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F1.2 Normal lens comparison
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PostPosted: Tue Apr 19, 2011 4:55 pm    Post subject: F1.2 Normal lens comparison Reply with quote

Some german photo magazine article, but hard to read the left side
descriptions which indicate the lens specific performance. Could some one
lighten up for me and to whom may concern. Very Happy

When you click on the image, it gets a bit larger.


Thank you.


PostPosted: Tue Apr 19, 2011 6:10 pm    Post subject: Reply with quote

Hi Koji, it might be usefull for you as following translation.
Gesamtwertung= total results
Unter 50 Punkte : ausgezeichnet = very good
50 Punkte bis 60 Punkte = good
60 Punkte bis 70 Punkte = satisfied
70 Punkte bis 75 Punkte = less satisfied
75 Punkte bis 80 Punkte = more less satisfied
More than 80 Punkte = no satisfied


Bildmitte = center
Bildrand = corner

I hope, it helps a little
Regards


PostPosted: Tue Apr 19, 2011 6:36 pm    Post subject: Reply with quote

So the following was a concise text of the above table....


f/1.2 lenses

Lenses tested ----------------------f/1.2 -----f/2.8 -----f/5.6 -----Average

Pentax SMC 50mm f/1.2 ---------101 -------77 ---------50 --------228
Nikon Nikkor 50mm f/1.2 --------116 -------73 ---------49 --------238
Canon FD 55mm f/1.2 -----------117 -------82 ---------45 --------244
Minolta MD Rokkor 50mm f/1.2 -117 -------75 ---------54 --------246
Canon FD 55mm AL f/1.2 --------117 -------84 ---------51 --------252
Yashica ML 55mm f/1.2 ----------124 -------90 ---------51 --------265
Olympus Zuiko 55mm f/1.2 -----125 -------90 ---------60 --------275
Nicon Noct-Nikkor 58mm f/1.2 ---158 ------107 ---------52 --------317
Leitz Noctilux 50mm f/1.0 --------152 -------97 ---------67 --------316
Konica Hexar 57mm f/1.2 --------166 ------129 ---------58 --------353


Smaller number is sharper (I do not know why?)

Thank you...


PostPosted: Tue Apr 19, 2011 6:41 pm    Post subject: Reply with quote

I did try Pentax, Nikon and Konica I remember for wide open sharpness. My order equal than here. Pentax,Nikon and Konica. Nikon and Konica have better bokeh than Pentax, Pentax is sharpest wide open.


PostPosted: Wed Apr 20, 2011 5:52 am    Post subject: Reply with quote

I've read the chart on Flickr before.
The chart picture was in small resolution that I could not read wheter its K or A version, so I assume its the Pentax-A version.
I search on eBay, local market & Pentax Forum for the Pentax-A SMC but its very expensive and rare. Finally I got the a lot cheaper K version, and it's sharp enough.
And I am glad to read the bigger resolution chart posted by Koji above. Its Pentax K Smile

But I still wonder if there is any significant different between A & K version.

By the way I love all my standard f/1.2 lens for their different character and advantages (some dont hit 5D mirror Smile ), that I still could not decide which lens I should keep and let go. Smile


PostPosted: Wed Apr 20, 2011 10:52 am    Post subject: Reply with quote

This test suggests that the image quality of the Pentax in the image centre decreases from f/1.2 to f/2.0. That makes me highly suspicious of the quality of the whole test.


PostPosted: Wed Apr 20, 2011 3:34 pm    Post subject: Reply with quote

Thanks for the info.

I am curious about the result for Noct-Nikkor...

I have used the Nikon 50/1.2 and it is very good indeed. Would like to try the Pentax some day too.


PostPosted: Wed Apr 20, 2011 10:18 pm    Post subject: Reply with quote

dickb wrote:
This test suggests that the image quality of the Pentax in the image centre decreases from f/1.2 to f/2.0. That makes me highly suspicious of the quality of the whole test.


So how do you conclude from this MTF tables for Contax-G Planar 35/2, supplied by Zeiss.



The centre sharpness of this lens is apparently decreasing if you read
the table normally. There might be a special reason for "dip" in F5.6
MTF table.


PostPosted: Thu Apr 21, 2011 8:47 am    Post subject: Reply with quote

koji wrote:

So how do you conclude from this MTF tables for Contax-G Planar 35/2, supplied by Zeiss.


I conclude that I don't know enough about lens design and MTF tables. My suspicions may be too hasty.

I may have the original test somewhere in my library of old photomagazines. I'll try and find it to see what they write about the individual lenses.


PostPosted: Thu Apr 21, 2011 9:22 am    Post subject: Reply with quote

Here's a better version of the chart in the first post:

Source: http://www.kameradoktor.de



PostPosted: Thu Apr 21, 2011 10:01 am    Post subject: Reply with quote

Wow, thanks a lot for the better look chart.

Can anybody help to translate the other parameter on the left column please? (other than our friend convert1 has mentioned above)


PostPosted: Thu Apr 21, 2011 10:43 am    Post subject: Reply with quote

Sharpness wide open center
border

f2 - f2.8 center
border

f4 - f8 center
border

bloom at high contrast ( at night exposures )
coma
reflections at night and against light
distortion
vignetting
color neutrality
close focusing ( max. reproduction scale )
handling
compactness and weight

total score quantified according to circumstances / situations:
situation A = general photography, balanced
situation B = holiday, people, landscape ( generally from f4 )
situation C = reportage, snapshots, action, occasional wide open shot
situation D = reportage, theater, night shots, often wide open

the first 4 columns of numbers are 'multipliers' by which the individual scores of a lens are multiplied to weigh them according to the 4 described circumstances, first column weighing for situation A, second for B asf. to come up with total scores of a lens for the 4 describes circumstances / situations given in the last 4 rows of numbers ( if I understand correctly..? )

hope this helps, and that someone will correct or explain further if so needed


Last edited by kuuan on Sat Apr 23, 2011 3:52 am; edited 1 time in total


PostPosted: Thu Apr 21, 2011 3:03 pm    Post subject: Reply with quote

Well i think that i'll keep my 50 Nikkor then . It is very good without the test chart by the way Wink


PostPosted: Thu Apr 21, 2011 5:03 pm    Post subject: Reply with quote

so the Canon FD 55 f1.2 is the third best among them? Smile

that's good news then!

very useful info

but where's the Contax Planar 1.2/55 ? hey?

tf


PostPosted: Thu Apr 21, 2011 5:17 pm    Post subject: Reply with quote

in his conclusion the tester actually rates the Canons to be best of the bunch specially due to their low bloom and coma values.

Koji's calculation of sharpness numbers puts the Pentax ahead, the numbers seem to indicate that it shines above all with wide open center sharpness


PostPosted: Thu Apr 21, 2011 5:38 pm    Post subject: Reply with quote

koji wrote:

Smaller number is sharper (I do not know why?)

Thank you...


Koji the tester explains his numbering as follows:
0-15 points: premium performance, very good even in critical situations
16-30: very good, generally meets highest demands
31-55: good, but limitations at special applications
56-80: satisfactory, generally negligible shortcomings
81-110: less satisfactory, already clear shortcomings
111-150: not satisfactory, strong limitations
151-200: inadequate even for low demands

total score:
below 5000: very good
5000-6000: good
.....


PostPosted: Thu Apr 21, 2011 7:35 pm    Post subject: Reply with quote

Thank you all those translations, Kuuan.


PostPosted: Fri Apr 22, 2011 3:00 am    Post subject: Reply with quote

+1 to kuuan for the translation. Thanks a lot.

Previously I ignore my FD 55/1.2 because it hits my 5D mirror so I dont use it much. Now it will change Smile
Hope could find time soon to test the FD, Nikkor & Pentax and share the result.

By the way I found this too :
http://www.fredmiranda.com/forum/topic/763806/0


PostPosted: Fri Apr 22, 2011 11:58 am    Post subject: Reply with quote

trifox wrote:
so the Canon FD 55 f1.2 is the third best among them? Smile

that's good news then!


No, I think you will find that the total figures at the bottom of the chart (in four digits) clearly show the Canon FD 55mm f1.2 SSC is the best lens of the bunch, then its the Canon AL version, then the Minolta Rokkor 50mm f1.2, then the Noct-Nikkor 58mm f1.2 and then the Pentax 55mm f1.2, with the others trailing behind.
The worst of the bunch is the Konica Hexanon 57mm f1.2.
I'm supprised at how poor the Leica Noctilux performed, at second worst, given the huge premiums they ask for their lenses!

> very useful info

Not really...I dont know how the results were obtained so I dont know how accurate they are in reality. Were all variables eliminated? There is no way of knowing.

> but where's the Contax Planar 1.2/55 ? hey?

Thats the problem with lens comparsison tests...They simply cant test every single 50-58mn fast lens ever made because most testers are'nt well off enough to afford a copy of every such lens and there is always a good chance that a lens you have, or that you would like to see, wont be represented in the test.
For example, I'd like to see the Minolta Rokkor 58mm f1.2 included and the older Canon FL 55mm f1.2 as well...That would shake things up a bit.
Still test data is test data and its always welcome. Wink


PostPosted: Fri Apr 22, 2011 12:32 pm    Post subject: Reply with quote

DSG wrote:
.
Still test data is test data and its always welcome. Wink


And it could bite and poison a manual lens newbie addict (like me) to grab all the lens so I could test and prove it myself .... Very Happy

Well, Noct Nikkor is impossible to get, though Smile


PostPosted: Fri Apr 22, 2011 2:53 pm    Post subject: Reply with quote

I just found Zeiss 55/1.2 vs the other lens sharpness comparison chart in here:

http://www.imx.nl/photo/technique/technique/hslenses.html

By the way how many version of Canon FD f/1.2 standard lens?
From www.mir.com I found at least 5 version :
- Canon Lens FD 55mm f/1.2 S.S.C.
- Canon Lens FD 55mm f/1.2 S.S.C. Aspherical
- Canon FD 55mm f/1.2 AL
- Canon FD 50mm f/1.2
- Canon FD 50mm f/1.2 L
Or maybe I should post as a new topic? Smile


PostPosted: Fri Apr 22, 2011 6:01 pm    Post subject: Reply with quote

DSG wrote:
trifox wrote:
so the Canon FD 55 f1.2 is the third best among them? Smile

that's good news then!


No, I think you will find that the total figures at the bottom of the chart (in four digits) clearly show the Canon FD 55mm f1.2 SSC is the best lens of the bunch, then its the Canon AL version, then the Minolta Rokkor 50mm f1.2, then the Noct-Nikkor 58mm f1.2 and then the Pentax 55mm f1.2, with the others trailing behind.
The worst of the bunch is the Konica Hexanon 57mm f1.2.
I'm supprised at how poor the Leica Noctilux performed, at second worst, given the huge premiums they ask for their lenses!

> very useful info

Not really...I dont know how the results were obtained so I dont know how accurate they are in reality. Were all variables eliminated? There is no way of knowing.

> but where's the Contax Planar 1.2/55 ? hey?

Thats the problem with lens comparsison tests...They simply cant test every single 50-58mn fast lens ever made because most testers are'nt well off enough to afford a copy of every such lens and there is always a good chance that a lens you have, or that you would like to see, wont be represented in the test.
For example, I'd like to see the Minolta Rokkor 58mm f1.2 included and the older Canon FL 55mm f1.2 as well...That would shake things up a bit.
Still test data is test data and its always welcome. Wink

+1


PostPosted: Fri Apr 22, 2011 6:03 pm    Post subject: Reply with quote

cf below

Last edited by Phenix jc on Mon Apr 25, 2011 4:55 pm; edited 1 time in total


PostPosted: Fri Apr 22, 2011 6:04 pm    Post subject: Reply with quote

Quote:
By the way how many version of Canon FD f/1.2 standard lens?
From www.mir.com I found at least 5 version :
- Canon Lens FD 55mm f/1.2 S.S.C.
- Canon Lens FD 55mm f/1.2 S.S.C. Aspherical
- Canon FD 55mm f/1.2 AL
- Canon FD 50mm f/1.2
- Canon FD 50mm f/1.2 L
Or maybe I should post as a new topic? Smile

FL 58/1.2 & FL 55/1.2


PostPosted: Fri Apr 22, 2011 7:37 pm    Post subject: Reply with quote

The fact that the Noct-Nikkor is "good" wide open does not make it the choice for an f/2 or f/2.8 shooter, as indicated both in the data originally posted here as well as in the following detail comparison of Nikkors vs. the Noctilux from f/1.2 to slower f-stop:

http://photo.net/nikon-camera-forum/00Ew8i

There is in my opinion no surprise in the fact that the premium price of the Noctilux is due to faster aperture, not more detail wide open.