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Old Aug 22, 2017, 10:28 PM   #1
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Default Sigma lens question.

I posted this question in the Pentax lens section and have a lot of views, but no replies. I'm hoping someone in this section can help.

Does anyone have any experience with this lens? This would be an all around lens. I will be putting this on a K-50 or Kx. I've seen some reviews that state it works much better with higher end bodies. Any help would be great.
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Old Aug 23, 2017, 6:00 AM   #2
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Which lenses?
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Old Aug 23, 2017, 7:07 AM   #3
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Sorry, that was the title of the thread in the other section. I was looking at the Sigma 18-300mm f/3.5-6.3 DC MACRO HSM Contemporary Lens as a travel/everyday walk around lens. Thanks for the reply.
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Old Aug 25, 2017, 9:43 AM   #4
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I do not have the lens but reviews are good but say it is a bit soft at 300, I would go whit the Pentax DA 55-300, I have one and am very happy with it's sharpness at 300. I also have the DA 18-135 and am also happy with it, it seems under rated. I use my Pentax gear mostly for sports and wildlife so the long end is important for me.
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...It is better to burn a roll of film than curse the darkness. Equip. K30, Q7, DAL 55-300, DA 35 f2.4, DA 50 f1.8 DA 18-135, SMC-M 28 f3.5, SMC M 50 f1.4, Canon P&S S100 w/CHDK Beta, Panasonic DMC-GM5, Flickr:
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Old Aug 31, 2017, 11:16 PM   #5
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I don't have that lens but am always a bit suspicious about lenses that try to do too much. Photography is about compromise and if you make too many compromises, you end up with poor quality. I've gone with 2 lenses to cover that range, if you want to go with zoom lenses. In fact, at the moment I'm mostly using the DFA 28-105 lens as a tourist type lens. I also use a 100mm macro lens for macro and then switch around for a longer lens.
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Old Sep 1, 2017, 9:03 PM   #6
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G'day CD

Several thoughts for you here - my Pentax / Sigma experiences have not been exciting ... I had the 18-135 and the 70-300DG-APO and was not taken with the sharpness of either unit. I had upgraded from the Panasonic FZ30 with its 12x Leica zoom lens, and my sharpness tests showed the Leica lens left the Sigmas way behind [tho the Pentax had a bigger/better sensor, it did not make better images]

I love the 10x zoom fixed-lens superzoom cameras for exactly the convenience you are talking about - but I have also found that the zoom lenses of 15x to 30x do suffer from the many compromises needed to make them workable

For me, I have backed away from anything over 10x zoom and now stick to that size. My current SLR camera-lens combo if the Panasonic G2 with the 14-140 lens [giving a film camera equiv of 28-280] and I find this more than okay for most stuff I do

As an aside - if I need longer than this, I use the Panny FZ200 with its reach of 600mm F2,8 - where any lack of IQ is more than balanced by the F2,8 reach of a 600 mm lens

Hope this helps
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Old Sep 2, 2017, 3:20 PM   #7
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Just picked up a Pentax FA 80-320 on auction for $40 it is quite good and excellent for the price, it is every bit as good as my DA 55-300 and it is a FF lens
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...It is better to burn a roll of film than curse the darkness. Equip. K30, Q7, DAL 55-300, DA 35 f2.4, DA 50 f1.8 DA 18-135, SMC-M 28 f3.5, SMC M 50 f1.4, Canon P&S S100 w/CHDK Beta, Panasonic DMC-GM5, Flickr:
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Old Sep 4, 2017, 9:20 AM   #8
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I am purchasing a carefully used FA 80-320mm from a friend of mine. Can't wait, the last decent 300mm I had was an old FA 100-300mm "plastic fantastic" a cheapie but with great results. I do not need a high end long lens since I do very little in the way of wildlife so a bargain lens with decent optics will suit me fine. If it is even close to the DA 55-300mm I will be pleased.
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