HD Pentax DA * 16-50mm F2.8ED PLM AW is the second one.

reh321 · 03-12-2021, 08:20 AM

Originally posted by house

Ah ok, must have mixed it up with something else. From my fuzzy memory the front element moves a few mm inside the barrel.

aha, mid post i realised perhaps I got the info from the pentaxforums review and yes i found a handy gif courtesy of pentaxforums itself. So "external extension" maybe not but it's not fixed either. Which was precisely my point.

Probably doesn’t move enough to suck water in during a thunderstorm.

**Serkevan** · 03-12-2021, 08:22 AM

Originally posted by house

Ah ok, must have mixed it up with something else. From my fuzzy memory the front element moves a few mm inside the barrel.

aha, mid post i realised perhaps I got the info from the pentaxforums review and yes i found a handy gif courtesy of pentaxforums itself. So "external extension" maybe not but it's not fixed either. Which was precisely my point.

It can still be sealed with a filter screwed in, though. Well, you'll have some measure of humidity getting through to the lens because of the slight pressure difference, but it should be very little.

angerdan · 03-12-2021, 08:34 AM

Originally posted by house

So "external extension" maybe not but it's not fixed either. Which was precisely my point.

The outer barrel lenght is fixed, seems like a nice lens.

repaap · 03-12-2021, 08:34 AM

Originally posted by house

Ah ok, must have mixed it up with something else. From my fuzzy memory the front element moves a few mm inside the barrel.

aha, mid post i realised perhaps I got the info from the pentaxforums review and yes i found a handy gif courtesy of pentaxforums itself. So "external extension" maybe not but it's not fixed either. Which was precisely my point.

That kind of action my tokina 28-70 did too and also other lenses which has internal focusing, like DFA 15-30. lenght don't increase, elements have to move regardless when we talk about zooms.

house · 03-12-2021, 08:40 AM

I didn't assume that an extending design would be inferior in terms of weather sealing. Now that you mention it it probably is but the reason for mentioning it was that minor movement might be an advantageous design compromise between telescoping and fixed.

---------- Post added 03-12-21 at 08:47 AM ----------

Originally posted by repaap

elements have to move regardless when we talk about zooms

Well if it's an internal zoom the elements that move are internal. If the front element moves it's not an internal zoom right? You have focus and zoom but I assumed both had to be internal for it to be classified as internal.

mee · 03-12-2021, 09:20 AM

Originally posted by reh321

Probably doesn’t move enough to suck water in during a thunderstorm.

Probably not safe for you or your camera out in a thunderstorm.

Zygonyx · 03-12-2021, 12:17 PM - **1 Like**

Soooo.....
Will we eventually get availability and prices before the brand is sold ?

repaap · 03-12-2021, 02:03 PM

Originally posted by house

I didn't assume that an extending design would be inferior in terms of weather sealing. Now that you mention it it probably is but the reason for mentioning it was that minor movement might be an advantageous design compromise between telescoping and fixed.

---------- Post added 03-12-21 at 08:47 AM ----------

Well if it's an internal zoom the elements that move are internal. If the front element moves it's not an internal zoom right? You have focus and zoom but I assumed both had to be internal for it to be classified as internal.

Yes, there is lenses like my DFA*70-200 which is completelly internal, where nothing moves outside. But I have seen lenses marketed with IF design if outer diameter does not move. But stuff inside does. I agree that 11-18 front does move a bit, so it would not count.

angerdan · 03-12-2021, 03:41 PM

Originally posted by repaap

I agree that 11-18 front does move a bit, so it would not count.

Front moves inside the barrel, so it's like inner focus.

house · 03-31-2021, 01:24 PM

The DA*1650 is shown mounted on the camera in some of the K-3 III official product photos. My guess is that this means the wait shouldn't be very long.

**Mbaez** · 03-31-2021, 01:29 PM

I noticed that too in their Instagram posts.

Originally posted by house

The DA*1650 is shown mounted on the camera in some of the K-3 III official product photos. My guess is that this means the wait shouldn't be very long.

Smolk · 04-03-2021, 08:34 AM

price will be similar to the DA* 11-18mm I assume? I'm really curious about its performance.

house · 04-03-2021, 08:40 AM

I'm still hoping Pentax manages to release the DA*1650 in time for final reviews of the K-3 III. The full reviews would then be super boosted by a DA*16-50 cherry on top of the already good K-3 III!

I expect some moaning about the size though...

**Serkevan** · 04-03-2021, 09:10 AM

Originally posted by Smolk

price will be similar to the DA* 11-18mm I assume? I'm really curious about its performance.

I guess somewhat lower - fast UWA zooms are typically more expensive than similar quality standard zooms.

reh321 · 04-03-2021, 09:15 AM

Originally posted by Serkevan

I guess somewhat lower - fast UWA zooms are typically more expensive than similar quality standard zooms.

Wide-angle lenses are more complicated for DSLR - farther from the flange distance.

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03-12-2021, 08:20 AM	#271
reh321 Pentaxian Join Date: Nov 2014 Location: South Bend, IN, USA Photos: Gallery \| Albums Posts: 23,180	Originally posted by house Ah ok, must have mixed it up with something else. From my fuzzy memory the front element moves a few mm inside the barrel. aha, mid post i realised perhaps I got the info from the pentaxforums review and yes i found a handy gif courtesy of pentaxforums itself. So "external extension" maybe not but it's not fixed either. Which was precisely my point. Probably doesn’t move enough to suck water in during a thunderstorm.

03-12-2021, 08:22 AM	#272
Serkevan Site Supporter Join Date: May 2019 Photos: Albums Posts: 5,976	Originally posted by house Ah ok, must have mixed it up with something else. From my fuzzy memory the front element moves a few mm inside the barrel. aha, mid post i realised perhaps I got the info from the pentaxforums review and yes i found a handy gif courtesy of pentaxforums itself. So "external extension" maybe not but it's not fixed either. Which was precisely my point. It can still be sealed with a filter screwed in, though. Well, you'll have some measure of humidity getting through to the lens because of the slight pressure difference, but it should be very little.

03-12-2021, 08:34 AM	#273
angerdan Pentaxian Join Date: Feb 2015 Photos: Gallery \| Albums Posts: 2,639	Originally posted by house So "external extension" maybe not but it's not fixed either. Which was precisely my point. The outer barrel lenght is fixed, seems like a nice lens.

03-12-2021, 08:34 AM	#274
repaap Pentaxian Join Date: Oct 2010 Photos: Gallery \| Albums Posts: 6,242	Originally posted by house Ah ok, must have mixed it up with something else. From my fuzzy memory the front element moves a few mm inside the barrel. aha, mid post i realised perhaps I got the info from the pentaxforums review and yes i found a handy gif courtesy of pentaxforums itself. So "external extension" maybe not but it's not fixed either. Which was precisely my point. That kind of action my tokina 28-70 did too and also other lenses which has internal focusing, like DFA 15-30. lenght don't increase, elements have to move regardless when we talk about zooms.

03-12-2021, 08:40 AM	#275
house Pentaxian Join Date: May 2015 Photos: Albums Posts: 3,306	I didn't assume that an extending design would be inferior in terms of weather sealing. Now that you mention it it probably is but the reason for mentioning it was that minor movement might be an advantageous design compromise between telescoping and fixed. ---------- Post added 03-12-21 at 08:47 AM ---------- Originally posted by repaap elements have to move regardless when we talk about zooms Well if it's an internal zoom the elements that move are internal. If the front element moves it's not an internal zoom right? You have focus and zoom but I assumed both had to be internal for it to be classified as internal.

03-12-2021, 09:20 AM	#276
mee Veteran Member Join Date: May 2010 Posts: 7,403	Originally posted by reh321 Probably doesn’t move enough to suck water in during a thunderstorm. Probably not safe for you or your camera out in a thunderstorm.

03-12-2021, 12:17 PM - 1 Like	#277
Zygonyx Pentaxian Join Date: Jun 2011 Location: Ile de France Posts: 4,033	Soooo..... Will we eventually get availability and prices before the brand is sold ?

03-12-2021, 02:03 PM	#278
repaap Pentaxian Join Date: Oct 2010 Photos: Gallery \| Albums Posts: 6,242	Originally posted by house I didn't assume that an extending design would be inferior in terms of weather sealing. Now that you mention it it probably is but the reason for mentioning it was that minor movement might be an advantageous design compromise between telescoping and fixed. ---------- Post added 03-12-21 at 08:47 AM ---------- Well if it's an internal zoom the elements that move are internal. If the front element moves it's not an internal zoom right? You have focus and zoom but I assumed both had to be internal for it to be classified as internal. Yes, there is lenses like my DFA*70-200 which is completelly internal, where nothing moves outside. But I have seen lenses marketed with IF design if outer diameter does not move. But stuff inside does. I agree that 11-18 front does move a bit, so it would not count.

03-12-2021, 03:41 PM	#279
angerdan Pentaxian Join Date: Feb 2015 Photos: Gallery \| Albums Posts: 2,639	Originally posted by repaap I agree that 11-18 front does move a bit, so it would not count. Front moves inside the barrel, so it's like inner focus.

03-31-2021, 01:24 PM	#280
house Pentaxian Join Date: May 2015 Photos: Albums Posts: 3,306	The DA*1650 is shown mounted on the camera in some of the K-3 III official product photos. My guess is that this means the wait shouldn't be very long.

03-31-2021, 01:29 PM	#281
Mbaez Site Supporter Join Date: Jun 2018 Location: NY Photos: Albums Posts: 3,774	I noticed that too in their Instagram posts. Originally posted by house The DA*1650 is shown mounted on the camera in some of the K-3 III official product photos. My guess is that this means the wait shouldn't be very long.

04-03-2021, 08:34 AM	#282
Smolk Pentaxian Join Date: Feb 2010 Location: Eerbeek Photos: Gallery \| Albums Posts: 1,857	price will be similar to the DA* 11-18mm I assume? I'm really curious about its performance.

04-03-2021, 08:40 AM	#283
house Pentaxian Join Date: May 2015 Photos: Albums Posts: 3,306	I'm still hoping Pentax manages to release the DA1650 in time for final reviews of the K-3 III. The full reviews would then be super boosted by a DA16-50 cherry on top of the already good K-3 III! I expect some moaning about the size though...

04-03-2021, 09:10 AM	#284
Serkevan Site Supporter Join Date: May 2019 Photos: Albums Posts: 5,976	Originally posted by Smolk price will be similar to the DA* 11-18mm I assume? I'm really curious about its performance. I guess somewhat lower - fast UWA zooms are typically more expensive than similar quality standard zooms.

04-03-2021, 09:15 AM	#285
reh321 Pentaxian Join Date: Nov 2014 Location: South Bend, IN, USA Photos: Gallery \| Albums Posts: 23,180	Originally posted by Serkevan I guess somewhat lower - fast UWA zooms are typically more expensive than similar quality standard zooms. Wide-angle lenses are more complicated for DSLR - farther from the flange distance.