Sincerely, I think that at the point in my learning curve where I am at, once I decide on why I need a lens of a particular focal length, prime or tele, nothing but the absolute current market best will do. It may be an OEM lens or it could be a Sigma/Tamron/whatever, as long as it has proven itself as the market leader in outperforming all of it's competition.
I decided a while ago that I will not sacrifice IQ to save a few dollars. I would rather not have the lens for a few months and save up for the small amount that I am lacking, rather than get a lens of lesser quality and "save" a little money. I would never want to settle for anything less than the best in class of what I choose after my research is completed.
That doesn't mean that I will pay some uber-exorbitant price for a lens that I select... I will still aggressively shop around amongst all the most reliable and secure sources I can find and purchase from the one that will give me the best price for my choice. This is part of my research process for all my equipment. Of course, the lenses that I chose, will not be $100 lenses, they will be
expensive... but I am more than OK with that. I consider myself worth the investment.
- I never ask "what lens is good for me"... if you do not know the answer to that yourself, you are NOT ready to buy ANYTHING.
- I do not shy away from doing the research myself, meaning learning everything about the lenses that I want. I can tell you, without exception, EVERY F/-stop of any of my lens' sweetspot and at what focal length.
- I always buy only new with warranty
- I don't mind buying from the USA to save a few bucks
- I don't purchase from
eBay and
RUN away from people with bad ratings on
www.resellerratings.com
- I research thoroughly and read a
LOT and when possible, personally test the items I want to purchase.
- I often spend a few dollars talking to owners over long distance over thhe phone to get personal opinions and experiences. I spent near $30 talking to a guy in England about the 18-50 Sigma.
- The moment before I pull out the credit card, I am 100% sure of what item I want and and how much I want to pay. I've made my choice without reservation. At that point, I stop researching, stop price shopping and place the order... and never look back.
I'm 100% happy with all my choices so far and I know that this system works for me in the sense that I will never make a bad choice or get anything less than a fair deal.
Camera bodies change every couple of years... but
good lenses last decades.