So i'm still pretty new to all of this, but a while back i got a t1i with the kit lens (18-55) to work on some product photography for my company. Recently, i picked up the canon 60mm 2.8 macro and i've fallen in love with primes. I'm going to be leaving for Japan in 3 weeks for business (i'll be gone 3 months) and i want to get another lens before i go. I've pretty much stopped using the 18-55 now and i shoot primarily with the 60mm. I think i want a more wide angle prime, but i cant decide if i really want a prime or if i just want a better zoom than the kit lens. I'm really digging the sharpeness of the prime (especially because the 60mm is crazy sharp) and i like the wide aperature. What do you guys think would be a good lens? I'm trying to keep it under $400 which drastically limits me.
Some ones i'm thinking about are:
canon 28mm 1.8
canon 28mm 2.8
canon 24mm 2.8
canon 20mm 2.8
sigma 24mm 1.8
sigma 20mm 1.8
sigma 30mm 1.4
tamron 17-50 2.8
What do you guys think? Are there other ones that would be better?
If it makes a difference, i'll be shooting lots of pictures of knife forging and kitchen knives as well as a few group photos of people.