Is there a DA* 30mm/1.0 in the works?

ajuett · 05-15-2009, 06:46 PM

Originally posted by Art Vandelay II

ha, hell if I know. I do a pretty good job of keeping up around here, but you'd have to work full time to follow all of the K7 threads.

It's daunting. We all need some form of medal or reward ...maybe a free K-7, how about it Pentax?

falconeye · 05-15-2009, 06:47 PM

Originally posted by ajuett

From the image that bar indicates 1/3 steps from +2 to -2

So then, it is -3 to +3 with 1/2 stop steps.

Art Vandelay II · 05-15-2009, 07:24 PM

Originally posted by ajuett

It's daunting. We all need some form of medal or reward ...maybe a free K-7, how about it Pentax?

That's the best idea I've heard yet.

jogiba · 05-15-2009, 08:23 PM

Lumix G1 with Canon 50mm F0.95 lens

RaduA · 05-15-2009, 11:42 PM

My first impulse was to mount the 35Ltd on the K20D and make an exact replica of the pic that started all then post it as a proof that I was right above. But you seem to like to ignore logical thinking so I guess why bother?

Like I said the pic was doctored in Photoshop by removing parts of whatever number it were there originally and I think the guy who post it was thinking that doing so he will cast a shadow about the shutter speed too because the leak was about that part not some mythicall uberlens (btw, why 30mm and not 50mm or any other value?

) by Pentax.
In hindsight he could of been too smart for you, Pal!

Enjoy your masochistic thread!
Radu

ajuett · 05-15-2009, 11:52 PM

Originally posted by jogiba

Lumix G1 with Canon 50mm F0.95 lens

I had a G1 with a FD 50mm f/1.2 and it was Very unbalanced. i can only imagine how front heavy that 0.95 is!
The 1.2 took decent photos though...

jay · 05-16-2009, 12:00 AM

a 30mm f/1.0 lens (or any f/1.0 lens, for that matter) is impossible. The K-mount doesn't support anything faster than f/1.2.

Recall the K-A mount uses 5 metal contacts that are either shorted or open to tell the camera what the maximum open aperture is, and the minimum aperture.

The two "fastest" patterns are 10001 for a f/1.2 - f/16 lens, and 11111 for an f/1.2 - f/22 lens.

So, Pentax would have to, at the minimum, add an extra pin to the mount somewhere. This seems rather unlikely.

EDIT: Actually, I realized 11001 and 11000 both cause the camera to report f--, so they're unused. If they did introduce a 30mm f/1.0 lens, they would be able to use one of the unused combinations -- but the lens wouldn't be backward-compatible with existing camera bodies.

janneman · 05-16-2009, 12:45 AM

Originally posted by Art Vandelay II

Also, hopefully it won't be ridiculously priced like the DA Star 55mm. I know it's a wonderful lens, but $700? Ouch. Nikons equally good new 50mm 1.4G is currently only $485; and was selling for $440 when first released.

Most Pentax lenses cost MORE on release and will drop in price....

Originally posted by jay

EDIT: Actually, I realized 11001 and 11000 both cause the camera to report f--, so they're unused. If they did introduce a 30mm f/1.0 lens, they would be able to use one of the unused combinations -- but the lens wouldn't be backward-compatible with existing camera bodies.

Neither are the DA lenses,.. Pentax bodies have been backwards compatible, NOT the lenses...

Hmm in the past posts we have heard thing like "some will be dissapointed in body", "change in philosophy"... Hints at abandoning backwards compatability?

ibk · 05-16-2009, 02:11 AM

Originally posted by janneman

Hmm in the past posts we have heard thing like "some will be dissapointed in body", "change in philosophy"... Hints at abandoning backwards compatability?

In a word - No!

Steelski · 05-16-2009, 02:23 AM

Originally posted by jay

a 30mm f/1.0 lens (or any f/1.0 lens, for that matter) is impossible. The K-mount doesn't support anything faster than f/1.2.

Recall the K-A mount uses 5 metal contacts that are either shorted or open to tell the camera what the maximum open aperture is, and the minimum aperture.

The two "fastest" patterns are 10001 for a f/1.2 - f/16 lens, and 11111 for an f/1.2 - f/22 lens.

So, Pentax would have to, at the minimum, add an extra pin to the mount somewhere. This seems rather unlikely.

EDIT: Actually, I realized 11001 and 11000 both cause the camera to report f--, so they're unused. If they did introduce a 30mm f/1.0 lens, they would be able to use one of the unused combinations -- but the lens wouldn't be backward-compatible with existing camera bodies.

A quick firmware update should do the trick.

mer · 05-16-2009, 03:23 AM

personally I love fast lenses.

Most of the time I use my 55/1.2 . On film it looks out of this world. I love when a lens has it's own character , be it abberations or bokeh quality . When FF lenses are used with aps-c sensors most of the time I don't like the results . For example the 31/1.8 LTD or my 55/1.2 is crap on the aps-c. Not exactly crap but this is not the result I expect from these lenses .

To compensate for the DOF we need a 30mm f/1.0 if we want the 50mm F/1.4 equivalent on FF. The 30mm F/1.0 is not THAT difficult to design for aps-c and I am 99% it can be done for Pentax DSLRS and it wouldn't cost more than 800usd. If they could sell 50mm f/1.2 lenses for 200-300usd back in the 70's for FF ( with all metal construction and good build quality ) then I am sure they can design an aps-c 30mm f/1.0 lens for quite cheap.

Sometimes many people buy an slr only because sometime they will be able to buy a very good lens . For example some people buy pentax so they can use a limited lens on it but not many will finally buy it so sometimes it's all about the cult status.

Bophoto · 05-16-2009, 04:37 AM

FA31/1,8 are a wide lens for 24X36, now it´s a "47,5mm" lens on APS.
And the rumours before was a DA* 30/1,4, but that´s to close to FA31 ltd.
OK, 50/1,4, 1,7, 2 and 1,2 are Pentax tradition, so we can expect a 30mm with f1,2,
1,0 are to expensive to sale enough and 1,4 are to close to FA31.
At the time then K50/1,2 was on sale, Pentax was big and also had 50mm with 2,0, 1,7, 1,4 and a Macro f4(but not so many zooms).

But to be a little different from FA31 ltd and also a tradition from M40/2,8 and FA43/1,9, Pentax can make a DA28/1,2(that is "43mm"), if not Pentax have plans for a 28mm limited.

**Pål Jensen** · 05-16-2009, 06:16 AM

Originally posted by RaduA

like to ignore logical thinking so I guess why bother?

Like I said the pic was doctored in Photoshop by removing parts of whatever number it were there originally and I think the guy who post it was thinking that doing so he will cast a shadow about the shutter speed too because the leak was about that part not some mythicall uberlens Radu

Theres nothing logical in doctoring the aperture display if it was for showing the max shutterspeed. Thats achieved by simply dialing in max shutterspeed.

**Pål Jensen** · 05-16-2009, 06:18 AM

Originally posted by jay

a 30mm f/1.0 lens (or any f/1.0 lens, for that matter) is impossible. The K-mount doesn't support anything faster than f/1.2..

Perhaps. But why then does the camera show F:1.0?

**Pål Jensen** · 05-16-2009, 06:22 AM

Originally posted by Bophoto

FA31/1,8 are a wide lens for 24X36, now it´s a "47,5mm" lens on APS.
And the rumours before was a DA* 30/1,4, but that´s to close to FA31 ltd.
OK, 50/1,4, 1,7, 2 and 1,2 are Pentax tradition, so we can expect a 30mm with f1,2,
1,0 are to expensive to sale enough and 1,4 are to close to FA31.
At the time then K50/1,2 was on sale, Pentax was big and also had 50mm with 2,0, 1,7, 1,4 and a Macro f4(but not so many zooms).

I agree with this but why then does the display show F:1.0? If photoshopped, why? If theres something that can be done with a prototype, why?
Anyway, a fast standard lens is missing form the Pentax lineup. My guess is that the coming 30mm is such a lens with speed of at least 1.4 to make much sense. The 31/1.8 doesn't really count; it is not a DA lens, it is not weather sealed, does not have SDM and generally doesn't fit in. I suspect it won't be in production for much longer.

05-16-2009, 04:37 AM	#72
Bophoto Veteran Member Join Date: Dec 2006 Location: Sweden Photos: Gallery Posts: 429	Da28/1,2 FA31/1,8 are a wide lens for 24X36, now it´s a "47,5mm" lens on APS. And the rumours before was a DA* 30/1,4, but that´s to close to FA31 ltd. OK, 50/1,4, 1,7, 2 and 1,2 are Pentax tradition, so we can expect a 30mm with f1,2, 1,0 are to expensive to sale enough and 1,4 are to close to FA31. At the time then K50/1,2 was on sale, Pentax was big and also had 50mm with 2,0, 1,7, 1,4 and a Macro f4(but not so many zooms). But to be a little different from FA31 ltd and also a tradition from M40/2,8 and FA43/1,9, Pentax can make a DA28/1,2(that is "43mm"), if not Pentax have plans for a 28mm limited.

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05-15-2009, 06:46 PM	#61
ajuett Inactive Account Join Date: Jul 2008 Location: Vancouver, Canada Posts: 1,100	Originally posted by Art Vandelay II ha, hell if I know. I do a pretty good job of keeping up around here, but you'd have to work full time to follow all of the K7 threads. It's daunting. We all need some form of medal or reward ...maybe a free K-7, how about it Pentax?

05-15-2009, 06:47 PM	#62
falconeye Veteran Member Join Date: Jan 2008 Location: Munich, Alps, Germany Photos: Gallery Posts: 6,871	Originally posted by ajuett From the image that bar indicates 1/3 steps from +2 to -2 So then, it is -3 to +3 with 1/2 stop steps.

05-15-2009, 07:24 PM	#63
Art Vandelay II Veteran Member Join Date: Jan 2008 Location: Charlotte, NC Photos: Gallery Posts: 886	Originally posted by ajuett It's daunting. We all need some form of medal or reward ...maybe a free K-7, how about it Pentax? That's the best idea I've heard yet.

05-15-2009, 08:23 PM	#64
jogiba Banned Join Date: Sep 2006 Location: Millstone,NJ Posts: 6,491	Lumix G1 with Canon 50mm F0.95 lens

05-15-2009, 11:42 PM	#65
RaduA Guest	My first impulse was to mount the 35Ltd on the K20D and make an exact replica of the pic that started all then post it as a proof that I was right above. But you seem to like to ignore logical thinking so I guess why bother? Like I said the pic was doctored in Photoshop by removing parts of whatever number it were there originally and I think the guy who post it was thinking that doing so he will cast a shadow about the shutter speed too because the leak was about that part not some mythicall uberlens (btw, why 30mm and not 50mm or any other value? ) by Pentax. In hindsight he could of been too smart for you, Pal! Enjoy your masochistic thread! Radu

05-15-2009, 11:52 PM	#66
ajuett Inactive Account Join Date: Jul 2008 Location: Vancouver, Canada Posts: 1,100	Originally posted by jogiba Lumix G1 with Canon 50mm F0.95 lens I had a G1 with a FD 50mm f/1.2 and it was Very unbalanced. i can only imagine how front heavy that 0.95 is! The 1.2 took decent photos though...

05-16-2009, 12:00 AM	#67
jay Inactive Account Join Date: Feb 2009 Location: Lincoln, Nebraska, USA Posts: 65	a 30mm f/1.0 lens (or any f/1.0 lens, for that matter) is impossible. The K-mount doesn't support anything faster than f/1.2. Recall the K-A mount uses 5 metal contacts that are either shorted or open to tell the camera what the maximum open aperture is, and the minimum aperture. The two "fastest" patterns are 10001 for a f/1.2 - f/16 lens, and 11111 for an f/1.2 - f/22 lens. So, Pentax would have to, at the minimum, add an extra pin to the mount somewhere. This seems rather unlikely. EDIT: Actually, I realized 11001 and 11000 both cause the camera to report f--, so they're unused. If they did introduce a 30mm f/1.0 lens, they would be able to use one of the unused combinations -- but the lens wouldn't be backward-compatible with existing camera bodies.

05-16-2009, 12:45 AM	#68
janneman Veteran Member Join Date: Sep 2006 Location: Netherlands Photos: Gallery Posts: 908	Originally posted by Art Vandelay II Also, hopefully it won't be ridiculously priced like the DA Star 55mm. I know it's a wonderful lens, but $700? Ouch. Nikons equally good new 50mm 1.4G is currently only $485; and was selling for $440 when first released. Most Pentax lenses cost MORE on release and will drop in price.... Originally posted by jay EDIT: Actually, I realized 11001 and 11000 both cause the camera to report f--, so they're unused. If they did introduce a 30mm f/1.0 lens, they would be able to use one of the unused combinations -- but the lens wouldn't be backward-compatible with existing camera bodies. Neither are the DA lenses,.. Pentax bodies have been backwards compatible, NOT the lenses... Hmm in the past posts we have heard thing like "some will be dissapointed in body", "change in philosophy"... Hints at abandoning backwards compatability?

05-16-2009, 02:11 AM	#69
ibk Forum Member Join Date: Sep 2006 Location: Sofia, Bulgaria Photos: Gallery Posts: 55	Originally posted by janneman Hmm in the past posts we have heard thing like "some will be dissapointed in body", "change in philosophy"... Hints at abandoning backwards compatability? In a word - No!

05-16-2009, 02:23 AM	#70
Steelski Veteran Member Join Date: Jan 2008 Location: Varna Posts: 470	Originally posted by jay a 30mm f/1.0 lens (or any f/1.0 lens, for that matter) is impossible. The K-mount doesn't support anything faster than f/1.2. Recall the K-A mount uses 5 metal contacts that are either shorted or open to tell the camera what the maximum open aperture is, and the minimum aperture. The two "fastest" patterns are 10001 for a f/1.2 - f/16 lens, and 11111 for an f/1.2 - f/22 lens. So, Pentax would have to, at the minimum, add an extra pin to the mount somewhere. This seems rather unlikely. EDIT: Actually, I realized 11001 and 11000 both cause the camera to report f--, so they're unused. If they did introduce a 30mm f/1.0 lens, they would be able to use one of the unused combinations -- but the lens wouldn't be backward-compatible with existing camera bodies. A quick firmware update should do the trick.

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05-16-2009, 03:23 AM	#71
mer Senior Member Join Date: Nov 2007 Location: Greece Posts: 237	personally I love fast lenses. Most of the time I use my 55/1.2 . On film it looks out of this world. I love when a lens has it's own character , be it abberations or bokeh quality . When FF lenses are used with aps-c sensors most of the time I don't like the results . For example the 31/1.8 LTD or my 55/1.2 is crap on the aps-c. Not exactly crap but this is not the result I expect from these lenses . To compensate for the DOF we need a 30mm f/1.0 if we want the 50mm F/1.4 equivalent on FF. The 30mm F/1.0 is not THAT difficult to design for aps-c and I am 99% it can be done for Pentax DSLRS and it wouldn't cost more than 800usd. If they could sell 50mm f/1.2 lenses for 200-300usd back in the 70's for FF ( with all metal construction and good build quality ) then I am sure they can design an aps-c 30mm f/1.0 lens for quite cheap. Sometimes many people buy an slr only because sometime they will be able to buy a very good lens . For example some people buy pentax so they can use a limited lens on it but not many will finally buy it so sometimes it's all about the cult status.

05-16-2009, 06:16 AM	#73
Pål Jensen Site Supporter Join Date: Dec 2007 Location: Norway Photos: Albums Posts: 4,371 Original Poster	Originally posted by RaduA like to ignore logical thinking so I guess why bother? Like I said the pic was doctored in Photoshop by removing parts of whatever number it were there originally and I think the guy who post it was thinking that doing so he will cast a shadow about the shutter speed too because the leak was about that part not some mythicall uberlens Radu Theres nothing logical in doctoring the aperture display if it was for showing the max shutterspeed. Thats achieved by simply dialing in max shutterspeed.

05-16-2009, 06:18 AM	#74
Pål Jensen Site Supporter Join Date: Dec 2007 Location: Norway Photos: Albums Posts: 4,371 Original Poster	Originally posted by jay a 30mm f/1.0 lens (or any f/1.0 lens, for that matter) is impossible. The K-mount doesn't support anything faster than f/1.2.. Perhaps. But why then does the camera show F:1.0?

05-16-2009, 06:22 AM	#75
Pål Jensen Site Supporter Join Date: Dec 2007 Location: Norway Photos: Albums Posts: 4,371 Original Poster	Originally posted by Bophoto FA31/1,8 are a wide lens for 24X36, now it´s a "47,5mm" lens on APS. And the rumours before was a DA* 30/1,4, but that´s to close to FA31 ltd. OK, 50/1,4, 1,7, 2 and 1,2 are Pentax tradition, so we can expect a 30mm with f1,2, 1,0 are to expensive to sale enough and 1,4 are to close to FA31. At the time then K50/1,2 was on sale, Pentax was big and also had 50mm with 2,0, 1,7, 1,4 and a Macro f4(but not so many zooms). I agree with this but why then does the display show F:1.0? If photoshopped, why? If theres something that can be done with a prototype, why? Anyway, a fast standard lens is missing form the Pentax lineup. My guess is that the coming 30mm is such a lens with speed of at least 1.4 to make much sense. The 31/1.8 doesn't really count; it is not a DA lens, it is not weather sealed, does not have SDM and generally doesn't fit in. I suspect it won't be in production for much longer.