| Review statistics for sewerynthegreat | | | Lenses Added | 1 (View Lenses Added) | | Reviews Posted | 6 (View Reviews) | | User's Lens View Count | 21,735 | | Latest Lens Addition | 
Kenko 2X KAX Teleplus MC7 | | Latest Review Posted | Sigma DC Macro 17-70mm F2.8-4.5
After last holiday while using mainly DA 18-50 which done good job I realized that while small and WR new kit is sadly slow, not super sharp and it's range is not versatile enough.
I found this lens and decide to give it a try.
17mm vs 18mm gives a bit more range, 50 vs 70mm is significant better especially after taking into account that kit is 5.6 at 50mm while Sigma is 4.5 at 70mm and f4 at 50mm i.e much faster.
f2.8 for 17-21mm
f3.5 for 22-35mm
f4.0 for 35-50mm
f4.5 for 50-70mm
Good new is that at long end it is really sharp from f4.5.
Sadly at wide end it starts to be sharp only after f4 and literally super sharp at f5.6. F2.8 to f3.5 can be useful but are rather soft.**
**Update 1. Lens can at times be sharp even at f2.8. I suspect that it is related to AF. Literally I can take photo of some subject and it will be soft, and one minute later I can take exactly the same photo (the same settings, subject, light) and it is sharp.
**Update 2. Lens is much sharper when focused manually. After adjusting focusing using AF FINE ADJUSTMENT function(-6) on my K-70 photos started to be sharp straight from f2.8.
At 50mm f5.6 it is as sharp as DA 50mm f1.8 at 5.6
At 17 mm it is significantly sharper then relatively sharp new kit DAL 18-50 at 18mm.
http://i30.photobucket.com/albums/c337/SeverusR/IMGP6840l_zpsg6gvk70z.jpg http://i30.photobucket.com/albums/c337/SeverusR/IMGP6852k_zpsz4fpcha7.jpg
There are some aberrations but less then in DA 18-50 and much less then in DA 18... | |
