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01-07-2019, 08:49 AM - 4 Likes   #646
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Comparison between HD Pentax-D FA★ 50mm f/1.4 SDM AW, smc Pentax-FA 50mm f/1.4, smc Pentax-M 50mm f/1.4, SMC Takumar 50mm f/1.4, Super-Takumar 50mm f/1.4 (7 elements in 6 groups) and early Super-Takumar 50mm f/1.4 (8 elements in 6 groups) on Pentax K-1 II, including many pictures:

特別企画:D FA★50mm F1.4発売記念「ペンタックス歴代50mm F1.4レンズ撮り比べ」 - デジカメ Watch (in Japanese)

Special project - D FA ★ 50 mm F1.4 release commemoration - Comparison of successive PENTAX 50mm F1.4 lenses - Digital Camera Watch (Google translation)




Last edited by Mistral75; 01-07-2019 at 08:57 AM.
01-07-2019, 09:20 AM   #647
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It is big!!!
01-07-2019, 09:22 AM - 1 Like   #648
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Let's say there is more to it than that.
01-07-2019, 10:36 AM   #649
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I have two of those

It is not the biggest 50 1.4 That goes to the zeiss milvus:



But although being about the same size as the Sigma 50mm 1.4 Art it has twice the weight. (If camerasize.com's numbers are correct). It probably has as much glass in it as the milvus has.


Last edited by D1N0; 01-07-2019 at 10:43 AM.
01-07-2019, 12:03 PM   #650
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QuoteOriginally posted by D1N0 Quote
I have two of those

It is not the biggest 50 1.4 That goes to the zeiss milvus:



But although being about the same size as the Sigma 50mm 1.4 Art it has twice the weight. (If camerasize.com's numbers are correct). It probably has as much glass in it as the milvus has.
I think the Sigma 50 f1.4 is 810 grams and the Pentax DFA *50 is 910 grams, so 100 grams difference...

(B and H numbers).
01-07-2019, 12:47 PM   #651
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95g to be precise
The Sigma is 815g.
01-07-2019, 01:12 PM   #652
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camerasize.com had it at 470 grams

01-07-2019, 02:05 PM   #653
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Sigma has it at 815.
https://www.sigmaphoto.com/50mm-f14-dg-hsm-a
01-07-2019, 02:14 PM   #654
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QuoteOriginally posted by Pål Jensen Quote
It is big!!!
The new standard is corner-to-corner perfection.
Lenses like the Zeiss standard and the "Zeiss killer" eight-element 50mm f/1.4 Takumar concentrated on the center of the image.
01-07-2019, 02:24 PM   #655
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QuoteOriginally posted by D1N0 Quote
It is not the biggest 50 1.4 That goes to the zeiss milvus
Leica SL. 82mm filter thread, 88 x 124mm, 1065g.
The Otus 55mm is impressive as well.
01-07-2019, 02:48 PM   #656
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Somehow I managed to get the 85mm milvus on there. The 50 is very similar and lighter than the Pentax. Otus would be bigger but it is 55. Leica I ignore.
01-08-2019, 06:49 AM   #657
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QuoteOriginally posted by reh321 Quote
The new standard is corner-to-corner perfection.
Lenses like the Zeiss standard and the "Zeiss killer" eight-element 50mm f/1.4 Takumar concentrated on the center of the image.
Film can take light that comes at an angle, digital sensors cannot (also explaining the curved sensor discussion). Some of it is corrected with the edge-micro-lenses in front of the sensor.

In other words, your Takumars edge performance on film is much better than on digital.
01-08-2019, 07:00 AM   #658
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QuoteOriginally posted by UlrichSchiegg Quote
Film can take light that comes at an angle, digital sensors cannot (also explaining the curved sensor discussion). Some of it is corrected with the edge-micro-lenses in front of the sensor.

In other words, your Takumars edge performance on film is much better than on digital.
Equally importantly, back then people did not focus on edge-to-edge sharpness.
01-08-2019, 07:06 AM   #659
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QuoteOriginally posted by UlrichSchiegg Quote
Film can take light that comes at an angle, digital sensors cannot
Some wide angle lenses that have short flange focal distances aka rangefinder lenses suffer from heavy vignetting on mirrorless full frame sensors because of the extreme angle at which the light hits the sensor.

QuoteOriginally posted by UlrichSchiegg Quote
also explaining the curved sensor discussion
That is about field curvature, making it easier to design lenses. Not light fall off. Although that would also help.

QuoteOriginally posted by UlrichSchiegg Quote
your Takumars edge performance on film is much better than on digital.
Not so, but on digital flaws are more obvious because we can pixel peep.
01-08-2019, 10:28 AM - 6 Likes   #660
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QuoteOriginally posted by reh321 Quote
The new standard is corner-to-corner perfection.
Because, as we all know, if that twig 10-pixels from the edge of the frame that has nothing to do with your subject or composition but happens to fall within your F/1.4 plane of focus is anything but pixel sharp, your shot is ruined. RUINED I TELL YOU!!!


(Sorry, couldn't resist. <sigh>)
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