April 18, 2014, 12:28:02 AM

Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - AlanF

Pages: 1 ... 3 4 [5] 6 7 ... 57
61
Lenses / Re: Canon 600mm f4 IS II Vs Canon 200-400mm w/1.4x TC
« on: March 09, 2014, 06:35:57 AM »
The point I am making is that I believe the 2 canons are the best but the tamron is very close behind and will give you undiferentiaded results under most conditions so anyone on a budget should take a good look at it.

Anyone on a budget doesn't have a choice but to choose the Tamron.  Someone with (truly) the budget, is going to pick the Canon (nine times out of 10).

In that case I must be in a minority of 1 out 10.  If you have the strength and like using monopods or tripods then go for the Canons if you have the cash - you will get the ultimate quality. But, if you want to use hand held and like a light package for hiking and birds in flight etc, then those great lenses are just too heavy.  I could not handle them.  I would rush out and buy a Canon 200-500 f/5.6 that beats the Tamron, and pay the price.

62
Lenses / Re: Canon 600mm f4 IS II Vs Canon 200-400mm w/1.4x TC
« on: March 08, 2014, 01:16:42 PM »
The point I am making is that I believe the 2 canons are the best but the tamron is very close behind and will give you undiferentiaded results under most conditions so anyone on a budget should take a good look at it.
You can also check this:

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=929&Camera=453&Sample=0&FLI=5&API=2&LensComp=113&CameraComp=453&SampleComp=0&FLIComp=10&APIComp=2

Even a 100-400 L with the 1.4III extender is comparable with Tamron (just a little worse at the center but better at mid-frame and edges...)


I have tried the 100-400 with a 1.4x TC. The AF was awful. FoCal would not AFMA with it either.

63
Lenses / Re: Canon 600mm f4 IS II Vs Canon 200-400mm w/1.4x TC
« on: March 08, 2014, 01:26:24 AM »
If Canon makes a 100-400 II for a reasonable price that significantly outperforms the  Tamron, it could also put the skids under the 200-400.

65
Animal Kingdom / Re: First real attempt at taking some bird pictures
« on: March 07, 2014, 04:47:09 PM »
Northstar
What app did you use on your iPad?

66
Lenses / Re: Review: Tamron 150-600 f/5-6.3 Di VC USD
« on: March 07, 2014, 04:43:55 PM »
Hi everybody

and here


I thought this review was over the top and somewhat uncritical.

67
Lenses / Re: Review: Tamron 150-600 f/5-6.3 Di VC USD
« on: March 06, 2014, 10:45:46 AM »
I sure wish someone would test this thing on a high-pixel-density sensor like the 7D or 70D, instead of the full-frame cameras.
It has been done by dxomark.  It has links to it on lots of bodies, which you can find.  Basically, it is significantly better than the 100-400 on FF and slightly better on crop.  The lens is much better on FF.

68
Lenses / Re: Review: Tamron 150-600 f/5-6.3 Di VC USD
« on: March 06, 2014, 08:35:45 AM »
The Tamron seems to be a very good deal if you want the flexibility. If you shoot birds or wildlife in the center of the frame, you can also buy it for reach. If however you need the reach AND a good corner performance, you are far better off with the EF 5.6 400 L + 1.4x Extender:

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=929&Camera=453&Sample=0&FLI=5&API=2&LensComp=278&CameraComp=453&SampleComp=0&FLIComp=3&APIComp=1

Look at the corner sharpness of the 400 L + 1.4!

For those  who already own the extender, the 400 L alone is about the same investment as the 150-600.


The Canon 400 f/5.6 L is remarkably good with the extender. Even more remarkable is that the Tamron at 400mm and f/5.6 is hardly worse than the 400 prime.

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=929&Camera=453&Sample=0&FLI=3&API=0&LensComp=278&CameraComp=453&SampleComp=0&FLIComp=0&APIComp=0

69
Lenses / Re: Review: Tamron 150-600 f/5-6.3 Di VC USD
« on: March 06, 2014, 06:28:34 AM »
Plainsman, you are right. He measured at only 10 meters. Lensrentals measured at longer distances and found close to 600mm. In general, the review is done with Bryan’s usual thoroughness and is in broad agreement with the lengthy CR review threads.  He does say that Tamron could have stopped at 500mm and not continued to 600mm, as the 500mm rezzed up would be as good. I take issue with this point, and use his own data to explain why.

He is right that the Tammy is excellent at 500mm.  Wide open its centre holds up well against the incredible 500mm L f/4 II, and stopping down to f/8 improves the corners – see:

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=929&Camera=453&Sample=0&FLI=4&API=2&LensComp=745&CameraComp=453&SampleComp=0&FLIComp=0&APIComp=0

The lens at 600mm is best used at f/8.  The corners at 600mm are soft, but the centre is very good. There is a significant improvement of the corners at f/11.

However, the centre at 600mm and f/8 is similar to 500mm and f/8, though the corners are much worse – see:

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

So rezzing up the centre at 500mm won't be as good as using the true 600mm image.

The centre at 600mm and f/8 holds up well against very expensive opposition For example, the centre at 600mm and f/8 is similar to the Canon megabuck 200-400 L at 560mm at f/5.6 – see:

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

The centre at 600mm and f/8 is similar to the 300 f/2.8 II + 2xTC III at 600mm at f/5.6 - see

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=2

(which is my other combination for 600mm hand held portability). The centre at 600mm is pretty respectable.

So, if you want the whole frame to be sharp or you are taking birds in flight and tracking them, and they also wander from the centre, it is better to use 500mm. But, if you are shooting small subjects far away and you can locate them in the centre, you get 44% more sharp pixels on the image, and 600mm is worthwhile. I think Tamron did the right thing by including 600mm.

70
Animal Kingdom / Re: First real attempt at taking some bird pictures
« on: March 05, 2014, 03:56:39 PM »
Wesley
Are they the full images reduced to 1024x683 or are they crops?

Hi Alan,
  I did crop the images a bit to correct for framing, but I also reduced them to 1024x??? so I could post them.

-w

The first couple are nicely composed, with the bird about 1/3rd in from the left. The last two are not, with the bird straddling the picture - it would have been better to have the bird on the left with some open space on the right. They are also rather noisy - the EXIF says that you were at iso1600 which is rather high for a Rebel. With relatively static subjects and short focal lengths of 200-280mm you would have done better to use slower shutter speeds and have some room for sharpening with a lower iso and less noise.

71
The-digital-picture has now posted the full review
http://www.the-digital-picture.com/Reviews/Tamron-150-600mm-f-5-6.3-Di-VC-USD-Lens.aspx

It has basically what we know from our own discussions, but done rather well. Bryan does suggest that you would do better by using the lens at 500mm and rezzing up to 600mm rather than using it at 600mm directly. The Tammy is indeed really good across the whole frame at 500mm. My conclusions looking at his own data

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

is that if you are using just the centre then 600mm is advantageous but if you need the whole frame or are photographing birds in flight where it is difficult to keep them in the centre, 500mm is better, especially as it gives a wider field of view.


72
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?

73
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.

74
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.

75
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.

Pages: 1 ... 3 4 [5] 6 7 ... 57