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08-28-2008, 04:30 AM   #1
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Lenses Purchase Help Needed

I've had my kit lenses with a Pentax 10D and the Tamron AF 18-250mm lenses for well over a year now I think it is, and I'm wanting to get a new lenses as the financee and I are heading to Churchill/Canada and doing a Tundra Buggy Polar Bear experience which should be absolutely amazing and I want to ensure I get good shots there with a good lenses.

I've been looking at two Sigma lenses which are of a similar price:

APO 100-300mm F4 EX DG HSM Dirt Cheap Stores

APO 50-500mm F4-6.3 EX DG HSM Dirt Cheap Stores

I'm concerned though about the ability to handhold both these lenses, especially in the conditions we're going into.

Reading a review here (Shutterbug: Truckin’ On A Tundra Buggy) from a professional photographer who did the same tour he says:

QuoteQuote:
I took most of my pictures with my Canon EOS-1D Mark II using my Canon 100-400mm IS (Image Stabilization) zoom lens or my Canon 400mm DO (Diffractive Optics) IS lens. Like some of my fellow photographers, I used a beanbag to help steady my camera on an open window; a few of the other photographers used window mounts for steady shots. On a few occasions, such as when I was photographing arctic hares, I used my 1.4x or 2x Canon tele-converter on my long lenses for even tighter close-ups. For my near-to-the-Buggy shots, I photographed with my Canon 17-40mm zoom.
Does anyone have any suggestions on what would be good purchase for the sort of thing I'll be doing?

Many thanks

08-28-2008, 04:47 AM   #2
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Are you choosing between one or the other of these lenses? If so, I would go with the 50-500. Why, because with the Tamron 18-250, you would be repeating about 90% of the same focal lengths with the 100-300. Also, another option is to get a 1.5x adapter, use it with your existing lens and take that 250 up even further....while saving you some cash.

As far as steadying your shots out of a car window...a small beanbag does work, as will a Gorillapod (if you have something there to wrap it around).

Cool Tool: Gorillapod <- Gorillapod link

Good luck!

Jason
08-28-2008, 04:31 PM   #3
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Thanks for the comments Jasvox

I'm considering getting one of these, but if anyone has any other good suggestions, that would be good too.

What concerns me is that with the 50-500 lenses, I'll need support the whole time won't I in terms of a tri/mono pod, or beanbag won't I? That obviously makes the lenses very difficult to travel with.

Would that Gorillapod actually hold the weight of the K10D and the lenses? Doesn't look very sturdy?
08-29-2008, 06:13 AM   #4
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i think in terms of IQ and weight, the Sigma 100-300 kills the 50-500. it's just do you need th reach?
those sigma lenses are so heavy that i wouldn't trust the gorlliapod to hold them up

08-29-2008, 06:23 AM   #5
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I should clarify the suggestion of the gorillapod to be used with the Tamron....the size and weight with the Sigma would be too risky. I am not 100% sure, but I think they make those gorillapods in different sizes/strengths.

Oh well, just an idea.

Jason
08-29-2008, 04:00 PM   #6
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QuoteOriginally posted by k100d Quote
i think in terms of IQ and weight, the Sigma 100-300 kills the 50-500.
What do you base that on out of interest? Do you have an article you've read or....?

QuoteOriginally posted by k100d Quote
it's just do you need th reach?
I'm really looking for a decent x to 400mm lenses, but I can't seem to locate one, and thus have been left with a choice between the 100-300 or 50-500. Any suggestions there?

QuoteOriginally posted by Jasvox Quote
I should clarify the suggestion of the gorillapod to be used with the Tamron....the size and weight with the Sigma would be too risky. I am not 100% sure, but I think they make those gorillapods in different sizes/strengths.

Oh well, just an idea.

Jason
Thanks for the suggestion anyway Jason. I went onto their website, and the weight of the camera body and lenses is still below the max weight but it's very close so I'll give that a miss.
08-30-2008, 07:47 AM   #7
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Damn.. The FA Star 250-600/5.6, is available on that site, just $17,925.05 ;O I just have to order a couple of those..

Heh! I barely knew that lens even existed.

/S
09-04-2008, 07:17 AM   #8
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QuoteOriginally posted by JamesAus Quote


Thanks for the suggestion anyway Jason. I went onto their website, and the weight of the camera body and lenses is still below the max weight but it's very close so I'll give that a miss.
Says it will easily support up to 6lbs...

Joby - Gorillapod SLR-ZOOM

also, check out the bag and steady shot on the popphoto page about thier recommended products
http://www.popphoto.com/americanphotofeatures/5379/editors-choice-2008-tripo...-supports.html

Jason

09-04-2008, 07:20 AM   #9
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check photozone and fredmiranda for lens reviews
the sigma 100-300 is one of their best
09-04-2008, 10:08 PM   #10
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QuoteOriginally posted by Jasvox Quote
Says it will easily support up to 6lbs...

Joby - Gorillapod SLR-ZOOM

also, check out the bag and steady shot on the popphoto page about thier recommended products
Editor's Choice 2008: Tripods and Camera Supports - - PopPhotoJune 2008

Jason
Thanks Jason, the K10D and the Bigma is approaching 3KG and I wouldn't trust it personally. Thanks for the suggestion though.

Thanks for the link to popphoto. Good to see the Kirt Bag gets a good recommendation there.

QuoteOriginally posted by k100d Quote
check photozone and fredmiranda for lens reviews
the sigma 100-300 is one of their best
Will do - cheers
09-04-2008, 10:54 PM   #11
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If I was you .... I'd suggest the 100-300 f/4 ... it is a much better lens.
With the images I have seen from both the 50-500 and the 100-300 ... the latter is the better lens.

The 50-500 is versatile though ... and still is decent quality for what it is too .. it is huge though.

I'd love to get the 100-300 f/4 ... but my finances won't allow it
09-04-2008, 11:02 PM   #12
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The problem with the 100-300 is the zoom range though. The people on the tour have said to bring at least a 400mm camera, so that's what puts me off the 100-300 unfortnately.
09-05-2008, 06:37 AM   #13
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What about the 100-300 and a Promaster 1.7x converter?
09-05-2008, 07:02 AM   #14
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pair up the sigma lens with a sigma TC
did those people mean "400mm equivalent"? if so, the 100-300 will fit the bill :P
09-05-2008, 07:06 AM   #15
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QuoteOriginally posted by pingflood Quote
What about the 100-300 and a Promaster 1.7x converter?
Don't have any experience with tele-converters. I presume it does affect the quality of the image produced?

QuoteOriginally posted by k100d Quote
pair up the sigma lens with a sigma TC
did those people mean "400mm equivalent"? if so, the 100-300 will fit the bill :P
No idea actually. What is probably a stupid question but how does a 100-300mm lenses equal a 400mm lenses?
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