Wide Angle???

[Pooky]

So I'm a bit confused...

Say I have an 18-55mm kit lens for my Sony...

Now what would the difference be between that at 28mm and a 28mm wide angle lens???

 

[SubliminalThought]

both at 28mm should give you the same field of view. A 28mm Wide Angle prime lens will give you much less barrel distortion and a better image quality that a 18-55mm zoom will do at the same setting. But AFAIK in terms of field of view, they should both be roughly identical.

 

[PostmanPot]

The 28mm wide angle lens is probably for full frame cameras that are not subject to a crop factor. 28mm on your camera, because it uses a smaller sensor than a full frame camera, will be multiplied by about 1.5 (42mm). So your 18-55 is actually ± 27 - 82.5.

18-55 @ 28mm and 28mm wide would be roughly the same though.

But 28 x 1.5 is not very wide, it is regarded as wide on a full frame camera though, where there is no crop factor.

http://www.kenrockwell.com/tech/crop-factor.htm

http://en.wikipedia.org/wiki/Wide-angle_lens

 

[Pooky]

Hmm Ok I think I understand...

Can you tell me if this would be a nice lens to invest in? I have purchased an M-mount adaptor with glass for my M mount 50mm f1.4 so I will be able to use it.

This is the lens: http://www.bidorbuy.co.za/item/18675710/Sigma_28mm_wide_angle_lens_for_Minolta.html

 

[PostmanPot]

Hmm Ok I think I understand...

Can you tell me if this would be a nice lens to invest in? I have purchased an M-mount adaptor with glass for my M mount 50mm f1.4 so I will be able to use it.

This is the lens: http://www.bidorbuy.co.za/item/18675710/Sigma_28mm_wide_angle_lens_for_Minolta.html

That lens = a 42mm f2.8 after applying crop factor. Your kit lens will be wider, but won't perform as well in lower light conditions. Don't know anything else about that lens.

 

[Pooky]

Hrmm anyone else?

I have done a bit of research elsewhere on the internet and it seems as if it is quite a nice lens.
What I want to know is if I am going to get better image quality out of it than my current Sony kit lens or my other Minolta MD 50mm lens...

 

[koffiejunkie]

28mm is considered wide in full format terms. 18mm is roughly the same field of view on a crop body. Weather or not it will be a nice lens, depends on your shooting. Why don't you put your 18-55 on 28 and see how you like shooting with just that one focal length? I liked my 35mm as an alternative for 50mm although if I would do it again, I'd probably get a 28mm. It's not particularly wide on a crop body.