Jesito
Joined: 24 Aug 2007
Posts: 5745
Location: Olivella, Catalonia, (Spain)
Expire: 2015-01-07
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 Posted: Tue Oct 16, 2007 4:06 am Post subject: Measuring shutter speeds |
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Jesito wrote:
Hi Colleagues,
After my recent RF fever, I've been getting a few cameras coming from eBay, from unknown owners. Some film failures because sealing and speed variations, have driven me to test the cameras before using them, so I can save in film...
One the measurements that may decide me to go/no go for shooting a roll, is the shutter speed. After some google researching I found several simple solutions that may be handy for some of you.
The cheapest solution is to build a simple light detector based on a phototransistor or photodiode, like these ones:
http://mraggett.members.beeb.net/shuttertester/shuttertester.htm
http://www.davidrichert.com/sound_card_shutter_tester.htm
and use the Audacity program as indicated in the article.
It happens to happen that I own a simple storage oscilloscope (a cheap one built by a company called PO.LABS) and I use it instead. The results are quite promising, I've checked the Canonet being out of speed for more than the 50%, so it has stopped me from using it.
Best regards,
Jes.
_________________
Jesito, Moderator 
Jesito's backsack:
Zooms Sigma 70-300, Tamron 35-135 and 70-210 short, 70-210 long, 28-70 CF Macro, 35-70, 35-80, Vivitar 70-210 KA, Tamron 70-250.
Fixed Industar-50, , Tamron 24mm, Tamron 135mm, Sands Hunter 135mm, Pancolar 50mm, Volna-3, many Exakta lenses
DSLR SIGMA SD9 & SD14, EOS 5D, Sony A700 and NEXF3, Oly E-330, E-400, E-450, E-1
TLR/6x6/645 YashicaMat, Petri 6x45, Nettar, Franka Solida, Brilliant
SLR Minolta X300, Fuji STX II, Praktica VLC3, Pentax P30t, EXA500, EXA 1A, Spotmatic(2), Chinon CM-4S, Ricoh, Contax, Konica TC-X , Minolta 5000, 7000i, 3Sxi, EOS 500 and CX
Rangefinders Chinon 35EE, Konica C35 auto, Canonet 28, Yashica Lynx, FED-2, Yashica electro 35, Argus C3 & C4, Regula Cita III, Voigtlander Vitoret (many), Welta Welti-I, Kodak Signette 35, Zorki-4, Bessa-R & L, Minolta Weathermatic, olympus XA2
Compact Film Konica C35V, Voigtlander Vitorets, Canon Prima Super 105, Olympus XA2 and XA3
Compact Digital Olympus C-5050, Aiptek Slim 3000, Canon Powershot A540, Nikon 5200, SIGMA DP1s, Polaroid X530, IXUS55, Kodak 6490, Powershot G9 and G10
CSCCanon EOS-M, Samsung NX100 and NX210, Lumix G5, NEX-F3 |
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