playing with exposure?

<p>just a simple question, what if I shoot ASA200 negative at ASA100, will this over-expose too much?<br>

I am using an older semi manual nikon EM that has no exposure comp other then the ASA dial.</p>

<p>It should come out okay as negative film is very tolerent to improper exposure.</p>

<p>what if these films are really ASA100 marketed as ASA200 for whatever reasons.<br>

how would this afect processing?<br>

I mean under exposing.</p>

<p>Overexposing color negative film (within reason) will reduce grain and make for easier to scan files. I generally keep my exposure compensation to +1. I do not recommend underexposing by any amount.</p>

<p>Roger tell me the effects of underexposing pleas<br>

I really think this cauld be my problem<br>

thank you</p>

<p>Underexposure means give the film less exposure [to light], which will make it darker. Overeposure means give more exposure than what would be needed to make the image look the way you see it resulting in a brighter or lighter image.</p>

<p><i>" tell me the effects of underexposing..."</p></i>

<p>I find that underexposure tends to produce muddy greys in the shadows (with minilab scans/prints).</p>

Just read your other thread. Colours tend to be less saturated with underexposure. With centre-weighted metering (as on your EM). try to meter off a 'middle gray' (for example, grass in sunlight). Rating your film at a lower EI may help but depends on your metering habits.

<p>Thank you Songtsen (you nailed it) of corse I didnt ask the right questions being a novice and my english is off by at least 2 stops, but somehow your answers make perfect sens to me, bravo!<br>

kind regards</p>