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09-12-2019, 02:03 PM   #121
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QuoteOriginally posted by Serkevan Quote
Didn't they announce a 120-300/2.8 for the D6? I guess it's that one.
Yes, that one.

09-12-2019, 02:03 PM   #122
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QuoteOriginally posted by Serkevan Quote
Didn't they announce a 120-300/2.8 for the D6? I guess it's that one.
Okay, that project might have been going for three years.

We saw all this with Sony A. Lenses and updates already being worked on appeared, but the executives had clearly decided to kill the platform.

You'd think such a lens would go well with a successor to the D500, a wonderful sports camera, but it was also rumoured that won't happen.

Nikon are admirable in many ways, but their sales are a disaster and the board will insist on changes, including big budget cuts.
09-12-2019, 05:00 PM - 1 Like   #123
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QuoteOriginally posted by stevebrot Quote
Just out of curiosity, how many of the participants on this thread have purchased a Sigma product for Pentax, new, in the last five years. Don't be bashful.

Sigma? Sigma? Nobody has bought Sigma?


Steve

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The Sigma 150-500 after it dropped below $1000 in 2014...Sold it here in the spring...The D FA 150-450 is a much better lens...
09-12-2019, 07:41 PM - 1 Like   #124
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QuoteOriginally posted by Mistral75 Quote
None at all.Canon officially releases EOS 90D DSLR with 32.5 Megapixels and 4K video: Digital Photography ReviewNikon developing D6 professional DSLR: Digital Photography ReviewNikon working on 120-300mm F2.8E full-frame tele-zoom lens: Digital Photography Review
Not at all , you won for the sake of exactitude (important in camera forums), you found 1 exception to the rule, from Canon and 1 from Nikon. Just looking at Nikon road map, something like a dozen of new lenses for the Z mount. I've known the Pareto principle a long time ago, and it is very useful in real life, you should try it .


Last edited by biz-engineer; 09-12-2019 at 07:50 PM.
09-12-2019, 09:33 PM   #125
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Pareto principle how to apply this principal to Pentax business
09-12-2019, 10:19 PM - 1 Like   #126
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QuoteOriginally posted by dstar Quote
Pareto principle how to apply this principal to Pentax business
You won't like the answer, Dstar.

You withdraw your head into your shell, forget most buyers, you're targeting only the 20 percent wealthiest. And you have to charge them a *lot* to make the exercise worthwhile, with fewer products and lower volumes.

This move comes easier to Pentax than it does to Canon, Nikon and Sony because they invested so much employment, marketing and plant capacity to be market leaders in the last decade, it's hard to see how they can do it without huge layoffs and writedowns.
09-12-2019, 10:24 PM   #127
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No more Sigma, now that is good news Bring on the Pentax lenses

09-15-2019, 03:53 AM   #128
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QuoteOriginally posted by BarneyL Quote
Honestly, I had some hopes that Sigma would actually release something new for the K-mount, seeing how the other DSLR companies are focused on mirrorless now, while most of the Sigma's lineup still consists of lenses designed for the flappy mirror. The demand for those falls, so every bit sold counts a lot more, right?

However, if Pentax comes up with their own 85/1.4 and a F/1.4 UWA prime, there won't be that much to miss really. Their zooms have notorious AF accuracy problems, and primes like 105/1.4, 14/1.8 or 40/1.4 are vanity projects - nice to have such an option, but it's nothing essential.
I have two Sigma zooms and neither one has anything like an AF problem, nor has my Sigma primes.

But, a big but, when I used Sigma zooms on my Pentax K-5 there were a lot of problems, the 150-500 being the worst.

When used with my simpler Nikon cameras the Sigmas I now have are all spot on (no AF adjustment needed), in good light 90% are spot on, at least.

So I don't think the problem was with the lenses, but with the communication between Pentax and Sigma, which for some reason wasn't very good, as I actually don't think Sigma has done some technical miracle, just that they speak the same technical language as Nikon.

Nikon does not always speak with Nikon, that is, some Nikon cameras simply work as bad with certain Nikon lenses as a K-5 with a Sigma lens (you probably know the drill: they hesitate, restart from close-focused, and try again, over and over till they, or you, just give up). But that is extremely rare in the world of Nikon, I hasten to add, and it has never happened with my newer lenses, like the AF-P series.

With my most expensive lens, ever, this weird cycle happened so fast that it sounded like a classic, Great War era, water-cooled machine gun (yep, been around that as well, very live, and very noisy). Asked Nikon to fix it but they could not. All within set limits, they told me.

On FX cameras this lens is still very popular, and it is now much cheaper!

I have no issues with any of my Sigma lenses nowadays, so I am planning to get some more!

Last edited by Tord; 09-15-2019 at 04:33 AM.
09-16-2019, 05:51 AM   #129
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QuoteOriginally posted by stevebrot Quote
Just out of curiosity, how many of the participants on this thread have purchased a Sigma product for Pentax, new, in the last five years. Don't be bashful.

Sigma? Sigma? Nobody has bought Sigma?


Steve

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Brand new 70-200 F2.8 HSM II 3 months ago.
09-18-2019, 11:23 PM   #130
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that 50-500os is still one of my favorite lens.
I will keep using sigma on other brand DSLR.
09-24-2019, 01:31 AM   #131
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What are the pentax replacements for my:

Sig 8-16
Sig 17-50/2.8 (Better IQ than DA*16-50)
Sig 24-70/2.8 (Lens that works even on my film bodies, but ok, can be upgraded by PenTamron24-70/2.8)

Sig 35/1.4
Sig 70-200/2.8 (Fast ring ultrasonic AF motor)
Sig 100-300/4
Sig 50-500? (No 100-450 is not 10x zoom, nowhere near flexible as Bigma)

None.. thats it.

Also I plan to get 18-35/1.8 while some still are available.
09-24-2019, 02:34 AM - 1 Like   #132
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QuoteOriginally posted by xmeda Quote
Sig 17-50/2.8 (Better IQ than DA*16-50)
Funny thing - I went to photo workshops sponsored by Sigma around two years ago; Sigma dealer brought some of their lenses in various mounts for participants to try. In K mount, he brought only 35 Art. I asked him about other lenses, and he said he could have brought 17-50 (the rest he would need to order and that would take a while), but it's older lens and he does not recommend it.

I repeat, Sigma dealer said, he does not recommend this lens.

(BTW, I tried that 35mm while there, PDAF had insane backfocus but I managed to use it in LV with good results)

QuoteOriginally posted by xmeda Quote
Also I plan to get 18-35/1.8 while some still are available.
I recommend buying at least three of those to have a good chance of one having AF working properly. My friend send one along with his K-3 to authorized service for calibration, and when it returned, it performed worse than out of the box.

Sigma dropping K mount isn't good news, as less choice is always worse. But those "where's my Pentax replacement for lens X" posts are just whining IMHO.
09-24-2019, 02:51 AM   #133
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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.
09-24-2019, 03:01 AM - 1 Like   #134
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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.
Untrue. I shoot with f1.4 and f1.8 Pentax primes all the time with no problem.

The issue is Sigma reverse engineers their auto focus protocols and did a poor job with Pentax.
09-24-2019, 03:49 AM - 1 Like   #135
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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.
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