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02-19-2015, 09:10 AM   #1
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K5IIs with Sigma 150-500 or Sigma 50-500

Hi,

I am presently using a Sigma 150-500 for birding/ wildlife and have gotten very good results in terms of sharpness and color (satisfying). I am curious as to if the Sigma 50-500 would perform as well or better as far as color, sharpness, and autofocus capability (speed/accuracy). I have the 150-500 on my K5IIs presently and the combination works very well. I would like to think that the 50-500 would give me the same level of image quality and autofocus performance if I opted to switch to it for the wider angle availability (50). I would be interested in some other user hands on opinions of the two, to get an idea of what I would possibly expect. Please note that of course I have the Pentax K mount version of the Sigma 150-500.

Thanks ahead of time for any helpful information.

Casey

02-19-2015, 12:50 PM   #2
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Hi Casey, if you don't want to go for close-up's on butterflies or flowers along your way out there in the "wild" nature close to your home, shooting mainly birds.... stick with the 150-500. The real "Bigma" (50-500) is not only heavier but also not that comfortable when hanging on your shoulder (right or left) for longer than a walk of 1hr. For Birding the 150-500 I liked a lot and many CaNikons show their results on the internet... Obviously one can have personal preferences... Plus: Sigma had and still have quality issues that count for both lenses. I read of some purchasers that changed the lenses back/forth quite often before receiving the "right" one... - I owned both lenses plus the Bigma without HSM drive and was lucky to get perfect ones each time...last purchase of the 50-500 HSM is now being used by my wife (mostly during summer period) combi with K30... works well. Have fun! Frank
02-19-2015, 02:11 PM   #3
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Thank you. I appreciate your opinion.
02-19-2015, 06:20 PM   #4
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I've been considering these two for a while now. I've seen enough head to head photo comparisons to believe that at the long end the 150-500 is actually a little bit sharper. Over the full length the 50-150 is the better for image quality. But for me I will want it for the long end in almost all cases so I'm still planning to purchase the 150-500 when the time is right.

02-19-2015, 06:34 PM   #5
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There is a comparison as part of this group here
http://www.juzaphoto.com/article.php?article=50
I like the range of my 50-500 for other uses besides birding, like kids football where the wide zoom comes in handy in sideline runs near my position.

A fellow forum member and I went out to shoot at a wetlands last year he with his 150-500 and I with the 50-500 and I didn't see an obvious difference in our shots.

I think if you just want the long end then keep your 150-500.
If you need the lower range in one lens then get the 50-500.

---------- Post added 02-19-15 at 05:50 PM ----------

Here's the English link. Four 100-400 tele zooms compared [JuzaPhoto]

Last edited by crewl1; 02-19-2015 at 06:41 PM. Reason: Corrected link
02-20-2015, 01:17 PM   #6
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QuoteOriginally posted by crewl1 Quote
Here's the English link. Four 100-400 tele zooms compared [JuzaPhoto]
Nope. Still Spanish (or ???)
02-20-2015, 01:44 PM   #7
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QuoteOriginally posted by calicojack Quote
Nope. Still Spanish (or ???)
Ha Ha must have pulled the wrong link again - try this Four 100-400 tele zooms compared [JuzaPhoto]

OK looks like the link defaults to italian - try copy and paste this in your browser
It needs that l=en to show the translated version.
02-20-2015, 01:50 PM   #8
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I am sort of awaiting the 18-300 Sigma for Pentax mount to be available to use with my K-5, to cover wide angle to mid-range subjects. As I mentioned I use the 150-500 with my K5IIs to do my birding/wildlife. If the 50-500 was as sharp as the 150-500 at the long end and from 150 up I might consider it for spur of the moment activity, since it has some wider angle capability. Since I really want the IQ/sharpness, I may not resort to the 50-500 if it will not give me the results the 150-500 does at the long end. Thank you so much for all of your input, I appreciate it.

---------- Post added 02-20-15 at 04:25 PM ----------

QuoteOriginally posted by crewl1 Quote
There is a comparison as part of this group here
Quattro tele zoom a confronto [JuzaPhoto]
I like the range of my 50-500 for other uses besides birding, like kids football where the wide zoom comes in handy in sideline runs near my position.

A fellow forum member and I went out to shoot at a wetlands last year he with his 150-500 and I with the 50-500 and I didn't see an obvious difference in our shots.

I think if you just want the long end then keep your 150-500.
If you need the lower range in one lens then get the 50-500.

---------- Post added 02-19-15 at 05:50 PM ----------

Here's the English link. Four 100-400 tele zooms compared [JuzaPhoto]
Thank you for the article information. It seems to express that more sharpness is present in the 50-500 results at the long end, but that the 150-500 makes up for that using OS. I was under the impression that the 50-500 for Pentax has the OS in the newest model. If it does, as you mentioned from your shooting experience that the results are nearly on par, then the lens may be an option for me to consider in the future if I need it. Thanks again. I appreciate the helpful input.

---------- Post added 02-20-15 at 04:28 PM ----------

Thank you everyone for your opinions. The information has really helped me.

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