Wanna know why is fast lens so expensive?

First of all, why all photographers love fast lens?
because some time we are not allowed to flash
some time, light too little
and most of the time, we want the subject to be stand out (thanks to BOKEH)

same thing, why all gals love diamond? the bigger the better
as a result, the bigger the pricier
why?

they are all come from same family, that is, EARTH
prime lens, it is easier to build because the manufacturer just has to ensure it is sharp at that focal length, and not much elements move inside during focusing. so, you will see f/0.95 at leica, f/1.0 on Canon L lens, f/1.2 on Canon again (good job canon) and f/1.4 on most of other brands

however for a zooming lens, one has to make sure it is sharp for entire zoom range. as u zoom, the elements inside has bigger changes compare to prime. so, to make a fast lens here, the glass must be bigger (yeah, this answer why bigger diamond more expensive lor)
so, most of the prime lens filter start from 49mm while zoom lens 77mm

all sifus, correct me if i m wrong lo... hehe

i'm not really sure though...

but as i know, 18mm till 70mm range are easy to get better optical quality. so lenses at this range normally has better optical quality if you compare apple to apple. and they are relatively cheaper than other ranges...

and also i heard from a friend of mine, he said zooming power more than 5x is going to decrease the optical quality. so he never used 18-200mm or 55-250mm (for example).

wel, i have no firm answers... just share what i've been told...

good tips from george n derrick thanks for sharing

Derrick, for zooming power, get prime lens eg. 400m, 500m, 600m or 1000m

Simmon, that one no longer considered zoom lens I think. More to a telephoto. Fixed focal range ma, "can't zoom in or zoom out".

More than 5x, my 18-105 = 5.8+. Alamak, will keep in mind on this when I shop for new lens . Thanks for the info.

thanks for sharing...

=.= thats the reason why the 18-105 produces such a bad quality photos. However it really good for beginner becuz it combines wide angle, portrait, tele, and little bit macro. anyway, thanks to both nice information

Max now talk about prime lens liao ahaha 105mm macro

max, last time i wanted to buy 55-250, i asked my friend's opinon. he said zoom more than 5x, so he asked me not to buy.... no prove so hard to say also...

nikon kit lens (d90) is 18-105. i dare not to say whether the IQ is good or bad. but my 18-55 is a bit darker... hahaha personal feel only...

yes, the higher zoom the lower its IQ
get 1.5X to 2X is enough
unless it is for light and traveling purpose.

Thanks for sharing the knowledge, George.

my pleasure to share
in other word, better invest into lens instead of body
for example
canon L lens 50mm f/1.0 now the price is already 5 figures
just like a diamond

i don't even know there is a canon L 1.0 lens.. ha ha.. i though the lowest is 1.2...

it has but only make very limited unit
go flickr and search
u will see the DOF is very shallow
suitable for extremely low light and can shoot with light from just 1 candle

this the lens Canon 50mm F1.0 look llike 50mm F1.2

Hanne, u getting this lens soon?

Hanne's next lens on list is definitely a macro lens. Since he found his kaki macro already.

i still got a lot wish lens


1. Canon 100mm F2.8 L



2. Sigma 12-24 UWA


3. 70-200mm F2.8 L IS


must buy 4D kau kau liao.... simmon 1355?

hahaah... bro, go get 70-200 first...

all three i like.. but no money.. poor poor...

derricklim wrote:hahaah... bro, go get 70-200 first...

canon set RM7450 expensive man.... have to wait dunno how long hehe

off topic:

1355 20big 120small, Saturday & Sunday, 3 sides

hahaha... all crazy liao...

Put some poison


Sigma 12-24mm @ 12mm ; F5

Well, for outdoor. This lens is good; but indoor abit lose cause at max only F4.5 which is not enough especially low light environment. But since this lens built for Full Frame; well can say boost high ISO...but the image quality not tat nice loh.

Much prefer at least F4 for all rounder ($$$ VS lens capability).

No filter can b use...so have to extra careful when handling it especially crowded area. Built quality wise...as Sigma brand...ya getting closer to OEM brand lens rather old Sigma design which not so solid.

So far..quite happy about it but if budget allow; better get F2.8. Haha. (tat 1 stupid also know lah...rite?)

it is so obvious NIKON color
poisoning man
jump or not jump?