AmbientMike Offline Upload & Sell: Off
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bman212121 wrote:
I'm surprised by that AmbientMike, but it certainly could depend upon the conditions.
Using Bryan's tool confirms neither of the 18 - 135s can best the 50mm f1.8, but it absolutely matters what aperture you use.
https://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=809&Camera=963&Sample=0&FLI=3&API=2&LensComp=989&CameraComp=963&SampleComp=0&FLIComp=0&APIComp=3
Take his tool with a grain of salt because it's minimum focus distance and real world won't be as dramatic.
If you compared wide open to wide open, yes the zoom is significantly better, but it's also stopped down 3 stops. By around F2.8 the 50mm 1.8 is doing okay, and at F4 is quite good, better than the zoom. I linked it at one stop brighter, and there is a noticeable advantage to the prime.
If I were ranking 50mm, I think it would go something like this:
50mm f1.4 @ f2.8
24-70 II f2.8 @ 2.8
50mm f1.8 @ f4
18-135 @f5.6
The 50 f1.4 and the 24-70 II are quite close at F2.8 and F4, with the zoom slightly sharper in the center but the prime better across the frame. The 50mm 1.8 @f4 and the 50mm 1.4 @2.8 seem super close, and at f4 both lenses are better than the 50 f1.8.
The 18 - 135 @f5.6 is still noticeably less sharp than any of those combinations while also having a 1 - 2 stops deficit. It likely can be good enough and has several advantages over the 50 f1.8 like build quality and noise, but I'm not sure I would rank the overall image quality higher provided you stopped down primes to where they yield better results.
The big take away is that if you want F2.8, the 50 f1.4 and 24 - 70 II f2.8 will give you F2.8. If you only need F4 the 50 f1.8 should provide good results as well.
The 60 macro seems a bit worse than some of the others, but if it is being focus closer to the chart that might also explain differences. I certainly wouldn't judge it's performance on this test alone. The 17 - 55 @ 55mm f4 seems to be a decent choice as well. The 55 - 250 unfortunately the 55 end is the weaker side of that lens, so comparing it for 50s probably isn't the best choice.
That's my 2 cents, but with the link you can just compare until your head spins and not actually make a decision. ...Show more →
I've certainly gotten nice photos using the 50/1.8, especially using f/4+. I do like that lens.
But I preferred the 18-135 to the 50/1.8 at 1.8 indoors. The IS let me use 1/50 at 1600, and a bit higher f number, IS evened it out a lot. The 50 might be sharper but sharpness isn't necessarily big on portraits.
I like the 55-250, I'm skeptical about the 55 end being not as good, although it's fine if it's better at the long end, use it there a lot, most of the time, although not necessarily on portraits. Although 250mm isn't too long imo. 250mm helps get rid of a bg. Do you really have good luck using 24-70? I'd probably take my chances on 135/2, and have definitely considered 50 sigma art for portraits.
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