Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
09-24-2019, 04:07 AM - 4 Likes   #136
Site Supporter
Site Supporter




Join Date: May 2019
Photos: Albums
Posts: 5,976
QuoteOriginally posted by xmeda Quote
What are the pentax replacements for my:

Sig 8-16 -> linearize the 10-17 Fisheye?
Sig 17-50/2.8 (Better IQ than DA*16-50) -> It's next on the replacement list, isn't it?
Sig 24-70/2.8 (Lens that works even on my film bodies, but ok, can be upgraded by PenTamron24-70/2.8) -> "I want the mostest modernest toys to use them on a 30 year old body", also known as "make up your mind".

Sig 35/1.4 -> you have a 35/2, but admittedly this one more or less makes sense.
Sig 70-200/2.8 (Fast ring ultrasonic AF motor) ->Pentax literally has one.
Sig 100-300/4 -> you can actually hand hold the PLM at the cost of one stop at 300mm
Sig 50-500? (No 100-450 is not 10x zoom, nowhere near flexible as Bigma) Can you please let me know of a situation in which you are hauling a 50-500 lens that weighs 2 kg for anything other than the long end?

None.. thats it.

Also I plan to get 18-35/1.8 while some still are available.
Either I'm developing precognition or you're getting predictable, because one sentence in (on mobile, so no avatars) I know who was posting the usual complainer spiel.

Dude, move on. Get a brand that gives you the contradictory requirements you have.

---------- Post added 09-24-19 at 04:08 AM ----------

QuoteOriginally posted by Kunzite Quote
There are many things untrue about his repeated claims, including the supposed lack of Pentax alternatives. And the basic logic of asking for replacements for lenses he already have.
I had a field day. It's somehow hilarious, despite the sad impression, how much some people stick to something they clearly despise.

09-24-2019, 04:20 AM - 3 Likes   #137
Digitiser of Film
Loyal Site Supporter
BigMackCam's Avatar

Join Date: Mar 2010
Location: North East of England
Posts: 20,576
QuoteOriginally posted by xmeda Quote
Yes Pentax bodies have problems focusing anything faster than F2.8... and F1.8 zoom is hell on earth for pentax SAFOX. Thats all. Contrast detect nails them.

Sig 17-50/2.8 might be "old" or whatever, but still optically superior to DA*16-50/2.8.
You're stating your opinion as fact. With respect, it is anything but. I take you at your word that you have had problems with AF, however...

All of the Pentax (and Samsung rebranded) bodies I own - *ist DL, GX-1L, K10D, GX-10, K-5, K-3 and K-3II - focus well with my faster lenses. The focusing is very reliable - by which I mean there are very few misses, and no more than with my other slower lenses.

I seem to recall you once mentioning you had problems with AF on your FA50/1.4 (if I've mis-attributed this to you, my apologies). I've never had a problem with my copy of the FA50/1.4 on any of my Pentax / Samsung bodies.

There are, however, numerous people who've had problems with Sigma AF lenses on Pentax bodies, the 18-35 f/1.8 being especially unreliable. Indeed, Canon folks experienced these same problems (there's plenty of evidence on the web about this), but Sigma released a firmware update for their EF mount lenses that greatly improved the AF performance. Sadly, no such update was ever provided for K-mount...

Last edited by BigMackCam; 09-24-2019 at 04:43 AM.
09-24-2019, 04:34 AM - 1 Like   #138
Pentaxian




Join Date: Feb 2017
Posts: 898
QuoteOriginally posted by xmeda Quote
Yes Pentax bodies have problems focusing anything faster than F2.8... and F1.8 zoom is hell on earth for pentax SAFOX. Thats all. Contrast detect nails them.
Yet another story. I had only one Sigma lens. EX DC 50-150 2.8 HSM II. When I bought it, it did not work in LV at all, and in PDAF only from around 60mm onwards. Sigma service said, that's and old lens and they can't fix it to work in LV with newer Pentax cameras (they could fix the latter problem, but refused to give me estimated price until I send it to them). I sold it with no regrets.

QuoteOriginally posted by xmeda Quote
Sig 17-50/2.8 might be "old" or whatever, but still optically superior to DA*16-50/2.8.
And when the replacement arrives, it will be much more expensive, so complaining won't end anyway...
09-24-2019, 05:01 AM - 1 Like   #139
Pentaxian
Jonathan Mac's Avatar

Join Date: Apr 2009
Location: Madrid, Spain
Posts: 10,852
I posted on the UK forum that this is a loss to the Pentax system as Sigma provide several lenses that I regard as important as I believe they're widely used and Pentax don't make an equivalent (either in optical qualities or price). The 17-50mm f/2.8 and the 10-20mm are good examples. It's a shame that they will no longer be available new and the Pentax system is lessened for that, I don't really see how anyone can argue otherwise.

I believe that the recent showing of the prototype flagship APS-C model (not something Pentax usually does) is an attempt to stop people leaving due to there being no successor to the K-3 II. I think they need to get their finger out and produce this camera in a final form as soon as possible as they have wonderful APS-C lenses with currently no APS-C flagship to use them on.

09-24-2019, 05:11 AM   #140
Senior Member
xmeda's Avatar

Join Date: Feb 2011
Location: Brno
Posts: 295
QuoteOriginally posted by Serkevan Quote

Sig 8-16 -> linearize the 10-17 Fisheye? No, not even close to rectilinear lens in usability.Try that yourself with multiple images. Not to mention that the fisheye is not very oriented on resolution.

Sig 17-50/2.8 (Better IQ than DA*16-50) -> It's next on the replacement list, isn't it? Where can I buy that replacement? I'm asking for DA*16-50/2.8 upgrade for years.
Sig 35/1.4 -> you have a 35/2, but admittedly this one more or less makes sense. 35/2 with six blades vs 35/1.4 with rounded nine.. why do you think I bought that sigma while having FA35/2 already? Not comparable lenses.
Sig 70-200/2.8 (Fast ring ultrasonic AF motor) ->Pentax literally has one. Nope, that Sigma focuses faster, which is kind of critical for such lens used to separate object from background. Would you rather have missed shot with slight gain in image quality or get the shot even if F2.8 fine details are better on modern lenses? (At F4 no difference at all, that Sigma is very good piece of glass. Yet still portable with just 1kg without collar)
Sig 100-300/4 -> you can actually hand hold the PLM at the cost of one stop at 300mm So you are suggesting light sucking F6.3 consumer grade lens over 100-300/4 hi end lens fully usable at F4?.. you must be kidding
Sig 50-500? (No 100-450 is not 10x zoom, nowhere near flexible as Bigma) Can you please let me know of a situation in which you are hauling a 50-500 lens that weighs 2 kg for anything other than the long end?Animals, birds and airshows. Option to go from relatively wide to extreme telephoto in second is priceless when things are moving quickly. Try that before saying such things. And it is very sad, that Sigma 60-600 is not going to be available for K mount...I would happily buy it.
Filled by blue font.

Yes we might hope for some future lenses.. but with Ricoh development tempo it will take decade to fill gaps.
09-24-2019, 05:17 AM - 2 Likes   #141
Site Supporter
Site Supporter




Join Date: May 2019
Photos: Albums
Posts: 5,976
QuoteOriginally posted by xmeda Quote
Filled by blue font.

Yes we might hope for some future lenses.. but with Ricoh development tempo it will take decade to fill gaps.
I get that Pentax does not fulfill your needs, so why suffer? Those of us who are happily pressing the shutter made an informed decision. At least I know I did. What baffles me is that, apparently, you did not. You have spent forever complaining about something that does not meet your needs now, did not meet your needs when the K20D came out, and probably won't meet them by the time the planet collapses.

I'm out.

Last edited by BigMackCam; 09-24-2019 at 08:05 AM. Reason: Keeping it friendly
09-24-2019, 05:37 AM - 2 Likes   #142
Pentaxian




Join Date: Feb 2017
Posts: 898
I dunno. I like to complain too (a Slavic thing, maybe?). If Ricoh wants some feedback from userbase, it shouldn't expect only praises.

But everything in moderation. Otherwise it gets old.

09-24-2019, 05:39 AM   #143
Senior Member




Join Date: Dec 2012
Location: Perth Western Australia
Photos: Gallery
Posts: 222
A wide range zoom eg Bigma or 70-200 can be very handy. Try focusing on smaller animals or birds and suddenly an African elephant is running towards you. In my case just got a great photo in at 70mm filling the whole frame in pictorial mode before the guide hit the accelerator and we moved out of the way. Priceless!
09-24-2019, 05:40 AM   #144
Pentaxian




Join Date: Feb 2017
Posts: 898
As for that 100-300... is it really that good? It has sports/wildlife range but is screwdriven... during my crop sensor days, I loved the 55-300 PLM for its fast focusing ability. The little engine that could. Maybe you should try it, xmeda.

Last edited by BarneyL; 09-24-2019 at 05:55 AM.
09-24-2019, 05:42 AM - 1 Like   #145
Site Supporter
Site Supporter




Join Date: May 2019
Photos: Albums
Posts: 5,976
QuoteOriginally posted by BarneyL Quote
I dunno. I like to complain too (a Slavic thing, maybe?). If Ricoh wants some feedback from userbase, it shouldn't expect only praises.

But everything in moderation. Otherwise it gets old.
I'm Spanish, complaining is the national sport
This is far too much even for me
09-24-2019, 06:04 AM   #146
Site Supporter
Site Supporter
Larrymc's Avatar

Join Date: Jun 2014
Location: Mississippi, USA
Posts: 5,245
QuoteOriginally posted by xmeda Quote
Filled by blue font.

Yes we might hope for some future lenses.. but with Ricoh development tempo it will take decade to fill gaps.
Hey, I'll give you $50 USD for all the lens that you seem to really hate and I might even throw in shipping charges too. Maybe this will relieve your problems so you want have to face the day shooting with all of that inferior equipment.

Do we have a deal??? Just let me know.
09-24-2019, 06:33 AM - 1 Like   #147
Pentaxian




Join Date: Apr 2007
Location: Romania
Posts: 15,132
QuoteOriginally posted by BarneyL Quote
As for that 100-300... is it really that good? It has sports/wildlife range but is screwdriven...
Its optics are good, but overall I say the D FA 150-450mm is superior (and obviously has a longer reach).
09-24-2019, 07:38 AM - 2 Likes   #148
Senior Member
xmeda's Avatar

Join Date: Feb 2011
Location: Brno
Posts: 295
Sigma 100-300/4 has screw AF mechanism, but it is one of fastest focusing fast telephoto you can get for Pentax K mount. With Pentax IBIS this lens gives perfect results. Images are on par with DA*300/4, but you have the handy zoom ability. And even the focusing accuracy is very good. I'm using that lens very often and only disadvantage is the size and weight. But some sacrifice for superior IQ is sometimes needed. That 100-300/4 has no true replacement. DFA150-450 is extending variable aperture lens that starts at 150mm, is even bulkier and does not provide F4 photos through the range. 55-300PLM is nice lens for hiking light, but completely different animal. Being discontinued about 6-7 years ago for other mounts it was somewhat replaced by Sigma 120-300/2.8 with OS.




And Sigma is known for many other unique lenses. That 50-500 and new 60-600 is another example. Nobody else has similar lens. 18-35/1.8 or 50-100/1.8 are in this category too.For wide angle APS-C the 8-16 is widest rectilinear lens for K mount available. They also had FF 12-24 lens which is the widest thing available for K1.


It would be cute to attach 50-100/1.8 lens on next Pentax APS-C body equipped with IBIS and enjoy superb low-light performance DSLR combo. Or the 20/1.4, 24/1.4.. But..

Last edited by BigMackCam; 09-24-2019 at 08:06 AM. Reason: Removed initial comments - no longer relevant
09-24-2019, 08:24 PM   #149
Pentaxian
reh321's Avatar

Join Date: Nov 2014
Location: South Bend, IN, USA
Photos: Gallery | Albums
Posts: 23,128
QuoteOriginally posted by xmeda Quote
Sigma 100-300/4 has screw AF mechanism, but it is one of fastest focusing fast telephoto you can get for Pentax K mount. With Pentax IBIS this lens gives perfect results. Images are on par with DA*300/4, but you have the handy zoom ability. And even the focusing accuracy is very good. I'm using that lens very often and only disadvantage is the size and weight. But some sacrifice for superior IQ is sometimes needed. That 100-300/4 has no true replacement. DFA150-450 is extending variable aperture lens that starts at 150mm, is even bulkier and does not provide F4 photos through the range. 55-300PLM is nice lens for hiking light, but completely different animal. Being discontinued about 6-7 years ago for other mounts it was somewhat replaced by Sigma 120-300/2.8 with OS.
I have a 1.4X TC 'semi-permanently' attached to the rear of my DA 55-300mm PLM, turning it into a 77-420mm lens - taking into account the fact that my KP is a 24mp camera, so I feel free to do a certain amount of cropping, this lens completely meets all my telephoto needs.

Last edited by reh321; 09-24-2019 at 08:31 PM. Reason: DA designation
09-24-2019, 08:31 PM   #150
Pentaxian
reh321's Avatar

Join Date: Nov 2014
Location: South Bend, IN, USA
Photos: Gallery | Albums
Posts: 23,128
QuoteOriginally posted by xmeda Quote
Yes Pentax bodies have problems focusing anything faster than F2.8...
Surely you kid!

My K-30 has issues following fast squirrels, but it does focus with every lens I have, and none is faster than f/4.

A 1.4X TC is 'semi-permanently' attached to the rear of my DA 55-300 f/4.5-6.3 lens, so at maximum length {420mm} it is something like a f/9 lens, but it still focuses every time.
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
adapter, business, camera, cameras, canon, care, concern, f2.8, lens, lenses, lenses for pentax, pentax, pentax news, pentax rumors, products, replacements, ricoh, rumor, sig, sigma, sigma & pentax, sigma stops k-mount, tamron, terms, third, third party manufacturers, users, weight
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Sigma EF-610 DG Super randomly stops firing ? Isnwm Troubleshooting and Beginner Help 2 08-28-2012 07:06 PM
Major vignetting with 10 - 20 sigma + B+W ND 110 (10 stops) kaiserz Troubleshooting and Beginner Help 3 06-10-2012 09:28 AM
Sigma 17-70 f2.8-4.5 (FL and f-stops) fLyIr Pentax SLR Lens Discussion 6 03-09-2011 09:42 AM
The K-X and K-7 support PTP - Doesn't PTP support tethered shooting? Russell-Evans Pentax DSLR Discussion 2 12-25-2009 10:04 PM



All times are GMT -7. The time now is 06:04 AM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top