I own f 80 and nikor 28-105 lense.I would like to know that how far is hand held light meters better than the light meter that f80 has.Is it really worth spending so much say like sekonic 508 which will cost not less than us325.
Rajesh, I have the Sekonic 508 since it came out as i find it invaluable with all my manual focus SLR,rangefinder and TLR.With a N80,my suggestion is to forget about it and spend the money on another good lens.As you can do as well with N80 with the 3 metering modes available if you learn how to utilise them properly,especially the spot meter in tricky lighting. With studio set up with multiple flash/softbox setup,the sekonic flash metering function(cord/cordless) will be much more handy than the inbuilt camera meter.
I would only suggest an handheld meter to extend your metering capability beyond that built into the camera. Specifically, a separate meter can provide you metering for lower light levels, incident light metering, and flash metering for studio style flash. For general photography, the built in meter of my N80 is highly accurate, at least as good as a separate meter (which can't take advantage of the camera's ability to precisely adjust shutter speed in finer increments than you can set manually).
Which type of hand held meter are you referring to? There's the reflective type with detachable spot attachments and there's the incident type with the white dome (looks like a golf ball imbedded on the meter).
Some reflected type meters measure only a small portion of the subject, the hand held spot meter. The reflected light meter acts the same way as your N80 meter, it measures the light reflected by the subject. I'd say that the N80's matrix meter would be much more accurate over a variety of situations, since the matrix goes 1 step more by analyzing the data it receives and adjusts the reading internally. With a hand-held reflected meter, you the photographer would have to perform the adjustments.
The incident meter works by measuring the light falling on the subject and therefore would not be affected by overly bright or overly dark subjects like a reflected meter would. Black would come out black and white would be white. Most wedding pros have one of these. Then there's also the flash meter (which is of the incident type) which is indispensable to a studio photographer. This measures flash output. I have the Minolta Flashmeter IV, a superb flash/ambient incident meter.
When properly used, the incident meter would give you a higher ratio of accurate exposures than any reflected meter (built-in or otherwise, except maybe a spot meter in the hands of an expert). But it comes at a price: inconvenience and spontaneity (sp?).
And quite a cost in real money. I find the meter in my new Hasselblad Xpan to be untrustworthy. I checked some prices on multimeters (particularly handheld spot meters) and considering the cost of several hundred dollars US, I'll spot meter the scene with my Nikon SLR bodies instead.