Advertisement Category: Want To Sell (WTS)
Equipment Type: Lens
Equipment Brand: Minolta
Equipment Model: 75-300 Big Beercan
Price (S$): 200
It's been sitting in my dry cabinet for ages, selling since I rarely ever use it. Interested parties please PM.
Real Name: DK
Ok this' abit off, but if you consider marrying your gf in future, it's good to consider Canon, else you two will end up with 2 different systems. Sharing is usually overrated but it makes sense in this case. A 2nd hand 40d + kit lens should fit your budget nicely.
If you die die have to go...
Those can't show anything. You have to mount the 500 mirror on both cameras, take something really far away, then compare the result, to see which suits you the most. A55 shouldn't have much problem beating A850 in this test, i believe.
I can't really say since I never use the a33/55 before, and never work in such hot condition, but i think there's a high chance that the camera will have problem. If you die die have to take photo in such condition, i think best to stick to conventional DSLR.
If you want reach, the A55 + 500mm mirror is a good combo. I dare to say the A55 is even better than the A850 for your purpose, mainly because of its (A55) high pixel density, giving you lots of cropping power.
Think of what kind of macro you want to do. The 30/2.8 is good for normal macro, where you don't need to keep distance from your subject. Whereas if you want to do insects, it definitely can't cut it. The Tamron 90 or Sony/Minolta 100 are better choice, but even those ain't long enough at times.