leojar 寫:
Hi Derek,
You can visit my album and you will see. (except the photos taken by the 250/5.6 minolta reflex).
In general, 24-85 is the best in both quality and speed of AF focus. And also it is worth to convert this lens to EOS since it's relatively cheap.
17-35 is the second and it has the top quality in lens building and image formation. Also, AF speed is good.
70-300 has excellent image quality from the range of 70 to 200mm also the macro range at 300mm end. However, the speed of focus from 200 to 300mm is not good. Soft edge image at 300mm /5.6.
100mm is a great lens but once you have the 70-300mm you has no reason to bring this lens out during the trip.
I'm still waiting for the available of 50mm and 400mm conversion.
I have the NX too and all the conversion has positive impact to the AF speed.
Also, I don't think 24-80 and 70-200 are worth to be converted at this moment since the cost of conversion already much higher than the lens itself. Also, the performances of 24-85 and 70-300 are higher than these two lenses.
Hope it help..
Leo
Leo, thanks for your detailed info.