R
runes
Guest
Was just surfing the Hoya lens website.
Basically, what is the difference between a macro close-up lens and a +4 lens??
Basically, what is the difference between a macro close-up lens and a +4 lens??
Originally posted by ziploc
The Hoya's macro filter has a diopter strength of +10 as compare to the +4 closeup filter, meaning you can get a much bigger magnification and shorter working distance with it. It is also has 2 elements as compare to only 1 in the +4/+2/+1.
To calculate magnification from diopter strength,
Magnification = (diopter strength x lens focal length) / 1000
So, for example you put the macro filter (+10 diopter) on a 50mm lens,
Magnification = (10 x 50) / 1000 = 0.5, or 1:2 life-size ratio.
Originally posted by runes
So, if I have a macro close up lens already, I don't need to buy the +4 lens because the former is better??
Originally posted by wedgee
Sorry, me read areadi still abit lost here...I have a 250D close-up lens, so can I achieve higher magnification of the subject with an additional +10 macro filter??? Me very lousy with lenses....
Originally posted by siron
is there a +10 filter or lens??
How much is it then , do you know? Thanks!Originally posted by mpenza
Hoya has one but is more expensive than the usual +1 to +4 close-up filters.
Originally posted by siron
How much is it then , do you know? Thanks!
Originally posted by mpenza
didn't get a firm quote but I think it's $40++.
Originally posted by siron
Thanks... actually I have a +4 filter now. wanna get the 250D. hmmmm