New zoom 70-200 F4

Kunzite · 01-07-2020, 08:36 AM - **2 Likes**

Originally posted by reh321

Since the DFA 150-450 is a f/4.5-5.6 lens, those who want "constant wide" ~~may~~ will not be satisfied at all with this choice.

"No, you can't always get what you want
You can't always get what you want
You can't always get what you want
But if you try sometime you find
You get what you need"

The D FA compensates by being longer.
Ignoring such an amazing option to ask for something somewhat different, that's just moving the goalposts with the purpose of never being satisfied.

Dan Rentea · 01-07-2020, 10:04 AM - **2 Likes**

Originally posted by reh321

Since the DFA 150-450 is a f/4.5-5.6 lens, those who want "constant wide" ~~may~~ will not be satisfied at all with this choice.

The reason of the constant aperture is that a 100-400mm f4 lens for example can be used with both 1.4x and 2x TCs and still have very good tracking on some cameras.

At 400mm f4 with 1.4x TC = 560mm at f5.6 (110mm longer than 450mm from the Pentax 150-450mm at the same aperture).

400mm f4 with 2x TC = 800mm f8 (there are quite a few cameras these days that have more than 25 af points sensitive to f8 and you're have the option to track action with those af points).

But, it will be heavy and expensive such a lens...

xmeda · 01-07-2020, 11:01 AM

Having some hypothetical HD-DFA*100-300/4 we'll be able to happily remove DFA150-450 and replace it with some DFA150-600

Btw. 100-300 attached on APS-C is the same as 150-450 on FF.. and F4 with 1.5TC results in same 150-450/6.3
Preferably in single barrel design where nothing extends when zooming. Like the one below, but with modern optic components and some strong silent ring ultrasonic motor

Kunzite · 01-07-2020, 11:06 AM

Originally posted by Dan Rentea

The reason of the constant aperture is that a 100-400mm f4 lens for example can be used with both 1.4x and 2x TCs and still have very good tracking on some cameras.

At 400mm f4 with 1.4x TC = 560mm at f5.6 (110mm longer than 450mm from the Pentax 150-450mm at the same aperture).

400mm f4 with 2x TC = 800mm f8 (there are quite a few cameras these days that have more than 25 af points sensitive to f8 and you're have the option to track action with those af points).

But, it will be heavy and expensive such a lens...

And a 300mm f/4 with 1.4x RC gets you 420mm at f5.6. So you'd really have to get "heavy and expensive" to outdo the D FA 150-450.

IMO the supposedly affordable 70-300-ish telephoto is more important for Pentax, than a 100-400 f/4. Or the 70-200 f/4. I might want the later...

---------- Post added 07-01-20 at 08:17 PM ----------

Originally posted by xmeda

Having some hypothetical HD-DFA*100-300/4 we'll be able to happily remove DFA150-450 and replace it with some DFA150-600

You cannot replace the D FA 150-450 since you don't own one

I'm not sure I'd be happy with a significantly larger 150-600mm, 3kg for the lens itself...

xmeda · 01-07-2020, 03:24 PM - **2 Likes**

Originally posted by Kunzite

IMO the supposedly affordable 70-300-ish telephoto is more important for Pentax, than a 100-400 f/4. Or the 70-200 f/4. I might want the later...

Fully agree with this. But lets make it 60-300/4-5.6 because nobody else has such lens and it will be more attractive for APS-C users too..

I'm sad about the 55-300 PLM. That was nice opportunity to do such step. Now they have several APS-C compact telephotos, but nothing for FF. Although DA55-300 is somewhat usable even on K1 with some vignetting, that can be cropped out.

Well.. it works on film too..

Proof: DA55-300 on MZ-10 with some old expired agfa @ lot of sun during sunset.

reh321 · 01-07-2020, 05:46 PM - **1 Like**

Originally posted by xmeda

Fully agree with this. But lets make it 60-300/4-5.6 because nobody else has such lens and it will be more attractive for APS-C users too.

I'm sad about the 55-300 PLM. That was nice opportunity to do such step. Now they have several APS-C compact telephotos, but nothing for FF.

Yes, they have both the DA 55-300 f/4-5.8 and the DA 55-300 f/4.5-5.3 PLM. The second is so much better in speed and noise than the first. I own both of them. I wonder how many would have been sold if the second had been a DFA lens instead of a DA lens? I'm not convinced that many go to the K-1 series thinking of photographing animals {remember the reaction to it as a "K-3ii replacement"}. I expect the company is better off this way.

aurele · 01-09-2020, 01:52 AM

Originally posted by reh321

Yes, they have both the DA 55-300 f/4-5.8 and the DA 55-300 f/4.5-5.3 PLM. The second is so much better in speed and noise than the first. I own both of them. I wonder how many would have been sold if the second had been a DFA lens instead of a DA lens? I'm not convinced that many go to the K-1 series thinking of photographing animals {remember the reaction to it as a "K-3ii replacement"}. I expect the company is better off this way.

If the DA 55-300PLM was a DFA I would say a lot of people would have buy it.
I think the DFA 70-300 on the road map will sell like hot cake.

I have a 2.8 trio zoom lens, but a light, high quality zoom, would definitely be a perfect fit for me for casual moment when I don't need the triumvirate.

Y.goussyra · 01-15-2020, 04:27 PM

Thank you for sharing

Thomas SPII · 01-17-2020, 02:33 PM - **4 Likes**

Hello,

this is my first post, but i think you like to read it: my local pentax shop told me, that the 70-200 / f 4 will be announced next Thursday and will probably in the shops midth of February.

i already ordered one!

Greetings,
thomas

Sandy Hancock · 01-17-2020, 02:51 PM

Originally posted by Thomas SPII

my local pentax shop told me, that the 70-200 / f 4 will be announced next Thursday and will probably in the shops midth of February.

If they are right, that news will please a lot of Pentaxians!

Welcome

WorksAsIntended · 01-17-2020, 03:47 PM

Originally posted by Thomas SPII

Hello,

this is my first post, but i think you like to read it: my local pentax shop told me, that the 70-200 / f 4 will be announced next Thursday and will probably in the shops midth of February.

i already ordered one!

Greetings,
thomas

Did they tell you a ballpark of the weight?

BROO · 01-17-2020, 04:25 PM

Originally posted by Thomas SPII

i already ordered one!

How much?

**mlt** · 01-17-2020, 05:49 PM

Originally posted by Thomas SPII

Hello,

this is my first post, but i think you like to read it: my local pentax shop told me, that the 70-200 / f 4 will be announced next Thursday and will probably in the shops midth of February.

i already ordered one!

Greetings,
thomas

Do we have any confirmation from other sources?

Mistral75 · 01-17-2020, 06:27 PM

Originally posted by mlt

Do we have any confirmation from other sources?

Ask your 'local Pentax shop'!

MikeyBugs95 · 01-17-2020, 06:55 PM

Originally posted by Mistral75

Ask your 'local Pentax shop'!

Oh... So eBay? That's where I get most of my Pentax stuff.

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01-07-2020, 08:36 AM - 2 Likes	#976
Kunzite Pentaxian Join Date: Apr 2007 Location: Romania Posts: 15,132	Originally posted by reh321 Since the DFA 150-450 is a f/4.5-5.6 lens, those who want "constant wide" ~~may~~ will not be satisfied at all with this choice. "No, you can't always get what you want You can't always get what you want You can't always get what you want But if you try sometime you find You get what you need" The D FA compensates by being longer. Ignoring such an amazing option to ask for something somewhat different, that's just moving the goalposts with the purpose of never being satisfied.

01-07-2020, 10:04 AM - 2 Likes	#977
Dan Rentea Veteran Member Join Date: Sep 2014 Location: Bucharest Posts: 1,716	Originally posted by reh321 Since the DFA 150-450 is a f/4.5-5.6 lens, those who want "constant wide" ~~may~~ will not be satisfied at all with this choice. The reason of the constant aperture is that a 100-400mm f4 lens for example can be used with both 1.4x and 2x TCs and still have very good tracking on some cameras. At 400mm f4 with 1.4x TC = 560mm at f5.6 (110mm longer than 450mm from the Pentax 150-450mm at the same aperture). 400mm f4 with 2x TC = 800mm f8 (there are quite a few cameras these days that have more than 25 af points sensitive to f8 and you're have the option to track action with those af points). But, it will be heavy and expensive such a lens...

01-07-2020, 11:01 AM	#978
xmeda Senior Member Join Date: Feb 2011 Location: Brno Posts: 295	Having some hypothetical HD-DFA*100-300/4 we'll be able to happily remove DFA150-450 and replace it with some DFA150-600 Btw. 100-300 attached on APS-C is the same as 150-450 on FF.. and F4 with 1.5TC results in same 150-450/6.3 Preferably in single barrel design where nothing extends when zooming. Like the one below, but with modern optic components and some strong silent ring ultrasonic motor

01-07-2020, 11:06 AM	#979
Kunzite Pentaxian Join Date: Apr 2007 Location: Romania Posts: 15,132	Originally posted by Dan Rentea The reason of the constant aperture is that a 100-400mm f4 lens for example can be used with both 1.4x and 2x TCs and still have very good tracking on some cameras. At 400mm f4 with 1.4x TC = 560mm at f5.6 (110mm longer than 450mm from the Pentax 150-450mm at the same aperture). 400mm f4 with 2x TC = 800mm f8 (there are quite a few cameras these days that have more than 25 af points sensitive to f8 and you're have the option to track action with those af points). But, it will be heavy and expensive such a lens... And a 300mm f/4 with 1.4x RC gets you 420mm at f5.6. So you'd really have to get "heavy and expensive" to outdo the D FA 150-450. IMO the supposedly affordable 70-300-ish telephoto is more important for Pentax, than a 100-400 f/4. Or the 70-200 f/4. I might want the later... ---------- Post added 07-01-20 at 08:17 PM ---------- Originally posted by xmeda Having some hypothetical HD-DFA*100-300/4 we'll be able to happily remove DFA150-450 and replace it with some DFA150-600 You cannot replace the D FA 150-450 since you don't own one I'm not sure I'd be happy with a significantly larger 150-600mm, 3kg for the lens itself...

01-07-2020, 03:24 PM - 2 Likes	#980
xmeda Senior Member Join Date: Feb 2011 Location: Brno Posts: 295	Originally posted by Kunzite IMO the supposedly affordable 70-300-ish telephoto is more important for Pentax, than a 100-400 f/4. Or the 70-200 f/4. I might want the later... Fully agree with this. But lets make it 60-300/4-5.6 because nobody else has such lens and it will be more attractive for APS-C users too.. I'm sad about the 55-300 PLM. That was nice opportunity to do such step. Now they have several APS-C compact telephotos, but nothing for FF. Although DA55-300 is somewhat usable even on K1 with some vignetting, that can be cropped out. Well.. it works on film too.. Proof: DA55-300 on MZ-10 with some old expired agfa @ lot of sun during sunset.

01-07-2020, 05:46 PM - 1 Like	#981
reh321 Pentaxian Join Date: Nov 2014 Location: South Bend, IN, USA Photos: Gallery \| Albums Posts: 23,180	Originally posted by xmeda Fully agree with this. But lets make it 60-300/4-5.6 because nobody else has such lens and it will be more attractive for APS-C users too. I'm sad about the 55-300 PLM. That was nice opportunity to do such step. Now they have several APS-C compact telephotos, but nothing for FF. Yes, they have both the DA 55-300 f/4-5.8 and the DA 55-300 f/4.5-5.3 PLM. The second is so much better in speed and noise than the first. I own both of them. I wonder how many would have been sold if the second had been a DFA lens instead of a DA lens? I'm not convinced that many go to the K-1 series thinking of photographing animals {remember the reaction to it as a "K-3ii replacement"}. I expect the company is better off this way.

01-09-2020, 01:52 AM	#982
aurele Veteran Member Join Date: Jan 2011 Location: Paris, France Photos: Albums Posts: 3,217	Originally posted by reh321 Yes, they have both the DA 55-300 f/4-5.8 and the DA 55-300 f/4.5-5.3 PLM. The second is so much better in speed and noise than the first. I own both of them. I wonder how many would have been sold if the second had been a DFA lens instead of a DA lens? I'm not convinced that many go to the K-1 series thinking of photographing animals {remember the reaction to it as a "K-3ii replacement"}. I expect the company is better off this way. If the DA 55-300PLM was a DFA I would say a lot of people would have buy it. I think the DFA 70-300 on the road map will sell like hot cake. I have a 2.8 trio zoom lens, but a light, high quality zoom, would definitely be a perfect fit for me for casual moment when I don't need the triumvirate.

01-15-2020, 04:27 PM	#983
Y.goussyra Senior Member Join Date: May 2019 Location: Agadir city -Morocco Photos: Gallery Posts: 210	Thank you for sharing

01-17-2020, 02:33 PM - 4 Likes	#984
Thomas SPII New Member Join Date: Apr 2014 Location: Passau Posts: 3	Hello, this is my first post, but i think you like to read it: my local pentax shop told me, that the 70-200 / f 4 will be announced next Thursday and will probably in the shops midth of February. i already ordered one! Greetings, thomas

01-17-2020, 02:51 PM	#985
Sandy Hancock Moderator Site Supporter Join Date: Feb 2012 Location: Adelaide Hills, South Australia Photos: Gallery \| Albums Posts: 11,272	Originally posted by Thomas SPII my local pentax shop told me, that the 70-200 / f 4 will be announced next Thursday and will probably in the shops midth of February. If they are right, that news will please a lot of Pentaxians! Welcome

01-17-2020, 03:47 PM	#986
WorksAsIntended Veteran Member Join Date: Apr 2018 Posts: 639	Originally posted by Thomas SPII Hello, this is my first post, but i think you like to read it: my local pentax shop told me, that the 70-200 / f 4 will be announced next Thursday and will probably in the shops midth of February. i already ordered one! Greetings, thomas Did they tell you a ballpark of the weight?

01-17-2020, 04:25 PM	#987
BROO Veteran Member Join Date: Feb 2016 Photos: Gallery \| Albums Posts: 655	Originally posted by Thomas SPII i already ordered one! How much?

01-17-2020, 05:49 PM	#988
mlt Site Supporter Join Date: Dec 2007 Posts: 1,159	Originally posted by Thomas SPII Hello, this is my first post, but i think you like to read it: my local pentax shop told me, that the 70-200 / f 4 will be announced next Thursday and will probably in the shops midth of February. i already ordered one! Greetings, thomas Do we have any confirmation from other sources?

01-17-2020, 06:27 PM	#989
Mistral75 Pentaxian Join Date: Feb 2009 Location: Paris, France Posts: 7,527	Originally posted by mlt Do we have any confirmation from other sources? Ask your 'local Pentax shop'!

01-17-2020, 06:55 PM	#990
MikeyBugs95 Pentaxian Join Date: Sep 2017 Location: New York Photos: Gallery \| Albums Posts: 1,206	Originally posted by Mistral75 Ask your 'local Pentax shop'! Oh... So eBay? That's where I get most of my Pentax stuff.