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  Previous versions of timballic's message #10943948 « 20/21mm on FF..........yet again! »

  

timballic
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20/21mm on FF..........yet again!


I thought someone might be interested in all the 20mm-ish lenses I uncovered in my researches.

It soon became obvious from going to review to review that a circular pattern was repeated: Lens A better than lens B; Lens B better than lens C; Lens C better than lens D: Lens D better than lens A !

Anyway for what it's worth here's the list with a few comments: (for which I may be shot down in flames!)

Canon 20/2.8 USM............Good edge to edge definition F5.6 on, (contra many reviews), but rather flat.
Canon 17-40/4L .....My copy @20mm, very good edge to edge definition, clarity and contrast, better than OM 21/2
Leitz Elmarit-R 19/2.8 II .......Worthy of 2nd place to Zeiss 21/2.8, but requires surgery and 2x cost!
Leitz Super Angulon R 21/4...............Meh! (For a Leitz) Designed and made by Schneider under licence
Nikkor 20/4 and 3.5Ai........................2.8 AiS better
Nikkor 20/2.8AiS................................. Sharp centre but weak corners, flare prone, vignette, CA
Nikon 17-35/2.8..........................I include because it rates so highly in several comparison reviews (eg 16-9.net)
Pentax K/A 20/4.............................Small and plasticky but reasonable performers
Pentax A 20/2.8..............................All metal and most flare prone of any I came across, rare.
OM Zuiko 21/3.5.............................Tiny "gem" v. highly rated, but 1 stop less depth of field,
OM Zuiko 21/2.....Rated as 2nd only to Zeiss by some, I found centre definition iffy, low contrast, sharp vignette
Sigma 20/1.8.................Widest aperture 20mm but poor performer until 5.6 and even then not among the best.
Voigtlander 20/3.5....Very good centre definition, colour and contrast, but poor edges and wide open, needs F8/11
Zeiss Jena Flektogon 20/4......(Zebra style) Reputation for least distortion, single coated only, reasonable sharpness
Zeiss Jena Flektogon 20/2.8......Not as good as above
Zeiss Distagon Z* 21/2.8.The undisputed "King" Contrasty, sharp and colourful, but moustache distortion.
Zeiss Distagon C/Y 21/2.8............. =1st. Very little difference. Currently more expensive than Z*!



Sep 08, 2012 at 04:49 AM



  Previous versions of timballic's message #10943948 « 20/21mm on FF..........yet again! »