IbrahimO said:
Hello,
What lenses would you recommend (in terms of bang-for-buck) to be adapted to NEX bodies to get a 35mm equivalent focal length?
i've been looking at my options (21-25mm, ideally 24mm) manual lenses, (rangefinders, Canon FD, Nikon, Olympus, Minolta MD...) and i am overwhelmed. as i have no experience with film photography i can't really evaluate the lenses.
When it comes to legacy lenses, good deals generally ends at 28mm. Going wider usually means significant increase in price and narrower offer.
There are many great 28 and longer legacy lenses, that can still challenge their modern counterparts, for less money, but bellow 28, situation is more complicated.
Traditional brands all have some rather good options, but the best of those are probably above your estimated budget - Canon FD 24/1.4 L,Canon FD 24/2, Minolta 24/2 MD, Nikkor 24/2, Oly 24/2 etc.
The ones that you might try are cheaper - f/2.8 siblings, but while most of them are solid lenses, in direct comparison with modern alternatives, especially at wide apertures, they shows their age.
On the other hand, once stopped to f/5.6 or f/8, most of them will come very close in resolution across the frame, that it will be hard to distinguish. But, CA, spherical aberration, coma, and some other aberrations are usually better corrected in the new lenses.
So, it is very important to consider what exactly you want to shot with your 24mm lens. Especially for 300 USD price range. In other words, if you can live with slower aperture, your options will be wider.
Let me try to put this in perspective with few comparison ISO chart 100% crops. Not because, I want to show you valid figures in terms of resolution, (this was not well controlled test, mainly because of a bad lighting) but just to give you an idea of differences that I am talking about.
Don't forget that even more than resolution, you should pay attention about flaring behavior, bokeh characteristics, minimum focus distance, build quality and price of course.
First, let's see how Canon FD 24/2.8 S.S.C cope with SEL 1855 kit lens (set to 23mm by mistake).
Canon FD 24/2.8 S.S.C vs Sony SEL 1855 at 24/23mm and f/4 center
In the center, difference is negligible. Canon has slight edge, but nothing significant.
Canon FD 24/2.8 S.S.C vs Sony SEL 1855 at 24/23mm and f/4 top right
In the corners, difference is rather significant. My SEL 1855 is also de-centered, but so is my FD/NEX adapter. Therefore, different corners might get closer to each other, but this show general tendency of the kit lens corner performance at its widest aperture (at 23mm).
Buying Canon FD 24/2.8 S.S.C, you might want to use it wide open. Let's see how it compare with SEL (Zeiss) 24/1.8
Canon FD 24/2.8 S.S.C. vs Sony SEL 2418 on Sony NEX 5N at f/2.8 center
Now, we can see reversed situation. Sony 24/1.8 has an edge no doubt. (It is also two stops closed, while Canon is wide open.) But in the center, difference is once again rather small.
Canon FD 24/2.8 S.S.C. vs Sony SEL 2418 on Sony NEX 5N at f/2.8 top right
Sony gets on top in the corners easily. You might check in my albums here in my gallery, other corners, and you should notice significant CA on Canons side. Well, it is a bit older lens than Sony right?
I have read here several times, that some people are disappointed with the sharpness from Sony SEL (zeiss) 24/1.8, as they expect it to be much sharper than their kit lens. Needless to say, they are comparing both lenses at f/4 or smaller apertures, where most lenses are getting very close, at least in the center. I don't want to blame them, but it is good to understand, that comparing lenses of different maximum apertures is very academical at its best. In Leicas words - if you don't need faster lens, save your money and buy slower one. Anyway, here is brief comparison of the two.
Sony SEL 2418 vs Sony SEL 1855 on Sony NEX 5N at 24/23mm and f/4 center
While SEL 24 f/1.8 has an edge in the center, it is obviously not as much as one would expect from almost 800 USD more expensive lens. As SEL 24 f/1.8 is also optimized for short distances, at longer ones, the difference can be even smaller if any.
But Sony SEL is also very well optically corrected for field curvature and spherical aberration. Maybe slightly over corrected as in fact it shows pincushion distortion instead of barrel which is more obvious. That, in combination with probably larger projection circle, result in a very good corner performance as we can see on the above comparison against Canon FD. Here it is aginst kit lens at f/4.
Sony SEL 2418 vs Sony SEL 1855 on Sony NEX 5N at 24/23mm and f/4 top right
Not even a contest, and my SEL 1855 despite being de-centered is still sharper in the corners than two samples of 1650. But most people will shot a normal "real life" scene instead of a flat target, and in such circumstance will hardly notice weaker corner performance. Therefore I understand, why some are disappointed, that Zeiss didn't make such a difference.
To put things little more in perspective, let me show you another example of a really bad legacy lens, wide open, in comparison to one of the very best 24mm performers in 35mm world.
Nikon Nikkor 14-24 f/2.8 G vs Makinon 24/2.8 MC (FD mount) on Sony NEX 5N at f/2.8 center
Now this sucks right? Could be bad sample, but more probably it is just bad lens. It cost 30 USD, and I didn't expect it to perform as the one on the left, that cost almost 2000 USD. However...
Nikon Nikkor 14-24 f/2.8 G vs Makinon 24/2.8 MC (FD mount) on Sony NEX 5N at f/5.6 center
Stop Makinon down to f/5.6, add some (well quite a lot) of contrast in pp, and you will have hard time to say which is which. (extreme corners remains weak on Makinon though, but I can imagine the lens to be used at f/4 and above for some street or family snaps).
Some users like Kiron 24/2, Sigma super wide 24/2.8, and similar. From that group, I found Tokina 24/2.8 RMC to be a solid performer, but none of those, that I had was really stellar. That could be of course, due to the sample variations.
I kept only Canon FD 24/2.8 S.S.C from legacy 24 (and Makinon of course, cause none wants it

).
(I will check tomorrow another Olympus 24/2.8 in my local store, as I liked that lens quite a lot, and shouldn't probably sell it.)
Here are few more shots with Canon FD 24/2.8 S.S.C from a "real life" (whatever that means

)
Sony NEX 7 + Canon FD 24/2.8 S.S.C
Sony NEX 7 + Canon FD 24/2.8 S.S.C
Sony NEX 7 + Canon FD 24/2.8 S.S.C
Sony NEX 7 + Canon FD 24/2.8 S.S.C
Sony NEX 7 + Canon FD 24/2.8 S.S.C
--
Don't trust your eyes or mind, they might betray you! Trust only comments posted on the forums, because there is the absolute truth!
viktor_viktor
Photototo