Marina Bay Sand at night

[jeffchanjj]

If your focussing point falls on a dark spot, you will most probably not be able to focus since the cameras read contrast for focussing. Other than that, there's no reason why AF won't work for scenes like these.

another possibility...front/back-focusing of his sigma lens? :dunno:

 

[bambang]

Hi All , thanks for all the positive comments and advises . Now I decide to buy two more lens to practice.I need a lens for landscape and animal shooting(eg.bird). So i need your recommendation .Pls help me to select any two of the choices below:
(a)canon EF-S 10-22mm f3.5-4.5 USM
(b)canon EF-S 15-85mm f/3.5-5.6 IS USM
(c)canon EF-S 18-200mm f3.5-5.6 IS
(d)canon EF 100-400mm f4.5-5.6L IS USM
(e)canon EF-S 18-55mm f3.5-5.6 IS
(f)sigma 10-20mm f3.5 EX DC HSM
(g)sigma 12-24mm f4.5-5.6 EX DG HSM
(h)sigma 18-250mm F3.5-6.3 DC OS HSM
(i)sigma APO 80-400mm f4.5-5.6 EX DG OS
(j)tamron AF 18-270mm Di II VC LD Aspherical (IF) Macro

 

[zhehaolau]

Hi there,

I think the lens below are quite appropriate and inexpensive.
Landscape: Tokina 11-16
Bird: Canon 55-250

I don't think you should so quickly jump into buying lens though. Should try to learn a little more about your body and composition. Probably can get 18-55 as it is inexpensive.

 

[bambang]

Is 18-55 suitable for landscape?

 

[uranium2k]

Is 18-55 suitable for landscape?

Sure is a comfortable range.

 

[zhehaolau]

Yes it is suitable.
I am using one currently and don't see myself changing in the next few years

 

[bunnyrei]

Hi Bambang. I know you are really loaded with cash. Seeing how you are already considering buying many more lens when you only have 0 knowledge not too long ago. I think we all agree you should learn more and form your own opinion first about what is good for you. Asking and listing down all lens and ask forumers here to pick and choose for you, you are bound to not get what you wish for once again. Btw can you tell us the shop where you bought your cam and lens from so we can avoid the unscrupulous shop keeper who gives recommendations that will earn him more bucks. Thanks

 

[bambang]

Thanks for all the kind advices. I bought my cam+lens from Edison Electronic PL at sim lim.

 

[MARK1992]

Canon 500D, 550D, 60D and 7D are crop cameras which means they carries a crop factor of 1.6 times the original focal length of a lens (24mm x 1.6 = 45mm)

Canon 5DMKII, 1Ds are full frame cameras which means what u see is what you get (24mm means 24mm)

go google the difference btw crop vs full frame cameras.

Pardon me for being pedantic, but 24mm on any camera will still be 24mm.

You don't change the focal length just like that.

 

[ayatokamina]

i think its your remote problem really. the picture is not blurred but out of focus. not that your remote is faulty, just that it takes some practice to AF with the remote.

i suggest to ditch the remote and just use the timer @ 2s.

18-55 is good enough for landscape, just that you have to stand a bit far away. this is the reason why I don't like canon aps-c cameras, their crop factor of 1.6 is tighter than nikon's 1.5, so you really got to get a wider lens. try shopping for 10-22 next time.

 

[ayatokamina]

Pardon me for being pedantic, but 24mm on any camera will still be 24mm.

You don't change the focal length just like that.

have u ever tried looking at 24mm from 550D and 24mm from 5D?
There's a big difference.....

 

[ismokeweed79]

Pardon me for being pedantic, but 24mm on any camera will still be 24mm.

You don't change the focal length just like that.

Are you sure ?

 

[kwttan]

Pardon me for being pedantic, but 24mm on any camera will still be 24mm.

You don't change the focal length just like that.

Are you trying to make a statement that 24mm is same on both FX and DX body? :sweat:

 

[rickymartin]

Pardon me for being pedantic, but 24mm on any camera will still be 24mm.

You don't change the focal length just like that.

Rubbish.

 

[MARK1992]

have u ever tried looking at 24mm from 550D and 24mm from 5D?
There's a big difference.....

Are you sure ?

Are you trying to make a statement that 24mm is same on both FX and DX body? :sweat:

Rubbish.

Angle of view changes. Focal length doesn't.

 

[bunnyrei]

Angle of view changes. Focal length doesn't.

Mark is spot on here. It's always a wrong use of terms when it comes to describing this.

 

[MARK1992]

Mark is spot on here. It's always a wrong use of terms when it comes to describing this.

Thank you. I was just waiting for someone like you to chime in.

 

[kei1309]

Angle of view changes. Focal length doesn't.

angle of view changes with focal length. NOT sensor size, though it plays a part when you're talking about FF bodies and Crop Sensor bodies.

let's compare a 24-70mm lens, any brand.

i'm using a Sony Alpha A550 with a sensor size 1.5x smaller than that of a Fullframe sensor body A900.

if i use the 24-70 lens on my A900, it shows me the angle of view of 24mm at the widest.

however, if i use the 24-70 on my A550, i would get a narrower angle of view of 36mm at the widest. because of the smaller sensor size, i multiply the focal range by 1.5x. so 24-70 on my A550 is actually 36-105mm (ok my math in school almost FAILED so please correct this if i'm wrong).

now, if i zoom in the 24-70 on the FF A900 to 36mm and see the image that i get. it'll be the same as the widest on my A550.

hope that helps. seniors please correct me if i'm wrong. because i'm still feeling the buzz from my drinking session last night:sweat:

 

[MARK1992]

angle of view changes with focal length. NOT sensor size, though it plays a part when you're talking about FF bodies and Crop Sensor bodies.

let's compare a 24-70mm lens, any brand.

i'm using a Sony Alpha A550 with a sensor size 1.5x smaller than that of a Fullframe sensor body A900.

if i use the 24-70 lens on my A900, it shows me the angle of view of 24mm at the widest.

however, if i use the 24-70 on my A550, i would get a narrower angle of view of 36mm at the widest. because of the smaller sensor size, i multiply the focal range by 1.5x. so 24-70 on my A550 is actually 36-105mm (ok my math in school almost FAILED so please correct this if i'm wrong).

now, if i zoom in the 24-70 on the FF A900 to 36mm and see the image that i get. it'll be the same as the widest on my A550.

hope that helps. seniors please correct me if i'm wrong. because i'm still feeling the buzz from my drinking session last night:sweat:

Taking the crop factor into account isn't simply multiplying the focal length by 1.X times and proudly proclaiming that the new focal length is 1.X times before.

Focal length does not change unless you are zooming in, or zooming out.

The last bit about 36mm on the A900 looking the same as widest on the A550 is correct, but only because they share the same angle of view.

However, saying that "i would get a narrower angle of view of 36mm at the widest" is not correct. "You will get a narrower angle of view of XX degrees at 24mm which is equivalent to 36mm on a full frame sensor." - Now this would be correct.

I do suggest each party does their own research. I know I have.

 

[nitewalk]

Taking the crop factor into account isn't simply multiplying the focal length by 1.X times and proudly proclaiming that the new focal length is 1.X times before.

Focal length does not change unless you are zooming in, or zooming out.

The last bit about 36mm on the A900 looking the same as widest on the A550 is correct, but only because they share the same angle of view.

However, saying that "i would get a narrower angle of view of 36mm at the widest" is not correct. "You will get a narrower angle of view of XX degrees at 24mm which is equivalent to 36mm on a full frame sensor." - Now this would be correct.

I do suggest each party does their own research. I know I have.

Would it be correct to say that, the focal length depends on the lenses, whereas the cropped sensor altered the angle of view which gives a 50mm lens a 80mm equivalent view on a camera with 1.6X crop? Analogous to the cropping in PP, when we can actually get a "closed up view" by cropping?