I'm currently shooting with an a850, 20/2.8, 50/1.4, tamy 90 Macro, and Minolta 135/2.8. Generally happy with the image quality and range of lenses I have; however (and there always is one...) on my most recent hiking trip I was feeling like a little more range on the long end would be nice.
Obviously image quality is the most important quality in any new lens, that being said I shoot mostly between f8 and f16. Most lenses I've used perform well at these apertures, or diffraction begins to set in robbing some critical sharpness (not a big deal when the DOF is required). I was thinking of the following kit (image quality should be good, and weight would be acceptable for my backcountry trips):
- 20/2.8 (24/2 only if CA & distortion are significantly better controlled stopped down)
- 50/2.8 Macro (only if image quality matches the 50/1.4 stopped down)
- 70-300/4.5-5.6 G
This kit would be nice and light (relative term I suppose) while extending the long end and keeping some close focus ability. My big concern is the 70-300. Is is going to be as good as the 135 or 90 when stopped down? Any opinions about the 70-300 & 50 macro would be greatly appreciated. I'm also open to any other suggestions.