Help to choose lens

Hello

I am going to buy new lens for my photocamera Olympus E-420.

I have two choices Pentacon 300/4 or Soligor 400/6.3

Wich should i choose. I need some advices and if you have some...

Diseases worldwide and what makes the world sick ?

In the United States - from obesity in Africa - AIDS and fly Miss Miss, in The Netherlands and Afghanistan - of drug addiction in Russia from alcoholism. In the public mind to any one part is...

What kind of photo camera you have ? DSLR or Compact

Hello i`m interested wich camera you have and why ?
What is your reasons ?

Diseases worldwide and what makes the world sick ?

In the United States - from obesity in Africa - AIDS and fly Miss Miss, in The Netherlands and Afghanistan - of drug addiction in Russia from alcoholism. In the public mind to any one part is...