Lui
Hi,
I’m looking for a second-hand IR filter (715 / 88A) with a diameter of 52 cm (preferably 55 cm).
Does anyone have one to sell at a reasonable price?
Best regards,
Lui
cfb_de
Hi Lui,
centimetres? That’s going to be expensive.
SCNR,
Franz
Lui
I meant millimetres, of course :P
Best wishes
Lui
Lui
I've just ordered one. :P
Best wishes
Lui
cfb_de
Not really. IR filters are the sort of thing that only people with a genuine need buy. That’s why there’s virtually no second-hand market for them, and the prices on eBay are getting alarmingly close to the retail prices. Some ePay-obsessed idiots are even bidding well above the retail price.
Best regards,
Franz
Lui
Unfortunately, I’ve noticed that too.
The order arrived yesterday at lunchtime. Heliopan 715 for €49.95
WaldemarSchmid
Good morning,
My experience with three rolls of Efke IR 820 film:
Cokin gelatine filter from the Ilford SFX Promo Kit (695 nm)
Handheld light meter, measured without filter; values transferred to the camera without correction
Roll films, pre-soaked, Ultrafin liquid developer
Mid-May, 2.00 pm to 3.30 pm
1st roll set to 6 DIN/3 ASA, developed like Efke 100 -> underdeveloped, due to underexposure
2nd + 3rd rolls: set to 2-3 DIN, development time extended by 30% -> developed correctly.
Blue sky with pretty little clouds, sun not behind clouds: perfect (typically f/8, 1/4 sec).
Hazy, white cloud cover: about 1 stop of underexposure, still usable.
Dark rain cloud cover: at least 2 stops of underexposure, unusable.
The film is a bit finicky; for 35mm I’d use a proper fine-grain developer. I don’t know why the results are like this when the sun is behind the clouds; I’d have expected the opposite. I think this information will help you get started.
Wait to judge until the film is dry; typical of Efke, it looks very thin when wet.
@Mirko: I think it’s great that you’ve revived this film; it’s much more usable than SFX and Rollei, and the price is very fair. But I do have one criticism: I’ve just received my third order, 10 roll films. The first was packaged normally: cardboard box with batch number and date on the outside, development instructions inside, and a label printed with the film name. The second and now these 10 came in the plastic tins from CHM (which I like), but they were completely ‘neutral’: no sticker, no note in the tin, and an unprinted label. I don’t think that’s very good, especially as there are no development instructions in your catalogue either.
And another idea (perhaps nonsense, I’m no expert): As far as I understand it, the Efke IR is an Efke 100 with an additional Sensitizer. What if one were to omit the “normal” Sensitizers? I’m thinking of the Konica 750, which was only sensitised for blue and dark/infrared. Advantage: you can use any existing dark yellow/orange/red filter, there’s no need to buy an expensive special filter, and the filter can stay on the camera when adjusting settings.
Regards, Waldemar Schmid
Lui
Hello Waldemar,
Thank you very much for your information. It will certainly be of help to me.
As I unfortunately mentioned in another thread, I exposed the Efke IR820 at ISO 12, 6 and 3 and developed it in Rollei RHS for 6 minutes (according to several sources). It came out completely underexposed; there’s almost nothing on the film.
But thanks for the tip about the Efke 100; I didn’t know that, so the development is naturally easier. Which developer do you use?
Which time did you mean for the Efke 100 – the one for ISO 100???
Regards
Lui
WaldemarSchmid
I used Tetenal Ultrafin liquid 1 + 20 as the developer; that’s the exposure time I’ve found works best for the 100 Efke/ADOX. I believe that’s supposed to be the basis for the IR 820.
Regards, Waldemar
