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09-12-2016, 05:39 PM   #1
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Sigma 150mm - 600mm vs Tamaron 150mm - 600mm

I am thinking of purchasing one of these lenses (if they are available in a Pentax mount) and would appreciate hearing your views and/or comments.

Michael

09-12-2016, 05:42 PM   #2
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Neither lens is available in Pentax K Mount.
09-12-2016, 05:44 PM   #3
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A lot of people would love to see these in a K-mount.
09-12-2016, 05:47 PM   #4
Des
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If you are sticking with K-mount, don't waste your time Michael. Neither is available in K-mount, and no indication that either is likely to be.

The current long options (apart from the Bigma, which you have) are DFA 150-450 or DA 560, each at a much higher price.

If you want a current model budget long option, you might be better to get the Tamron or Sigma in Canon or Nikon mount and buy a second-hand body to use it with.

09-12-2016, 06:19 PM   #5
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If you go the canikon route wait for the Gen 2 version of the Tamron which will be WR and less expensive than the Sigma Sport. We can only hope that Tamron will make the Gen 2 in the K mount.
09-12-2016, 06:22 PM   #6
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QuoteOriginally posted by Scorpio71GR Quote
Neither lens is available in Pentax K Mount.
Santa Clause or the Easter Bunny? Ah, well, doesn't matter. Like the two lenses in question or K mount, these are all figments of our imagination.
09-12-2016, 06:40 PM   #7
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Bilbo or Frodo?
09-12-2016, 07:11 PM   #8
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No p/k mount. Thanks gang. That makes the decision so much easier..... have to stick with the Bigma. Boy my arms are tired from handholding ........😣 Thought I saw an opportunity for lighter glass.

09-12-2016, 08:01 PM   #9
Des
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QuoteOriginally posted by Mapleleaf-Mick Quote
have to stick with the Bigma. Boy my arms are tired from handholding ........😣 Thought I saw an opportunity for lighter glass.
Not really - the Tamron and Sigma weigh about the same as the Bigma.

And no use suggesting this 5.4kg behemoth either: SMC Pentax-FA* 250-600mm F5.6 ED [IF] Reviews - FA Zoom Lenses - Pentax Lens Reviews & Lens Database

If you want something lighter (about 900g) but affordable (<$C900), consider a F/FA*300 f4.5 (with your TC if need be). I have the FA* and it's really superb. Images take a lot of cropping. Easy to handhold.
09-12-2016, 08:11 PM   #10
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1) make a petition with Pentax forum for Sigma or Tamron so their 150-600 on Pentax
2) Wait a Pentax adapter nikon, canon or sony so
3) buy a aps-c nikon, canon see sony
09-12-2016, 08:22 PM   #11
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I have the Tokina 400mm ATX Pro F5.6 which is super sharp and not bad weight wise. It is hand holdable I was just looking for the extra 100mm+ over the Bigma.
09-12-2016, 11:51 PM   #12
Des
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Makes sense Mick. I've got the Sigma 400 f5.6 tele macro, which is similar. I used to have a Sigma 170-500 that weighed around 1300 grams, but it was overtaken for image quality by the later 150-500 and 50-500, at the price of more glass and more weight.

I doubt we will see a new K-mount lens in the 500mm+ class that is significantly lighter than the Bigma.

I find myself using the FA*300 f4.5 and cropping more often than I use the 400 5.6 - mainly because of the relative weight and speed.
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