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02-14-2013, 11:51 AM - 33 Likes   #1
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K-5 and Sigma 50-500 OS

I would like to ask if there are people here who use k-5, k-5 or k-2 5 2s with Sigma 50-500 OS. I'm interested in the speed of focus throughout the range of k-5.
Currently shooting with a 150-500 WildLife and I am very happy but I am wondering if the focus is in the 50-500 faster and by how much ..
I would appreciate if photographers who shoot with a 50-500 OS to show video

Thanks in advance .. here are some of my results obtained with the k-5 and 150-500

You can see more pictures here

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02-14-2013, 12:03 PM - 1 Like   #2
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I know nothing about those lenses but just came by to say your photos are stunning!

Last edited by jpyykonen; 02-14-2013 at 12:33 PM.
02-14-2013, 12:29 PM   #3
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No kidding, jpyykonen. Unbelievable photos! Easily some of the best I've seen from the K-5 and Sigma 150-500. You should definitely submit some to the Pentaxforums Exclusive Gallery.

I should have my 50-500 OS in the next week or so, and then I can compare the focus speed (and other things) to my 150-500 OS. In the meanwhile, I can definitely say your images aren't suffering from using the 150-500!

Heck, contact Sigma and show them your work. They might send you a 50-500 OS for free!
02-14-2013, 12:58 PM   #4
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WOW. That's one impressive set of pictures!

02-14-2013, 01:03 PM   #5
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I'm not really into birding, but I have to agree, these are really, really nice!
02-14-2013, 01:05 PM   #6
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Excellent images.... what is it you're thinking could be better?
02-14-2013, 01:08 PM   #7
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Thank you!

I am new to this forum and still learning it
I am very pleased with both the PENTAX bodies who've used .. and the Sigma 150-500. I think for professional use this system is more than adequate.I have photographed all systems and lenses, and certainly what I get from my system enough for me.
I do not think I need to change 150-500 with 50-500. I just want to see how fast its focus from edge to edge. I have used Sigma 50-500 Nikon observations but I what about PENTAX K-5. I prefer the slow tricks for super fast.

Whether PENTAX enough for shooting birds with Sigma 150-500 lens?

this is a result which could not achieve even 1DMk4 and 100-400
02-14-2013, 01:13 PM   #8
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normhead: Only like 50 to150 mm because sometimes I need them
Quality of my sistem is more than enough

02-14-2013, 02:14 PM   #9
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Wow, dude, this is amazing. My hat is off, all pictures are great!
02-15-2013, 01:12 AM   #10
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Wow, just... wow !
Amazing shots.
02-15-2013, 01:34 AM   #11
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Can't answer the questions.....but....Sweet shots!! Love the action with all of those. I've been eying the Sigma 150-500 for awhile myself for the reach.
02-15-2013, 03:04 AM   #12
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Love those shots, I don't have either of those lens, but if the range between 50-150 is what you want , why not get a K-30 w/ Pentax DA 55-300 for less than the price of the Sigma 50-500 OS HSM?
02-15-2013, 03:17 AM   #13
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Stunning, very very well done!!!
02-15-2013, 05:05 AM   #14
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The best I have seen!
02-15-2013, 05:29 AM   #15
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The first is great!

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