07-06-2020, 06:39 PM
(07-06-2020, 06:19 PM)Brightcolours Wrote:(07-06-2020, 05:52 PM)davidmanze Wrote:(07-06-2020, 03:46 PM)Brightcolours Wrote:(07-06-2020, 03:27 PM)davidmanze Wrote:(07-06-2020, 03:02 PM)Brightcolours Wrote: 1:39X is still not a thing, no matter if you write G1 or G2. Both do 0.26x, by the way.The G1 has a MFD of 2.7 mts and a 1:5 ratio
What do you mean by a thing exactly ??
It is either something is either a ratio (1:2 for instance) or a magnification (times something), like 0.5X. So not 1:39X. And 1:39 would be 0.0256x max. magnification, which does not seem right either.
I'm now confused too about maths .... but which ever way you roll the dice a ratio of "1:0.14" is pretty poor on the magnification scale of things ......
Tamron G2 MFD max mag 1:0.39 ..... magnification equals 0.39 squared = 0.1521X ...... maybe
Hehee...
No.
Tamron 150-500mm magnification: 1:3.9. So about 1:4. Meaning: 4 times the film/sensor width is the minimum with the subject can have to be frame filling. That is about 0.25x max. magnification.
Calculate one from the other notation:
1:3.9 -> 1 / 3.9 = 0.2564x
Or if you have 0.25x -> 1 / 0.25 = 4 -> 1:4 ratio
Both the G1 and G2 have the same max. magnification.