata nella produzione di strumenti ottici avanzati, obiettivi, macchine fotografiche e videocamere, con sede a San Pietroburgo (Russia).
^ Jean Loup Princelle, Russian and Soviet Cameras, Hove Foto Books, 1995

Voci correlate

Lomo

Altri progetti

Wikimedia Commons contiene immagini o altri file su Sport

Collegamenti esterni

Pagina dedicata, su photogallery.it.
(EN) Scheda tecnica, su earlyphotography.co.uk.

Portale Fotografia: accedi alle voci di Wikipedia che trattano di fotografia

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