EX-25 and 50-200mm F2.8-3.5 (Non-SWD)

[shengliang1981]

Hi, does anyone know if auto-focus works when EX-25 is used with 50-200mm F2.8-3.5 (Non-SWD)?

What is the max image magnification that can be obtained with this combination?

Thanks.

[holidaydom]

I belive the magnification range can be found on OLY's site under the specs for the EX25...

There's this table which shows the mag. change with various lenses with the EX25 mounted.


But a quick and dirty way of calculating the increase in magnification would be to take 25/(focal length)

So an EX25 with a 105mm Macro lens would give you 25/105 = 24% increase in magnification.

Don't quote me on the above calculation method - I heard if from old bird at photography...

[shengliang1981]

Originally Posted by holidaydom I belive the magnification range can be found on OLY's site under the specs for the EX25... There's this table which shows the mag. change with various lenses with the EX25 mounted. But a quick and dirty way of calculating the increase in magnification would be to take 25/(focal length) So an EX25 with a 105mm Macro lens would give you 25/105 = 24% increase in magnification. Don't quote me on the above calculation method - I heard if from old bird at photography...

Thanks for the info