[fai11284]

Can somebody teach me , how 3000D like to 10D (canon DC) pls

[genewch]

Both 300D and 10D use the same model of CMOS. Their cores are the same. Focusing systems, metering systems, noise control are the same. Of course 10D is sturdier, and it provides customized functions. So using a 300D is practically equivalent to a 10D in most aspects.

Since 300D's centre weighted metering is not really a spot metering, there may be some difficulty in metering. Sometimes metering compensation is needed, but this is really part of the training for exposure metering. If you can use it comfortably, I believe that you can use other cameras comfotably too. (I'm still learning proper metering too :)