blametheparents1982 8:57pm, 18 February 2011
I've just received my new sprocket rocket and can't wait to get shooting, but i've got a question about film choice. I've mainly shot with a Diana F+ till now so don't have lots of 35mm film laying around and what i do have is either 100 iso slide film, or 200 iso colour neg but very expired.

I've ordered some 400 iso and 800 iso film as all the reviews i've seen have said the sprocket rocket is very light hungry, but I don't want to wait for it to be delivered.

Do you think i'd have much success using slower film and the (diana) flash for close-up shots, or using the cloudy setting outside (baring in mind it will probably be quite cloudy). I'm well aware of B mode, so know i could increase the exposure time, but when you're out and about that either means blurry photos or finding a convenient flat surface.

Basically, i want to know just how light hungry this camera is?

I guess i could always pop to the shops and pay for some overprice 400, but i'd love to crack out the slide film.

Any comments are appreciated. Thanks!
Gimel Vav PRO Posted 8 years ago. Edited by Gimel Vav (member) 8 years ago
When you set the aperture to ƒ/16, it's a Sunny 16 camera. The Sunny 16 rule says that on a bright sunny day with the aperture set to ƒ/16, the film speed should be the inverse of the shutter speed. Our shutter speed is 1/100″. Setting the aperture to ƒ/16, means that you can use this table to select the film speed:

Sunny 16 Rule for 1/100"

Setting the aperture to ƒ/11 means that you can use the next slower film speed for each lighting condition.

Using a flash with the Sprocket Rocket is interesting because it actually requires a very wide-angle flash. The Diana flash works, but you get some serious drop-off because it's not wide-angle enough. Here is a Diana Flash exposure chart I came up with based on a couple of clues they give us in the manual:

Diana F+ Flash Exposure Table

With the Sprocket Rocket, you can only look at the ƒ/11 and ƒ/16 cells. Let's say you're using 400 ASA film and your subject is 4 feet away. You should be using the ƒ/11 aperture. If they are 2.75 feet away, you should be using the ƒ/16 aperture. If they're 2 feet away, you should use the ƒ/11 aperture and they will be slightly overexposed. If they are 6 feet away, you should use the ƒ/11 aperture and they will be slightly underexposed. If you want to capture ambient light as well, or city lights in a nighttime shot, you can use the "B" setting with the flash. The flash will expose your subject, and the long shutter time will pick up the ambient light.
blametheparents1982 8 years ago
Thanks for the info, it's really useful. I was aware of the sunny 16 rule, but it hadn't really occurred to me that you can just shift it up one by using the next fastest film. Looking out the window today I don't think I'm going to get away with anything less than 400 ISO.
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