- 100mm f2 with +2 closeup filter
- 100mm f2.8 macro with +2 closeup filter
- 70-200mm f2.8 @100mm with +2 closeup filter
- 100-400mm @ 100mm with +2 closeup filter
- 70-300mm @ 100mm with +2 closeup filter
all above setup will give the same or similar magnification.
Sweet, I'm so getting one
Using a close-up filter,
focusing distance depend on the diopter value of the close up,
+2, focusing distance is about 0.5m
+4, focusing distance is about 0.25m
magnification depend on the diopter value and focal length of the lens,
see the list of the canon lens with 250D, 500D and 12mm/25mm ext. tube table at
Summary, if you want big magnification for macro photography, try longer focal length like 200mm or longer with +2 or +4 closeup filter.
- 100mm with +2 closeup filter
- 200mm with +2 closeup filter
- 300mm with +2 closeup filter
- 400mm with +2 closeup filter
- 500mm with +2 closeup filter
all above will have similar or same focusing distance but magnification increase for longer focal length.
Does it mean that when you use the Close Up Filter (e.g. 4T or 3T or 250D or 500D), you have to use Manual Focus? e.g. Moving close to the object and moving your lens slowly away from the object until focuses?
Or can we still use Auto Focus?
Why use manual focus?
- When lens focus in short/close-up range, the auto focus tend to hunt a lot.
- Manual focus can adjust magnification or frame the shots by manually turn the focusing ring. To achieve the max. magnification, you need to set the min. focusing distance.