Sigma 50-500 vs Pentax 150-450

Started 3 weeks ago | Discussions thread
Pontoneer Senior Member • Posts: 2,586
Re: Sigma 50-500 vs Pentax 150-450

Stigg wrote:

I'm still weighing the various options available as new for a Pentax mount long zoom. The 3rd party lens makers have little love to spare for the K mount and I keep finding myself returning to the above two options. They are similar in weight but not in range so I ask if anyone here has used both and can compare and contrast.

It would be easy to buy a Canon and open the door to a wide array of long zooms but i'm still partial to Pentax colors over Canon's.

The 150-450 was on sale but still above the price of the few new 50-500s still available, the lowest price of which I have found at $1200US here:

https://www.ebay.com/itm/SIGMA-50-500mm-f4-5-6-3-APO-DG-OS-HSM-for-Pentax-K-New-in-Box/292900805973?epid=1639965260&hash=item44323f9d55:g:uZ0AAOSw2hxcLZLc:rk:1:pf:0

I found the AF to be a bit inaccurate and relatively slow (but usable) on the K-01. Has anyone paired the 150-450 & K-01 and can offer their opinion? Maybe the AF situation might be the same with that camera.

I haven’t tried particularly long lenses on my K-01 , but I have found the AF to be relatively slow , and sometimes hit & miss , compared to my K-1 and K-3 .

The K-01 does focus quickly and accurately in good lighting and with certain lenses like the DA Limited primes , but I often use it with my SMC-M legacy lenses , so AF is unimportant to me .

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With kind regards
Derek.

 Pontoneer's gear list:Pontoneer's gear list
Pentax *ist D Pentax K-01 Pentax K-3 Pentax K-1 Pentax smc DA 15mm F4 ED AL Limited +38 more
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