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11-30-2013, 02:48 PM - 1 Like   #16
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Use whatever @TenZ.NL recommends, seriously
https://www.pentaxforums.com/forums/122-lens-clubs/55946-300mm-plus-lens-club...ml#post2573691

11-30-2013, 02:54 PM - 1 Like   #17
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Hopefully the longawaited Pentax converter will be available at the beginning of 2014, so the best option for me is DA*300 and use of 1,4 RC if reach is not enough
11-30-2013, 03:11 PM   #18
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QuoteOriginally posted by TenZ.NL Quote
Try to find a sigma 100-300 F4 APO EX DG. It also takes the sigma 1.4 EX teleconverter which makes it a 140-420mm F5.6. That combo makes a very flexible and reasonably fast set for safari`s and has great IQ.
It`s too bad that your K30 doesn`t allow a batterygrip, the balance would be better.
can't seem to locate the 100-300 mm lens for Pentax. Is the 70-300 equally as good and can it be used with the TC? Thanks
11-30-2013, 03:18 PM   #19
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QuoteOriginally posted by audiodoc Quote
can't seem to locate the 100-300 mm lens for Pentax. Is the 70-300 equally as good and can it be used with the TC? Thanks
The 70-300 is no where near the quality of the 100-300 F4, which I believe is discontinued now so hard to find.
Check eBay or put out a request in the Wanted section of the marketplace.

11-30-2013, 03:19 PM   #20
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QuoteOriginally posted by crewl1 Quote
The 70-300 is no where near the quality of the 100-300 F4, which I believe is discontinued now so hard to find.
Check eBay or put out a request in the Wanted section of the marketplace.
thanks Crewl.. I did check on ebay, nada. I'll keep checking the marketplace, great idea ;-)
11-30-2013, 03:36 PM   #21
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QuoteOriginally posted by audiodoc Quote
thanks Crewl.. I did check on ebay, nada. I'll keep checking the marketplace, great idea ;-)
This is the one you are looking for. Sigma APO 100-300mm F4 EX DG Lens Reviews - Sigma Lenses - Pentax Lens Review Database
11-30-2013, 05:11 PM   #22
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QuoteOriginally posted by crewl1 Quote
looks impossible to find for pentax mount ;-(
11-30-2013, 05:15 PM   #23
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QuoteOriginally posted by audiodoc Quote
looks impossible to find for pentax mount ;-(
Not impossible but you have to be patient. Set up a watch list on the marketplace. There have been 2 maybe 3 for sale over the last 4 months or so.

11-30-2013, 05:17 PM   #24
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QuoteOriginally posted by jatrax Quote
Not impossible but you have to be patient. Set up a watch list on the marketplace. There have been 2 maybe 3 for sale over the last 4 months or so.
thanks, I just did that, I think. Not familiar with how the marketplace works. Appreciate all the help
11-30-2013, 05:32 PM   #25
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QuoteOriginally posted by audiodoc Quote
thanks, I just did that, I think.
If you have it set correctly you will get an email when someone posts a listing with your keywords. But when you get the email act quick as scarce lenses get snapped up in minutes sometimes.
12-01-2013, 03:16 AM   #26
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QuoteOriginally posted by audiodoc Quote
Thanks, I already own and used on my last safari the Sigma 28-300... would the 55-300 be different enough to worry about? Don't need 2 lenses that similar.
No, I wouldn't think there's that much of a difference between them.

The DA*300 might be sufficiently good to give you a real cropping advantage, and it would definitely give you the option of a teleconverter. Since you don't seem to use the rest of the zoom range anyway, that actually might be a good option for you.
12-03-2013, 04:49 PM   #27
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I vote for the 50-500mm os ,and use it with a Monopod. It will give very good results
12-06-2013, 12:48 PM   #28
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It seems a key question you need to decide is whether you only intend shooting birds, or also other things and landscapes as well. If only birds, then Sigma 100-300+TC or DA*300+TC or Sigma 500 f/4.5 would be best IQ.

IMO, it would seem to me the logical option for a one lens solution with reach well beyond 300mm on safari would be the Sigma 50-500mm. This give you a wide FL range for animals and birds, and good but not excellent IQ. If you were happy with the 28-300mm IQ, then the 50-500 at the long end will be a big improvement. When walking you won't get close to animals, but you still might be overkill if you only have 200-500mm FL range. If you also do a vehicle safari, you might wish you had wider than 50mm.

Must also agree with others that recommended good super-zoom bridge camera. Perhaps as a backup and for the wider angles...especially if you go with only >300mm.

Last edited by KevinR; 12-07-2013 at 12:14 PM.
12-07-2013, 03:02 AM   #29
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QuoteOriginally posted by audiodoc Quote
looks impossible to find for pentax mount ;-(
Here is one available if you're still looking for.....
12-07-2013, 11:48 AM   #30
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QuoteOriginally posted by sivagriva Quote
Here is one available if you're still looking for.....

That`s more than the newprice...I`ve seen them go for 650-700 2nd hand.
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