December 22, 2014, 04:29:01 AM

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Messages - AlanF

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406
Animal Kingdom / Re: First real attempt at taking some bird pictures
« on: March 05, 2014, 02:43:43 PM »
Wesley
Are they the full images reduced to 1024x683 or are they crops?

407
Animal Kingdom / Re: BIRD IN FLIGHT ONLY -- share your BIF photos here
« on: March 05, 2014, 09:59:02 AM »
wow, after seeing these I might have to investigate the tamron a little more.

I like the first one, sparrowhawk 1455.

here's a couple more BIF (barely) the eagles were having a huge feud over some fish heads, the adults would gang up and chase off the juvies, and then turn on each other for the prime chunks.

Nice ones, Logan. Here is the one you want close to the highest resolution CR allows to upload.

408
The Tammy does not come with a case. Wex photographic sent as a freebie a Canon 300EG gadget bag when I bought a 70D from them. This bag fits the Tamron 150-600 perfectly! (Not with the camera attached).

I have posted some photos in the BIRDS IN FLIGHT thread. They were taken by chance as I was carrying the lens and 5DIII on a journey to my lab when I noticed an aerial dog fight. The lens locked on quite quickly to the two very distant birds high in a clear blue sky.

409
Animal Kingdom / Re: BIRD IN FLIGHT ONLY -- share your BIF photos here
« on: March 05, 2014, 05:01:10 AM »
Hi Alan, could you post the uncropped 1455? I think it might make a neat desktop background if the saturation was tuned up on the blue a bit and the birds were cropped to the upper right 1/3 corner, depending on what the sky is like. I like pictures like that with a big amount of blue sky, most people think its boring but i find the gradient of colour in blue sky very captivating.

Logan
Here are all 4 uncropped but reduced to 1200x800. If you tell me which one you want and what size, I'll either post it or give you a link to download it.
Alan

ps they were circling each other and maneuvering like the Red Baron and his foe in WWI over France.

410
Animal Kingdom / Re: BIRD IN FLIGHT ONLY -- share your BIF photos here
« on: March 04, 2014, 03:48:18 PM »
By chance I cycled to the lab today with my Tamron 150-600 and 5DIII  in my backpack when I saw a dogfight between two birds. I couldn't make out what they were until I downloaded: a female sparrowhawk battling a crow. These are all 100% crops at 600mm, f/6.3, 1/640, iso 640 + 1 2/3 ev. The quality is not bad when you consider how cropped these are.

411
Finally, the Tammy is much better on FF than crop. The Tammy at 600mm on FF has the same reach as a 100-400mm on a crop, but a far better IQ.
Is there a comparison of both lenses (Tammy 150-600 VC & 100-400 L IS) on the same crop sensor camera body (e.g. 60D / 7D / 70D etc)?

Yes, on dxomark.com

http://www.dxomark.com/Lenses/Compare/Side-by-side/Tamron-SP-150-600mm-F-5-63-Di-VC-USD-Model-A011-Canon-on-Canon-EOS-7D-versus-Canon-EF-100-400mm-F45-56L-IS-USM-on-Canon-EOS-7D___1263_619_598_619

dxo rates the Tammy as better than the 100-400mm on the 7D, but the difference is not as great as on the 5DIII.

The various links are in
http://www.dxomark.com/Reviews/Tamron-150-600mm-f5-6.3-Di-VC-USD-Canon-mount-lens-review-New-contender

To get an idea of the loss of resolution on going from FF to crop with the 10-400mm L see

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=113&Camera=453&Sample=0&FLI=7&API=0&LensComp=113&CameraComp=736&SampleComp=0&FLIComp=7&APIComp=1

When I got the 5DIII I noted in CR how much better the 100-400 was on it rather than on the 7D.


412
The-Digital-Picture image quality charts have been most useful. The site is one which we know to be most reliable and objective (thanks Bryan!). A couple of comparisons took me by surprise.

The Tammy is at best at 300mm, where it has negligible CA at f/5.6 and is about as good as the truly excellent Canon f/300 L.

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=929&Camera=453&Sample=0&FLI=2&API=0&LensComp=111&CameraComp=0&FLIComp=0&APIComp=0

The Tammy is really good at 500mm, wide open at f/6.3. In particular, it is sharp at the corners, unlike at 600mm. So, I think for birds in flight, it may be best used at 500mm so if the fast ones are close to the edge they will still be sharp and you get a wider angle for view for capture.

The Tammy at 500mm f/6.3 is as sharp as the Canon 100-400L at 400mm. So you get a 25% boost in reach and 56% more pixels on target with no loss of image quality.

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=929&Camera=453&Sample=0&FLI=2&API=0&LensComp=111&CameraComp=0&FLIComp=0&APIComp=0

Finally, the Tammy is much better on FF than crop. The Tammy at 600mm on FF has the same reach as a 100-400mm on a crop, but a far better IQ.

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=929&Camera=453&Sample=0&FLI=5&API=0&LensComp=113&CameraComp=736&SampleComp=0&FLIComp=7&APIComp=1

413
Yes, you are reading correctly.  The 100-400 L is slightly better than the 70-200 with extenders at 280 and 400mm, and the  Tamron 150-600 and the 100-400 are within a whisker of each other. Canon TCs are overpriced. 

The Canon TCs won't fit on to the Tammy so I couldn't test it.  But, I would guess that the Kenko etc ones will give terrible IQ and AF. 

414
Third Party Manufacturers / Re: In-Depth Review: Tamron 150-600 f/5-6.3 VC
« on: February 27, 2014, 02:14:43 PM »
The Digital Picture has posted their initial test results.

http://www.the-digital-picture.com/News/News-Post.aspx?News=9162

I have posted a series of links to different comparisons in the "Shallow review" thread

415
Tammy @ 600mm f/6.3 vs Canon 600mm L IS f/4

This is even more remarkable, the Tammy at its "soft" f/6.3 is sharper in the centre than the redoubtable Canon at f/4, and not much worse at midframe.

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=929&Camera=453&Sample=0&FLI=5&API=0&LensComp=336&CameraComp=0&FLIComp=0&APIComp=0

417
A comparison of the Tammy vs Canons at a variety of focal lengths and lenses.

Tamron @150 f/5 vs Canon 100-400 @150 f/5

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=929&Camera=453&Sample=0&FLI=0&API=0&LensComp=113&CameraComp=453&SampleComp=0&FLIComp=2&APIComp=0

Tammy sharper, especially at edges

Tamron @300 f/5.6 vs Canon 100-400 @300 f/5.6

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=929&Camera=453&Sample=0&FLI=2&API=0&LensComp=113&CameraComp=453&SampleComp=0&FLIComp=5&APIComp=1

Little between them

Tamron @400 f/5.6 vs Canon 100-400 @400 f/5.6

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=929&Camera=453&Sample=0&FLI=3&API=0&LensComp=113&CameraComp=453&SampleComp=0&FLIComp=7&APIComp=0

Little between them

Tamron @300 f/5.6 vs Canon 300mm f/2.8 II @300mm f/2.8

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=929&Camera=453&Sample=0&FLI=2&API=0&LensComp=739&CameraComp=453&SampleComp=0&FLIComp=0&APIComp=0

The world’s sharpest lens wins, but Tammy not bad

Tamron @400 f/5.6 vs Canon 300mm f/2.8 II @420mm f/4

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=929&Camera=453&Sample=0&FLI=3&API=0&LensComp=739&CameraComp=453&SampleComp=0&FLIComp=1&APIComp=0

Canon wins, but not by a knockout


Tamron @600 f/8 vs Canon 300mm f/2.8 II @600mm f/8

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=929&Camera=453&Sample=0&FLI=5&API=2&LensComp=739&CameraComp=453&SampleComp=0&FLIComp=2&APIComp=4

As my own tests showed, the Canon is better but Tammy OK at centre


Tamron @600 f/8 vs Canon 300mm f/4 @600mm f/8

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=929&Camera=453&Sample=0&FLI=5&API=2&LensComp=111&CameraComp=453&SampleComp=0&FLIComp=4&APIComp=0

Tammy wins hands down against the smaller Canon

Tamron @600 f/8 vs Canon 200-400mm f/4 @560mm f/8

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=929&Camera=453&Sample=0&FLI=5&API=2&LensComp=764&CameraComp=453&SampleComp=0&FLIComp=5&APIComp=3

Not much in it at the centre versus one of the great lenses in Canon's repertoire.

It all goes to show that the Tammy is as good as the 100-400 L up to 400mm, and a respectable 600mm thrown in.

418
Third Party Manufacturers / Re: In-Depth Review: Tamron 150-600 f/5-6.3 VC
« on: February 26, 2014, 11:22:06 PM »
My experience is that the Canon 300mm f/2.8 II 4 stop IS is much, much better in mode 1 at freezing movement than is the Tammy. The shutter lag of the Tammy is, accordingly, less bothering, and I have found it negligible for big birds in flight.  I use mode 3 for the Canon. At 600mm, I need 1/2000 for the Tammy without IS or VC for it to be absolutely sharp 100% of the time.

And what shutter speed do you prefer for the Canon with 2X TC in mode 3, for BIF?  1/1000?  I've found that's not fast enough for small birds, but I guess that's not saying anything that's not obvious.

Small birds are usually too fast for me at 600mm. Hovering birds of prey or lumbering heavyweights are what I can manage.  And even for them the faster the better. 

419
Third Party Manufacturers / Re: In-Depth Review: Tamron 150-600 f/5-6.3 VC
« on: February 26, 2014, 06:05:22 PM »
My experience is that the Canon 300mm f/2.8 II 4 stop IS is much, much better in mode 1 at freezing movement than is the Tammy. The shutter lag of the Tammy is, accordingly, less bothering, and I have found it negligible for big birds in flight.  I use mode 3 for the Canon. At 600mm, I need 1/2000 for the Tammy without IS or VC for it to be absolutely sharp 100% of the time.   

420
Like resale value, we have to keep this "build-quality" issue in perspective. A lens that could take repeated falls off two-story buildings would be great, but not if it requires two sherpas to lug it around for you. For my purposes, traveling solo with minimum kit either on foot or motorbike, durability must be balanced against size and weight. After seeing the images posted on this thread, I'm convinced the Tammy's IQ is more than adequate for my needs. I think we can all agree that the price is an exceptional value. And now with wickidwombat's comparing the build-quality to that of the Canon 100L--a lens I own, love and have carried over hill and dale without a hitch--I'm convinced that the Tammy has the right IQ, AF, size, weight and build-quality to go ahead and place my order. I'll keep it tethered to me, as AlanF and I discussed in this thread, but expect it to last through many a trip.

Thanks to the early adopters who bought this lens and shared their experiences here!

But what about weather sealing?  I didn't think the Tamron had it.  If it doesn't, and you guys are talking about buying one to carry off into the bush...then I wonder if the weather sealing argument others have for other lenses, is just an excuse to argue?  Not saying it's not nice to have, but how is it ok for this Tamron to not have it, but not ok for the Sigma 35mm f/1.4 "art" to not have it?q

Anyway, if there's info somewhere that there actually is weather sealing, I don't see it.

It's moisture resistant - http://www.tamron.eu/uk/lenses/overview/single/product/sp-150-600mm-f5-63-vc-usd-8.html?tx_keproducts_pi6[cam]=&tx_keproducts_pi6[vc]=false&tx_keproducts_pi6[sp]=false

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