Working on new Ultimate Asahi Pentax Guide

rhodopsin · 06-29-2020, 02:21 PM

Originally posted by Argos

Just to lift a tip of veil: the good things of the first edition remain, several new photos have been added, the text is now aimed at collectors and users, especially of Takumar lenses, more historical facts have been added, more on repair, most of all an estimate of numbers produced and serial number range of lenses, prototype cameras and of course correction of mistakes and typos.

Thanks for the peek!

A project maybe of interest 29 Versions of the 55mm Asahi Takumar M42 Screw Mount Lenses

rhodopsin · 09-19-2020, 08:15 AM

Is the Tomioka made Yashinon 5cm f/2 the same as Auto-Takumar 1:1.8 / 55 as claimed by

? YASHICA?AUTO YASHINON 5cm/f2?M42?vs Asahi Opt. Co.,?Auto – Takumar 55mm/f1.8 zebra?M42?

**Argos** · 09-20-2020, 02:24 AM

Originally posted by rhodopsin

Thanks for the peek!

A project maybe of interest 29 Versions of the 55mm Asahi Takumar M42 Screw Mount Lenses

interesting!

---------- Post added 09-20-20 at 02:26 AM ----------

Originally posted by rhodopsin

Is the Tomioka made Yashinon 5cm f/2 the same as Auto-Takumar 1:1.8 / 55 as claimed by

? YASHICA?AUTO YASHINON 5cm/f2?M42?vs Asahi Opt. Co.,?Auto – Takumar 55mm/f1.8 zebra?M42?

There are lots of similarities, but also differences. Both lenses are a sort of mirror image of each other. I don't know what to think about the OEM suggestion. I would like to see the glass parts and their curvatures and composition as well to determine whether one is 5 cm and the other 55 mm focal distance.

rhodopsin · 09-20-2020, 01:25 PM

Me too.

I'd compare the M42 Yashinon 1:2/55 with Auto-Takumar 1:2/55, however.

There is ongoing debate here Takumar Field Guide

I agree with comment there "The Auto-Yashinon lenses were manufactured by Asahi Optical Company factory makes more sense?"

Also, the site Takumar Field Guide - Blog is best I've seen so far.

**Argos** · 09-21-2020, 07:21 AM

The discussion contains several misconceptions, such as the suggestion about the lens mount being different. Yashica at that time had the simple M42 mount cameras and lenses, not the later bayonet mount. They also don't take the difference in focal length and the glass element curves not into account. I will contact the Takumar Field Guide people to ask them what they think of it. Me, I am not (yet) convinced about Asahi Optical being the manufacturer of both lenses, nor outsourcing production to Tomioka.

robiles · 10-30-2020, 04:33 PM

Really intefested in your book. Would apreciate it if you could keep us up to gate with your progress. Good luck.

**Argos** · 10-31-2020, 02:22 AM

I will keep you posted...

**victor9000** · 10-31-2020, 04:42 AM

I'm also very interested in Your book.
In my 'manual bag' are a lot of old M42 Taks and diverse other manual lenses from the 60s/70s.
Will the book be available online? I'm from germany and doubt that it'll be available at bookstores.

Walter

**Argos** · 11-01-2020, 05:11 AM

Once the book is available, you can order it strait from me. It will not be available in bookstores. Online there is too much risk of illegal copying.

Breakfastographer · 11-03-2020, 06:09 AM

Thanks for letting us know about this project. I could see myself being interested, having bought similar works before.

WhatsMyNameAD67 · 11-03-2020, 07:36 AM

Welcome Gerjan. I'm looking forward to the read!

FotoPete · 11-03-2020, 09:58 PM

Looking forward to this! Would be great to get to bottom of the many takumar stories floating around.

**Argos** · 11-05-2020, 06:12 AM

I have tried to present data as they are and not to speculate.

**bobphoenix** · 11-05-2020, 07:04 AM

Nice concept...
There are a lot of years to cover...

titrisol · 06-03-2021, 06:47 AM

Gerjan
Ray Allen said your book is ready and I saw that you are advertising in Marktplaats and 2dehands already, how can we order the book?

Originally posted by Argos

Once the book is available, you can order it strait from me. It will not be available in bookstores. Online there is too much risk of illegal copying.

09-20-2020, 02:24 AM	#18
Argos Site Supporter Join Date: Apr 2010 Location: Utrecht Photos: Gallery \| Albums Posts: 131 Original Poster	Originally posted by rhodopsin Thanks for the peek! A project maybe of interest 29 Versions of the 55mm Asahi Takumar M42 Screw Mount Lenses interesting! ---------- Post added 09-20-20 at 02:26 AM ---------- Originally posted by rhodopsin Is the Tomioka made Yashinon 5cm f/2 the same as Auto-Takumar 1:1.8 / 55 as claimed by ? YASHICA?AUTO YASHINON 5cm/f2?M42?vs Asahi Opt. Co.,?Auto – Takumar 55mm/f1.8 zebra?M42? There are lots of similarities, but also differences. Both lenses are a sort of mirror image of each other. I don't know what to think about the OEM suggestion. I would like to see the glass parts and their curvatures and composition as well to determine whether one is 5 cm and the other 55 mm focal distance. Last edited by Argos; 09-20-2020 at 02:28 AM. Reason: additional comment

06-03-2021, 06:47 AM	#30
titrisol Pentaxian Join Date: Dec 2007 Location: In the most populated state... state of denial Photos: Gallery \| Albums Posts: 1,852	Gerjan Ray Allen said your book is ready and I saw that you are advertising in Marktplaats and 2dehands already, how can we order the book? Originally posted by Argos Once the book is available, you can order it strait from me. It will not be available in bookstores. Online there is too much risk of illegal copying. Last edited by titrisol; 06-04-2021 at 03:27 AM.

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06-29-2020, 02:21 PM	#16
rhodopsin Veteran Member Join Date: Dec 2009 Location: Deep Forest Posts: 643	Originally posted by Argos Just to lift a tip of veil: the good things of the first edition remain, several new photos have been added, the text is now aimed at collectors and users, especially of Takumar lenses, more historical facts have been added, more on repair, most of all an estimate of numbers produced and serial number range of lenses, prototype cameras and of course correction of mistakes and typos. Thanks for the peek! A project maybe of interest 29 Versions of the 55mm Asahi Takumar M42 Screw Mount Lenses

09-19-2020, 08:15 AM	#17
rhodopsin Veteran Member Join Date: Dec 2009 Location: Deep Forest Posts: 643	Is the Tomioka made Yashinon 5cm f/2 the same as Auto-Takumar 1:1.8 / 55 as claimed by ? YASHICA?AUTO YASHINON 5cm/f2?M42?vs Asahi Opt. Co.,?Auto – Takumar 55mm/f1.8 zebra?M42?

09-20-2020, 01:25 PM	#19
rhodopsin Veteran Member Join Date: Dec 2009 Location: Deep Forest Posts: 643	Me too. I'd compare the M42 Yashinon 1:2/55 with Auto-Takumar 1:2/55, however. There is ongoing debate here Takumar Field Guide I agree with comment there "The Auto-Yashinon lenses were manufactured by Asahi Optical Company factory makes more sense?" Also, the site Takumar Field Guide - Blog is best I've seen so far.

09-21-2020, 07:21 AM	#20
Argos Site Supporter Join Date: Apr 2010 Location: Utrecht Photos: Gallery \| Albums Posts: 131 Original Poster	The discussion contains several misconceptions, such as the suggestion about the lens mount being different. Yashica at that time had the simple M42 mount cameras and lenses, not the later bayonet mount. They also don't take the difference in focal length and the glass element curves not into account. I will contact the Takumar Field Guide people to ask them what they think of it. Me, I am not (yet) convinced about Asahi Optical being the manufacturer of both lenses, nor outsourcing production to Tomioka.

10-30-2020, 04:33 PM	#21
robiles Veteran Member Join Date: Jan 2014 Location: Deva Posts: 311	Really intefested in your book. Would apreciate it if you could keep us up to gate with your progress. Good luck.

10-31-2020, 02:22 AM	#22
Argos Site Supporter Join Date: Apr 2010 Location: Utrecht Photos: Gallery \| Albums Posts: 131 Original Poster	I will keep you posted...

10-31-2020, 04:42 AM	#23
victor9000 Site Supporter Join Date: Oct 2014 Location: Saarland Posts: 5	I'm also very interested in Your book. In my 'manual bag' are a lot of old M42 Taks and diverse other manual lenses from the 60s/70s. Will the book be available online? I'm from germany and doubt that it'll be available at bookstores. Walter

11-01-2020, 05:11 AM	#24
Argos Site Supporter Join Date: Apr 2010 Location: Utrecht Photos: Gallery \| Albums Posts: 131 Original Poster	Once the book is available, you can order it strait from me. It will not be available in bookstores. Online there is too much risk of illegal copying.

11-03-2020, 06:09 AM	#25
Breakfastographer Pentaxian Join Date: Nov 2018 Posts: 673	Thanks for letting us know about this project. I could see myself being interested, having bought similar works before.

11-03-2020, 07:36 AM	#26
WhatsMyNameAD67 Veteran Member Join Date: Sep 2018 Posts: 307	Welcome Gerjan. I'm looking forward to the read!

11-03-2020, 09:58 PM	#27
FotoPete Veteran Member Join Date: Feb 2007 Location: Toronto Photos: Gallery Posts: 1,774	Looking forward to this! Would be great to get to bottom of the many takumar stories floating around.

11-05-2020, 06:12 AM	#28
Argos Site Supporter Join Date: Apr 2010 Location: Utrecht Photos: Gallery \| Albums Posts: 131 Original Poster	I have tried to present data as they are and not to speculate.

11-05-2020, 07:04 AM	#29
bobphoenix Site Supporter Join Date: Apr 2013 Location: Norwich, Connecticut Photos: Gallery \| Albums Posts: 439	Nice concept... There are a lot of years to cover...