• It isn't possible to generalize the wattage of any lamp to its light output. Every different manufacturer's product could be different and they often are. One way for manufacturers to compete is to say that their lamps are more efficient than some other brand. (e.g. "G.E. lamps produce more candle power per watt than Sylvania.")

It isn't possible to generalize the light output of any lamp in actual use based on its specs. Like others said, burning a lamp in one place (country) could produce different amounts of light due to different voltage, current and frequency.

It isn't really the brightness of a lamp in an enlarger that determines how photographic paper is exposed. It is the amount of light per unit of square measure. If you take a lamp of a certain brightness and shine its light through a lens so that its light is spread over a piece of 8x10 paper you will get a different exposure than if you spread that light onto a 4x5 piece of paper.
(For purpose of discussion, this assumes that ALL of the light goes onto the paper and nowhere else.)

1) Candle power is an archaic measurement that isn't used anymore.
2) Light intensity is usually measured in lumens but candle power and lumens don't measure the same thing.

Candle power measures the perceived brightness of a light source from a certain direction but lumens measure the total light output in all directions.

Take a candle of a certain size which is made of a certain kind of wax. Light it and make it burn at a certain rate then look at it from a certain distance. That is one candle power.

Take that same candle and put it inside an opaque sphere which is perfectly mirrored on the inside. Open a small portal in the sphere and use a photocell to measure the intensity of the light coming from that portal. You would be measuring how many lumens the candle produced.

You can not say that a lamp of a certain wattage will burn with a certain brightness and you can not directly compare candle power to lumens but you can say that there are APPROXIMATELY 12.57 lumens per candle power.

Your average 60 watt household light bulb produces 650 to 700 lumens when burned under standardized conditions.

650÷12.57=51.7

700÷12.57=55.6

Therefore you can estimate that a 60 watt household light bulb, burned under average household conditions might produce somewhere between 50 and 55 candle power, give or take...

If that don't do what you need, try a 50 watt or a 75 watt bulb.