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03-07-2013, 02:28 PM   #121
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I think more to note on that Sanderling shot is the contrast, the typical "loss of contrast" when using TC's is not even present in that shot.

03-07-2013, 02:29 PM   #122
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Just posted another pic with 2x TC taken from a monopod in my gallery https://www.pentaxforums.com/gallery/images/4141/large/1_IMGP0329n.jpg and another with both https://www.pentaxforums.com/gallery/images/4141/1_IMGP9059n.JPG
For those of you who can cope with manual focussing my secret tip is the 400/5.6 645 EDIF, weighs just over 1 kg, cost me less than $1000 used and is incredibly sharp. Will post something in my gallery right away!
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Last edited by angus; 03-07-2013 at 02:31 PM. Reason: added link
03-07-2013, 02:35 PM   #123
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Done it - another Sanderling in not so good light from last weekend https://www.pentaxforums.com/gallery/images/4141/1_IMGP0980n.jpg - I saw this lens in ebay for 1300$ this week...

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03-07-2013, 02:41 PM   #124
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QuoteOriginally posted by joe.penn Quote
I think more to note on that Sanderling shot is the contrast, the typical "loss of contrast" when using TC's is not even present in that shot.
That`s true but I have that particulair TC so I guess I`m used to that

03-07-2013, 03:38 PM   #125
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Thank you angus for the info and pics with the Sigma 300 2.8 + TC's. I think you came to the rescue in way as a few of were wondering about considering that combination.


Beautiful shots!
03-08-2013, 04:55 AM   #126
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Maybe a stupid question but how does stacking 2 TC`s work? Do you get 300mm x 3.4 (1020mm) or does the second TC multiplies the mm`s of the first combo (840mm)?
03-08-2013, 05:17 AM   #127
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And don't forget all these with e 300/+1.4 tc...

https://www.pentaxforums.com/forums/post-your-photos/176833-sports-few-quicks...rfing-pro.html

https://www.pentaxforums.com/forums/post-your-photos/177642-sports-more-quick...new-3-3-a.html

https://www.pentaxforums.com/forums/post-your-photos/177740-sports-final-day-...2-50-pics.html


https://www.pentaxforums.com/forums/post-your-photos/177639-misc-her-watch-6-minutes-fast.html

Oh and this was taken with the 300 + stacked 2x and 1.4x Sigms TC's , tacking a bird inflight with AF-C - 7fps, at 840mm hand held, pic is a 50% crop of the Jepg straight out of the camera, cropped and resized in "Paint" (I don't post hi-res or PP raw photos online)

03-08-2013, 06:27 AM   #128
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QuoteOriginally posted by TenZ.NL Quote
Maybe a stupid question but how does stacking 2 TC`s work? Do you get 300mm x 3.4 (1020mm) or does the second TC multiplies the mm`s of the first combo (840mm)?
You multiply the focal length and the aperture for each TC. So a 300mm f/2.8 lens with 1.4X and 2X TC becomes an 840mm f/8 lens.

03-08-2013, 10:04 AM   #129
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QuoteOriginally posted by cmohr Quote
And don't forget all these with e 300/+1.4 tc...

https://www.pentaxforums.com/forums/post-your-photos/176833-sports-few-quicks...rfing-pro.html

https://www.pentaxforums.com/forums/post-your-photos/177642-sports-more-quick...new-3-3-a.html

https://www.pentaxforums.com/forums/post-your-photos/177740-sports-final-day-...2-50-pics.html


https://www.pentaxforums.com/forums/post-your-photos/177639-misc-her-watch-6-minutes-fast.html

Oh and this was taken with the 300 + stacked 2x and 1.4x Sigms TC's , tacking a bird inflight with AF-C - 7fps, at 840mm hand held, pic is a 50% crop of the Jepg straight out of the camera, cropped and resized in "Paint" (I don't post hi-res or PP raw photos online)
TFS cmohr, those are impressive shots. Angus made me forget the competition but your shots certainly won me over for the sigma. The detail is awesome.
If all goes as planned either the 300mm F2.8 or the 500mm F4.5 will fill my camerabag in 2 months.


QuoteOriginally posted by audiobomber Quote
You multiply the focal length and the aperture for each TC. So a 300mm f/2.8 lens with 1.4X and 2X TC becomes an 840mm f/8 lens.
Thank you, Audiobomber. Very clear.
03-08-2013, 10:40 AM   #130
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QuoteOriginally posted by TenZ.NL Quote
If all goes as planned either the 300mm F2.8 or the 500mm F4.5 will fill my camerabag in 2 months.
I have the Sigma 300 2.8 in Nikon mount and it is blistering sharp even wide open - I can't wait until the D7100 comes out end of next week to marry this lens too, it's already extremely sharp and with the D7100 not having the low pass filter this combination may turn out to be an incredible combination.
03-08-2013, 11:08 AM   #131
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QuoteOriginally posted by joe.penn Quote
I have the Sigma 300 2.8 in Nikon mount and it is blistering sharp even wide open - I can't wait until the D7100 comes out end of next week to marry this lens too, it's already extremely sharp and with the D7100 not having the low pass filter this combination may turn out to be an incredible combination.
I'm really looking forward to your results also.
03-08-2013, 12:01 PM   #132
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QuoteOriginally posted by joe.penn Quote
I have the Sigma 300 2.8 in Nikon mount and it is blistering sharp even wide open - I can't wait until the D7100 comes out end of next week to marry this lens too, it's already extremely sharp and with the D7100 not having the low pass filter this combination may turn out to be an incredible combination.
QuoteOriginally posted by stormtech Quote
I'm really looking forward to your results also.
Yes, defenately...the siggy 300 F2.8 is rather hard to find overhere (and if it`s in stock the price is way overrated) so a D7100 might be plan B.
03-08-2013, 06:16 PM   #133
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Since @angus is throwing out other options, here is a shot with the 6x4 Takumar 400mm f4 + SMC A 1.4xL rear converter for a 560mm f5.6 combo. This lens is sharp too and is definately on the cheap end of the spectrum but its big and you lose a lot of the in-camera capabilities with a lens from a different format. Really I just want to confuse the OP by suggesting other options that he perhaps hasn't thought of
03-21-2013, 04:50 PM   #134
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BTW, nice photos in the previouys posts ... thanks for sharing.

So, here it goes:

Just purchased a Siggy 150-500 (used - on the marketplace) because the funds were not available as expected.
In a nutshell: no Siggy 300/2.8 for now nor a Siggy 500/4.5 for at least quite a few months.

Then I keep reading that the "Bigma" has better IQ than the 150-500.
On the other hand, I see pics taken with the 150-500 which are, at least according to my "vision", rather pleasing in colour and IQ.

Time will tell whether this will be my workhorse for the next little while or will I revert to the DA*300/4 with a 1.7X TC (adapter).

I am quite confident that this should do fine in consideration of the budget.

I will certainly start posting comparative shots of the 150-500 vs. DA*300/4 + 1.7x TC soon.

According to several "reviews and tests", including this one from Sigma:
http://blog.sigmaphoto.com/2011/the-50-500mm-vs-150-500mm-shootout-and-telep...E2%80%99toole/
this lens seems to be sharper at the long end, hardly more than the 50-500 though.
And the list of reviews goes on forever, so I suppose that the best way to come to any formal conclusion is to test it, use it, take lots of "real world" photos (no charts ... plain old "ordinary" images) and see for myself.

Cheers to all!

JP
03-21-2013, 05:03 PM   #135
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Thanks for following through and letting us know your decision JP - so many people don't do that!

I think you found a viable solution for now. I've seen pics and the review from the lens that you bought and feel you should have yourself a very good copy.

As with any new long lens, give yourself plenty of time and patience to learn the lens. I know that even when I first started using a 300mm lens it took quite a while until I got results that I was satisfied with.

On a side note, I have a 50-500 on the way to me right now - to borrow - from a friend who is going on vacation and was very kind in loaning it to me while he is gone so I can see how I will get along with it. I wish I had this opportunity for every lens I was thinking of buying!
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