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Messages - jthomson

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Lenses / Re: Why Does the 100-400L Sell So Well Still ?
« on: June 06, 2013, 11:20:33 AM »
The 100-400mm L sells well because it and the 400 mm f5.L are the only  semi-affordable 400mm  lenses with decent image quality.   The 100-400mm L sells better than the 400mm f5.6L because the zoom is more versatile than the prime.

The 70-300mm L doesn't sell as well because it is overpriced.  You don't need to spend  $1400 to get a 70-300mm lens. Canon makes a non-L 70-300mm that many people get as their first long telephoto and Tamron makes a 70-300mm  that is  both less expensive and better than the Canon Non-L.  If you have either of these lenses  and you want to upgrade, then you will most probably pick one of the 400mm's  to get the better image quality and the extra 100mm  than   for  the 70-300mm L that has only a small improvement in image quality.

This will probably change when Canon finally upgades the 100-400mm.  I would expect that the price will go up to around $3500 and then the 70-300mm L  will look more attractive. 


Reviews / Re: what utter crap this is.... samyang 24mm TS
« on: June 03, 2013, 05:56:07 PM »
Well I bought the lens and am quite happy with it.  It makes the verticals vertical, and generally I need it to be at f8 to f11 to get a large DOF.
I'm frequently photographing structures like below in poor light conditions.  The Samyang works just fine.
The data on Lensrentals clearly  show that at f11 and above the resolution of the Samyang is equal to the Canon.  Yes it would be nice if it was better  below f8, but why make such a big deal about it? Its not the first lens that needs to be stopped down to get decent resolution, and it won't be the last. 

Lenses / Re: Do you wish your 70-200L were black?
« on: May 22, 2013, 05:50:50 PM »
The relationship between colour and temperature of bodies receiving radiation is not as straightforward as 99% of postings on the net say. Although black absorbs heat better than white, it correspondingly radiates heat better. The inescapable consequence is that black and white bodies reach the same temperature when they are in sunlight but black gets there faster.  Conversely, the black body will cool down faster when taken out of sunlight.  So, the Nikon lens heats up faster than the Canon L, but both eventually reach the same temperature and the Nikon cools down faster.

While not as straight forward as some postings would indicate, the basic fact that a typical flat black object will reach a higher temperature  in the sun that a typical white painted object is correct.  The black traps more of the suns energy, the white reflects it.  That is why things like propane tanks are painted white.  You can verify this yourself on a sunny day.  Put one hand on some ashphalt surface and the other  on same grass alongside it.  The asphalt will be much hotter than the grass, guaranteed.

Lenses / Re: When is the New 100-400 Coming?
« on: May 16, 2013, 05:10:37 PM »

1. (less likely) The release of a new 100-400 will take some time after all because there's no immediate market pressure

2. (more likely) The new 100-400 will be much more expensive, i.e. generating more profit for Canon, and will be an "upgrade" to the existing lens rather than a replacement on the same level - more like 24-70 mk1 to mk2.

1. There is no market pressure, nobody makes a better lens in the size/price range.  That's why Canon hasn't changed the 100-400mm and the 400mm f5.6.

2.  New price will be similar to Nikon 80-400mm, probably something like $500 more.

Lenses / Re: Poll: Most Wanted New Lenses of 2013.
« on: May 16, 2013, 05:00:57 PM »
Voted for the 400mm F4. I think this is very potential lens now they have the glass and parts for the 200-400 which it could share a lot of. Just a simple matter of a few adjustment and voila! Although I'm not so sure this would fit into my reasonable big white price thinking of £4500-£5000 judging on the price of the 200-400.

I think your price is in the right ball park.  The cost should be slightly lower than the 300mm f2.8L USM II IS.

Canon General / Re: Announcement: Canon EF 200-400 f/4L IS 1.4x
« on: May 14, 2013, 12:11:45 PM »
I've been hoping that the rumoured price was wrong.
Nikon's 200-400 is less expensive than their 500mm f4. 
I was hoping Canon's price structure  would be similar.

I like the concept of the 200-400mm 1.4x, but not at the price. 
When i get a big white it wil either be the 500mm f4 or the 300mm f2.8 with the 2xIIIl

Lenses / Re: Poll: Most Wanted New Lenses of 2013.
« on: May 07, 2013, 11:49:33 AM »
100-400 f4-5.6 IS II

400 5.6 IS

Give us telephoto goodness for the masses!

The masses aren't likely to have the $3,000+  needed to get the telephoto goodnes you are proposing.  :(

Lenses / Re: New Tilt-Shift Lenses in the Wild [CR2]
« on: May 02, 2013, 11:41:19 AM »
Insightful post, PBD...but you're missing the big picture.  It's not just a 'because we can' moment - it's one more small step on the road to the EF TS 12-400mm f/2L Macro IS Pancake lens we all want.

Will it take extenders and focus at f8 ?   ;D

Canon General / Re: the rebate program... what a sham!
« on: April 24, 2013, 05:48:38 PM »
I bought  a 1.4x III from B&H under the rebate program. 
Definitely savings from the price before the rebate.
Not a  $50 dollar savings  as there price was already less than the MSRP, but check the cart,
$499- $50 rebate  = $429
They certainly have passed on savings over and above the rebate.

If you don't like the price  don't buy.

Reviews / Re: 7D2 or 5D3?
« on: April 12, 2013, 04:11:15 PM »
I was shooting with the T1i which I believe has  the same sensor as your 50D. The 400mm f5.6 is my usual lens.
I restricted my ISO to 800 and did som noise reduction in post.

I got tired of waiting for the 7D II and got a 5D3 just before christmas.  I now typicaly shot with  the 400mm f5.6 and the Kenko 300 DGX 1.4x  and go up to ISO 3200, typically without needing noise reduction.

Reviews / Re: Review - Sigma 35mm f/1.4 DG HSM
« on: April 12, 2013, 11:58:59 AM »
Hope Sigma updates their 50mm 1.4 to the same standard.
Sigma's on a bit of a roll i got a 30mm for my m4/3 camera last year that is really good.

I'm curious...what is disturbing about the way the results are presented?  Are you equally 'disturbed' by their presentation of the results that show 14.4 stops of DR for the D800?  ::)

What disturbs me is the lack of apples to apples comparisons.  It would have been good if they had at least given some comparisons of the two camera's with the same lens.  If I'm reading the data correctly the Canon 5D3 with the Sigma 85 f1.4 has the same DxO score as the D800 with the same lens.  The data give the sharpness of the Canon combo in their top ten, but not the sharpness of the Nikon Combo.  Does this mean the Canon combo is sharper that the nikon combo or did they just not test the nikon combo.  All their top ten sharpness combo's tell me is that the Canon 300mm f2.8L is one great piece of glass.   

It would also have been informative if they had tested some of the nikon lenses on Canon bodies.  What happens with a nikkor 85mm f1.4 G on a 5D3. 

EOS Bodies / Re: 5D Mk III Firmware, any news?
« on: April 02, 2013, 02:31:43 PM »
Well let's hope they keep interest in making the 5D MK3 capable of focusing at f8, that's my main interest right now

Focuses just fine at f8 with a 400mm f5.6 and a Kenko 300 DGX 1.4

No need to wait.

Pricewatch Deals / Re: Nik Collection Bundle for $126.65
« on: March 31, 2013, 05:51:23 PM »
Yes, that is the case.  I got an e-mail from them with a link to download teh SW.  Hopefully they have fixed the link by now since it was missing the .exe extension.  Once you stick that on there it works just fine.

Thanks, I was wondering how to get it to install after digging the link out of my spam folder.

Guess Google wanted us to work a little for the free upgrade.  ;D

Lenses / Re: What is your favorite lens and why?
« on: March 31, 2013, 12:18:59 PM »
400mm f5.6L Great lens for birding.

I also really like the 200mm f2.8L, fast, sharp and lightweight.

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