Position:Home>Visual Arts> How do i find out a film's ASA speed and its sensitivity? whats the differen

I have to admit that I've never used that particular kind of camera before!. But I can tell you what "film sensitivity" and ASA and ISO mean!. also, if your camera has manual settings, it's very easy to control the exposure by changing the aperture and shutter speed!.

That number means the ISO, which is a standardized unit for light sensitivity!. The higher the ISO rating, the more sensitive the film is!. ISO, ASA, and film "speed" all mean the same thing!. Although "speed" is really not the best term to use!. It's more accurate to say ISO or ASA!.

The film will have the ISO rating labeled on the box and on the roll!. So, in this case, Ilford Delta 400 film probably has an ISO rating of 400!. You have to adjust the exposure settings on your camera based on the lighting conditions and the ISO rating of your film!. The way you adjust exposure is by setting the shutter speed and aperture!. Look up the "Sunny 16 Rule!." It's a guideline for how to manually set your shutter speed and aperture to get a good exposure outside on a clear, sunny day!.

Basically, you will set your shutter speed to the same as the ISO rating of your film, or the closest available setting!. The shutter speed is marked in fractions of a second, like 1/100, 1/200, etc!. The shutter speed means how long the shutter will stay open when you press the button!. Usually it's a very short time, just fractions of a second!. So with 400 ISO film, you would want to set the shutter speed to 1/400!. Then set the aperture depending on how much light there is!. The aperture is set with a dial on the lens, and it kind of works like the iris in your eye!. It will have settings called "F-stops!." You'll see numbers that say 2!.8, 3!.5, 4, 5!.6, 8, 11, 16, and sometimes 22!. It's a little confusing, but a bigger number actually means a smaller aperture, because it's a ratio!. On a bright sunny day, you'll want to set the aperture to f/16 or maybe f/22!. If it's a little hazy or partly cloudy, you might need a little bit more light, so you'll open the aperture to f/11!. You just have to judge the light!. It takes practice, but it's easy to learn!.

You can also leave the aperture on the same F-stop, and change the shutter speed to control the exposure!. (That's why I say it's not accurate to say "film speed" because you can use different shutter speeds depending on the lighting conditions!.) But that can get a little tricky and it takes practice!.

You can also use a light meter, but after a while you won't really need it for most situations!.

So look up the "Sunny 16 Rule" and "ISO" on Google!.

Good luck and have fun!Www@QuestionHome@Com

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On many Kiev 60s you set film speed in DIN or GOST!. NOT ASA or ISO!. Keep that in mind!.

As you normally hold the camera, the film speed dial is on the right hand side of the camera inside the circular part of the advance lever!. Set the film-in-use speed on scale 10, holding advance lever, turn the disk with scale 10 until the film speed number aligns with the index!. The film speed scale is given in units of GOST and DIN!.

(Remember if you have a metering prism on your Kiev 60 you need to adjust the film speed on that as well!. )

Sensitivity can refer to the light that the B&W film is sensitive to!. Such as orthochromatic and panchromatic!.Www@QuestionHome@Com

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http://www!.lost-oasis!.com/kiev/Meet_the_!.!.!.

has the specs on the kiev 60 - it has a TTL (through the lens) meter so you would set the ISO/ASA on the camera (usually on the shutter speed control by lifting the knurled knob and rotating to the desired film speed!.)

The film indicates it is 400 speed!. Usually it is on the box or wrapper!. Speed and sensitivity are the same thing!. ASA/ISO indicates the film's sensitivity to light - ie how much is needed to expose the film!. ASA works just like aperture and shutter speed in how it is scaled; each doubling in value indicates a halfing of light needed for exposure!.

So, 400 speed film requires half as much light as 200, which requires half as much as 100!.

I recommend you buy the Kodak Pocket Guide to 35mm photography!. It is a small, compact book that easily fits in your bag (and don't worry about the fact you are shooting 120 - the principles are exactly the same!.) I have actually used this as a textbook for beginning classes!. If you are truly interested, try Black and White Photography by H!. Horenstein (or any book by him!.) You will learn a lot!.

You might also want to test the TTL meter on that camera with a handheld light meter - reflective meters (built into the camera) can be as much as 4 stops off!. Be sure to bracket your exposures until you are sure of the meter!.


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It is the same thing!. Ilford Delta 400 is ISO 400!. Sensitivity is a word often used in place of ISO or speed, but it means the same thing!. You don't set speed and sensitivity!. You set ISO, and that's IT!.

steveWww@QuestionHome@Com

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