How to pronounce 焦距 in Cantonese (4 out of 5):

分別支援 4 倍同埋 5 倍光學變焦距
They support 4 times and 5 times optical focusing distances, respectively.

Cantonese Sentence Breakdown

分別 fan1 bei6
difference
支援 zi1 wun4
to assist
bui3
(two, three etc) -fold
times (multiplier)
double
to increase or multiply
exceptionally
particular
同埋 tung4 maai4
and; together with
光學 gwong1 hok6
optics
bin3
to change
to become different
to transform
to vary
rebellion
to alter
to turn into
to become
uncommon
unexpected turn of events
accident
changeable
焦距 ziu1 geoi2
focal length
lei4
to leave
to part from
to be away from
(in giving distances) from
without (sth)
independent of
one of the Eight Trigrams 八卦bāguà [八卦], symbolizing fire
separation
departure
to separate
to go away from
to dispense with
to go without
to go against