anyone can help regarding the hoya +4? how does it change the min distance? is it like the 500D where the range hovers around a fixed value? or it just magnifies the image?
Yes, a close-up filter shortens the focusing distance to around a fixed distance. Of course, different diopter rating gives different distance. Just divide 1m by the diopter value and you'll get the focusing distance. E.g, A +1 filter will focus at 1m, a +4 filter will focus at 25cm, etc.Originally posted by denizenx
anyone can help regarding the hoya +4? how does it change the min distance? is it like the 500D where the range hovers around a fixed value? or it just magnifies the image?
Originally posted by denizenx
anyone can help regarding the hoya +4? how does it change the min distance? is it like the 500D where the range hovers around a fixed value? or it just magnifies the image?
Originally posted by denizenx
sorry again... so I can focus on 25cm and below or above? above right? but no infinity.
Originally posted by denizenx
aiyah I'm a bum...
been shooting food rencently, using my 19mm.. so +4 need to get 77mm also..
OR is an extension tube better?
alamak so fickle from ignorance...
Originally posted by denizenx
aiyah I'm a bum...
been shooting food rencently, using my 19mm.. so +4 need to get 77mm also..
OR is an extension tube better?
alamak so fickle from ignorance...
Originally posted by reflecx
Saying that using a +4 will focus at 25cm is inaccurate. The camera will focus at 25cm if you set your lens is focus at infinity. If you set your lens focus to less than infinity, then the actual focal point will be less than 25cm.
Using a +4 close-up lens changes the possible focusing distance from
a (where a is lens min focusing distance) to infinity
to
b to 0.25m
where y is
0.25a / (0.25 + a)