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Is there any alt 28mm or 24mm lens that is sharp from cor...
  
 
rsrsrs
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p.2 #1 · p.2 #1 · Is there any alt 28mm or 24mm lens that is sharp from corner to corner


Does anybody tried the Canon Ultrasonic 20-35mm EF 1:3.5-4,5 stoped down to f8?
I only found different results in the www?



Oct 01, 2017 at 08:07 AM
artificialyello
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p.2 #2 · p.2 #2 · Is there any alt 28mm or 24mm lens that is sharp from corner to corner


rsrsrs wrote:
Does anybody tried the Canon Ultrasonic 20-35mm EF 1:3.5-4,5 stoped down to f8?
I only found different results in the www?


That's not an alt lense, and that was that that you asked for so you should be better served at the Canon forum, but:

http://www.imaging-resource.com/lenses/canon/ef-20-35mm-f3.5-4.5-usm/review/



Oct 01, 2017 at 08:26 AM
rsrsrs
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p.2 #3 · p.2 #3 · Is there any alt 28mm or 24mm lens that is sharp from corner to corner


You are totally right, old but not alt.
Thx for the link.



Oct 01, 2017 at 08:54 AM
artificialyello
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p.2 #4 · p.2 #4 · Is there any alt 28mm or 24mm lens that is sharp from corner to corner


Since you're here. If cost is an issue and you want a native EF lense and are prepared to stop down to f/8 then you could consider the 17-40/4:

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=1073&Camera=979&Sample=0&FLI=2&API=4&LensComp=100&CameraComp=979&SampleComp=0&FLIComp=2&APIComp=3



Oct 01, 2017 at 10:39 AM
JohnJ
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p.2 #5 · p.2 #5 · Is there any alt 28mm or 24mm lens that is sharp from corner to corner




artificialyello wrote:
Since you're here. If cost is an issue and you want a native EF lense and are prepared to stop down to f/8 then you could consider the 17-40/4:

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=1073&Camera=979&Sample=0&FLI=2&API=4&LensComp=100&CameraComp=979&SampleComp=0&FLIComp=2&APIComp=3


I've never found the 17-40L sharp in the corners even at its best aperture, even on a canon 5D2.



Oct 01, 2017 at 11:10 AM
jcolwell
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p.2 #6 · p.2 #6 · Is there any alt 28mm or 24mm lens that is sharp from corner to corner


artificialyello wrote:
Since you're here. If cost is an issue and you want a native EF lense and are prepared to stop down to f/8 then you could consider the 17-40/4:


JohnJ wrote:
I've never found the 17-40L sharp in the corners even at its best aperture, even on a canon 5D2.


I agree.



Oct 01, 2017 at 11:26 AM
artificialyello
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p.2 #7 · p.2 #7 · Is there any alt 28mm or 24mm lens that is sharp from corner to corner


JohnJ wrote:
I've never found the 17-40L sharp in the corners even at its best aperture, even on a canon 5D2.


FWIW: The OP asked about the 20-35mm EF 1:3.5-4,5... Whatever. Look at the crops from TDI. Fix the chromatic issues in post and the difference between the featured lenses aren't that big. At f/8...



Oct 01, 2017 at 11:53 AM
JohnJ
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p.2 #8 · p.2 #8 · Is there any alt 28mm or 24mm lens that is sharp from corner to corner


artificialyello wrote:
FWIW: The OP asked about the 20-35mm EF 1:3.5-4,5... Whatever. Look at the crops from TDI. Fix the chromatic issues in post and the difference between the featured lenses aren't that big. At f/8...


FWIW, my comment addresses the OP's search for a 24 or 28 lens sharp in the corners, which I'd suggest the 4/17-40 (which you initially mentioned, not me) is not, at least not in my experience.



Oct 01, 2017 at 12:28 PM
artificialyello
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p.2 #9 · p.2 #9 · Is there any alt 28mm or 24mm lens that is sharp from corner to corner


JohnJ wrote:
FWIW, my comment addresses the OP's search for a 24 or 28 lens sharp in the corners, which I'd suggest the 4/17-40 (which you initially mentioned, not me) is not, at least not in my experience.


Top post on this page:

rsrsrs wrote:
Does anybody tried the Canon Ultrasonic 20-35mm EF 1:3.5-4,5 stoped down to f8?
I only found different results in the www?


My comment about the 17-40/4 was made in the following discussion with the OP. Feel free to appoligise...



Oct 01, 2017 at 12:42 PM
JohnJ
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p.2 #10 · p.2 #10 · Is there any alt 28mm or 24mm lens that is sharp from corner to corner




artificialyello wrote:
Top post on this page:

My comment about the 17-40/4 was made in the following discussion with the OP. Feel free to appoligise...

Again, i was only referring to the 17-40, doesn't make any difference what other lenses you or the op referred to because i wasn't commenting on any lens other than the 17-40.



Oct 01, 2017 at 12:56 PM
 

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artificialyello
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p.2 #11 · p.2 #11 · Is there any alt 28mm or 24mm lens that is sharp from corner to corner


JohnJ wrote:
Again, i was only referring to the 17-40, doesn't make any difference what other lenses you or the op referred to because i wasn't commenting on any lens other than the 17-40.


I mentioned the 17-40/4 in a comment to the OP's asking about the 20-35 non L. My first post in this thread was this one, BTW.

http://www.fredmiranda.com/forum/topic/1510860/0#14201036

The above mentioned offer still stands... :-))



Oct 01, 2017 at 01:05 PM
dimitris77
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p.2 #12 · p.2 #12 · Is there any alt 28mm or 24mm lens that is sharp from corner to corner


I have used the old Nikkor 28mm f2.8 ais and it was exceptional.


Oct 01, 2017 at 01:07 PM
sebboh
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p.2 #13 · p.2 #13 · Is there any alt 28mm or 24mm lens that is sharp from corner to corner


dimitris77 wrote:
I have used the old Nikkor 28mm f2.8 ais and it was exceptional.


the nikkor is a great lens, but better up close and at medium distance than at infinity. for reasonable priced slr 28mm lenses i'd pick the nikkor 28/2.8 AIS or the c/y 28/2.8 copy variation will probably be as big as performance differences between the two (the nikkor is better for flowers though imho). the pentax K 28/3.5 also looks very competitive in the comparisons i've seen, but i've never shot it. the OM lenses tend to be more even across the frame (less sudden drop off at the corners, but have less biting sharpness midframe and tend to have a little less bite in general (also more vignetting).

i don't really have any recommendations for 24mm. i like my plain MD 24/2.8 better than the OM 24/2.8, canon FD 24/2.8, and the nikkors. haven't tried the canon or OM 24/2s. my MD has a midzone dip that doesn't clear up till f/13 too.

regarding the contax g 28/2.8 i recommended earlier here is a comparison of the lens on an A7 at infinity with various different correction filters (the 1.5m PCX filter reversed produces the best result). it's great across the frame at any distance by f/5.6.




Oct 01, 2017 at 04:58 PM
wayne seltzer
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p.2 #14 · p.2 #14 · Is there any alt 28mm or 24mm lens that is sharp from corner to corner


What about Minolta MC/MD 28/2?



Oct 01, 2017 at 05:04 PM
sebboh
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p.2 #15 · p.2 #15 · Is there any alt 28mm or 24mm lens that is sharp from corner to corner


wayne seltzer wrote:
What about Minolta MC/MD 28/2?


it's pretty solid stopped down to f/8, the late MD with 49mm filter threads is better at landscape in my experience than the MC/early MD. there is a bit of a midzone dip and it never gets the biting microcontrastiness of the contax g, c/y, or nikkor.

here's a comparison at infinity of the late MD, early MD, vivitar 28/2 close focus, and the contax g without a correction filter (focus balanced between the center and corners for the contax g).

edit: like the 28/2.8 AIS, i find both the MD 28/2s to be better at closer distances than at infinity.




Oct 01, 2017 at 05:15 PM
retrofocus
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p.2 #16 · p.2 #16 · Is there any alt 28mm or 24mm lens that is sharp from corner to corner


JohnJ wrote:
I've never found the 17-40L sharp in the corners even at its best aperture, even on a canon 5D2.


I disagree from a lot of experience with the 17-40/4 L both on my 5D MkII and on the A7R. Stopped down my lens copy is sharp in the corners that I never needed a replacement of this lens.



Oct 01, 2017 at 11:15 PM
philip_pj
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p.2 #17 · p.2 #17 · Is there any alt 28mm or 24mm lens that is sharp from corner to corner


A case of getting what you pay for. None of them hold a candle to the Batis 25mm, for all criteria apart from cost. The more I shoot the less concerned I am with far corners, the places people look when they have exhausted all other points of interest. 'Well, at least it has sharp corners' is not a comment to expect from most viewers, whose focus lies far afield.





Contax (CY) 28/2.8 @ f8




Oct 01, 2017 at 11:18 PM
arduluth
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p.2 #18 · p.2 #18 · Is there any alt 28mm or 24mm lens that is sharp from corner to corner



sebboh wrote:
the nikkor is a great lens, but better up close and at medium distance than at infinity. for reasonable priced slr 28mm lenses i'd pick the nikkor 28/2.8 AIS or the c/y 28/2.8 copy variation will probably be as big as performance differences between the two (the nikkor is better for flowers though imho). the pentax K 28/3.5 also looks very competitive in the comparisons i've seen, but i've never shot it. the OM lenses tend to be more even across the frame (less sudden drop off at the corners, but have less biting sharpness midframe and tend to have
...Show more

You're killing me with the difference at f/5.6... I've avoided playing the reversed PCX game since it's unnecessary on the G 45 and CV 35/1.7... Your crops make it look even better than what I initially saw in the thread...

Anyone selling these ready to use yet? Any issues reaching infinity on a standard adapter? Feel free to ignore, probably already discussed... But wow.

Regarding the OP's question - more votes for the OM 24/2.8 and OM 28/3.5. They meet the OP's criteria of being sharp into the corners. Neither are nearly as sharp as the FE 28/2 in the center or midzone at f/4.



Oct 02, 2017 at 12:30 AM
timballic
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p.2 #19 · p.2 #19 · Is there any alt 28mm or 24mm lens that is sharp from corner to corner


Another vote for OM 24/2.8 though there is some moustache distortion. (MC or later, plain "Zuiko", not the early H. Zuiko, SC version), and OM 28/3.5 (only made in SC), also the Pentax K 28/3.5 which is SMC multi coated and more flare resistant than the OM equivalent.
I also wouldn't consider the EF 17-40, too much corner "smearing" on the copies I've tried, especially on the A7 series.



Oct 02, 2017 at 10:14 AM
alundeb
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p.2 #20 · p.2 #20 · Is there any alt 28mm or 24mm lens that is sharp from corner to corner


retrofocus wrote:
I disagree from a lot of experience with the 17-40/4 L both on my 5D MkII and on the A7R. Stopped down my lens copy is sharp in the corners that I never needed a replacement of this lens.


I agree with you when it comes to the 24-28 mm range. The 17-40L is sharp corner-corner on the 5DS R at 24-28 mm, and with quite low CA, lower than many of the primes mentioned here. I found the 16-35 F4 IS better at the widest end though. Both these lenses are very good in the middle range and that is not where I am looking at primes for better performance stopped down.




Oct 02, 2017 at 10:30 AM
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