Samsung 20mm F2.8
I have just ordered an NX11 with the standard 18-55mm lens.
I am wondering whether to purchase an additional lens at this point - either the 20mm F2.8 or the 30mm F2.0. (since they are both available for lens than £100 on ebay, I imagine the new 45mm F1.8 will be way more expensive? Any guesses as to the price?)
The benefit of the 30mm seems clear since it is much brighter than the kit lens at that focal length F2.0 vs approx F4.2). I would hope to be able to get some amount of background blurring with this lens. Although it is a shame that the 30mm is not an i-function lens.
However, the benefit of the 20mm F2.8 is less obvious since the kit lens can already do approx F3.6 at a focal length of 20mm.
Is the difference between F3.6 and F2.8 sufficient to make this lens worth having?
Or are there other benefits to be gained from this lens?
In my opinion, the main benefit to the 20 mm f/2.8 over either kit lens (18-55 or 20-50) is size, and maybe slightly better bokeh/out of focus areas, but they are pretty close.
The 30 mm f/2 has a definite performance advantage at larger apertures. So if I were to get one of the two, and planned on using the kit lens I would go for the 30. If you just want a couple small lenses the 20 and 30 might not be bad. I use the 16 and 30.
Eric-- hide signature --
I never saw an ugly thing in my life: for let the form of an object
be what it may - light, shade, and perspective will always make it
beautiful. - John Constable (quote)
I do agree with Eric, provided that you have the kit lens with you, to pick one choice, the 30mm is the way forward