Conventional wisdom has told us to use TC only with prime. With a 2X TC, it is not advisable to use with a consumer grade lens. With a limited budget, I have to defy the conventional wisdom and get the cheapo TC to a work out
My 600mm rig stands tall and it is hand-holdable in 600mm.
Tamron 70-300 Di LD
Tamron-F 2x KR MC4 TC
Tamron 70-300 Di LD
Tamron-F 2x KR MC4 TC
The TC has 6 electrical contacts with aperture metering all pass through TC from lens back to body. 'A' metering is available and manual focus at 600mm is still feasible. Some test pictures done with Pentax K10D
70mm perspective without TC
300mm without TC
600mm with Tamron 2x TC
600mm with Tamron 2x TC
Impressions & Notes:
- Feasible to hand hold the TC + Tamron lens as walk around as all are pretty lightweight
- AF is lost with the TC
- No SDM contacts noted in the TC
- 2 stop loss in metering, effectively 600mm at f/11.00, quite taxing
- TC not suitable for shots with movement
- SR works quite well though with static objects
- Due to manual focus lens, SR focal length can be dialed in correctly for 600mm in the long end.
- SR is found to be effective.
- Expect better sharpness with use of tripod
- Expect better sharpness with use of better lens as a prime
Related:
0 comments:
Post a Comment