November 26, 2014, 07:32:07 PM

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Messages - Sporgon

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196
Lenses / Re: The New Canon EF-S 24mm f/2.8 STM Pancake
« on: September 11, 2014, 11:05:29 AM »
25mm x 1.6x = 40mm

No. It's EF-S so it's 24mm on APS-C. If you put EF 24mm on APS-C, then you will get equivalent around 38mm.

Uh. I'm almost sure that an ef 24 has the same FOV as an ef-s 24. The added "S" just means that it's only mountable to crop bodies.

Depends on what the image circle produced by the lens really is

197
Lenses / Re: The New Canon EF-S 24mm f/2.8 STM Pancake
« on: September 11, 2014, 08:59:22 AM »
Nice lens, but "shame" it is s EF-S

Good excuse to go buy a 7DII  ;)

198
Animal Kingdom / Re: Show your Bird Portraits
« on: September 11, 2014, 08:43:17 AM »
Mr Bean, would you mind letting me know what ISO that image was taken at?
I am going to hazard a guess - Me thinks >= ISO 8000

From a cropping perspective, this is the original, image. I would have used the 1.4x TC but the light was low as it was (1/125 @ f4.5 ISO 400 - using a tripod as a monopod, one leg extended, as I was moving around and no time for the tripod setup).



What a wonderful picture ! I would only crop it to change the composition slightly. Love the bokeh produced by the 300 @ f4.5. Would make a lovely large print on canvas.
Thanks Sporgon, I hadn't thought about the image as a lesser cropped version (with more of the foliage)  :)

Sometimes we don't see the wood for the trees. Or in this case don't see the bokeh for the bird  ;D

199
Animal Kingdom / Re: Show your Bird Portraits
« on: September 11, 2014, 06:44:48 AM »
Mr Bean, would you mind letting me know what ISO that image was taken at?
I am going to hazard a guess - Me thinks >= ISO 8000

From a cropping perspective, this is the original, image. I would have used the 1.4x TC but the light was low as it was (1/125 @ f4.5 ISO 400 - using a tripod as a monopod, one leg extended, as I was moving around and no time for the tripod setup).



What a wonderful picture ! I would only crop it to change the composition slightly. Love the bokeh produced by the 300 @ f4.5. Would make a lovely large print on canvas.

200
Third Party Manufacturers / Re: How do you say Nikon
« on: September 11, 2014, 06:32:15 AM »
Pronunciation of some words in the English language is a strange thing. I mentioned Nikon and Nikkor before but there is also the pronunciation of 'Canon'. Cannon ( things that go boom) is pronounced with a hard (short) 'a' due to the double n, so really Canon should be pronounced with a soft a, like 'Kay non', but it is not, and neither is a church order of canon, which is still pronounced with a hard 'a'.

You can see where Noah Webster was coming from when he tried to change the written English word to be written as it sounded. He pretty much failed, but to this day this is still why the Americans can't spell words like 'rumour'  ;)

201
Third Party Manufacturers / Re: How do you say Nikon
« on: September 11, 2014, 02:11:41 AM »
If you were to pronounce Nikon as an English word it is 'Ny con' because the i is followed by a single k. The i is pronounced soft (long). However the Nikkor lenses have a double k so the i is pronounced hard (short).

202
Photography Technique / Re: Benefits of IS in fast shutter speeds
« on: September 10, 2014, 05:19:20 PM »
This is a strange one because it's effect with faster shutter speeds seem to be random, a little like camera shake itself.
All I can say is that with myself the anecdotal evidence suggests that when hand held my sharpest images that I have achieved with an IS lens is with the IS off. But I can never prove this through testing.

203
Lenses / Re: DXOMark Reviews Zeiss Otus 85mm f/1.4
« on: September 10, 2014, 04:27:16 PM »
Has anyone noticed that the 'true' max apertures as indicate by the Tstop is nowhere near the manufacturers claim? The Zeis is closer to a f1.8 lens than f1.4 and the rest fare no better....

T value is not aperture value, an f1.4 lens is a "true" f1.4 if the apparent aperture diameter is focal length divided by 1.4. The T value relates to actual light transmission and is pretty much irrelevant with TTL metering stills cameras.

Aperture value is always lower than T (transmission) value because however good the glass is you always lose some.

Quite a few of the latest EF lenses do seem to have a T value that is the same as the aperture: the 24-70 IS, 40 pancake, 24/28/35 IS primes. These are all slower lenses but it does look like Canon are achieving a very high light transmission efficiency - you know - to make up for the sensor.........

204
Photography Technique / Re: Travel set up
« on: September 09, 2014, 05:15:58 PM »
Sounds like a fantastic trip, just be sure you start a thread with your pictures when you get back !

I find that what makes a camera like a 5D large and heavy over a long period of time is the lens, which alters the balance of the body significantly even with a good strap.

If there is a lot of hiking and it was me going I think I would certainly want the 70-300L, but to add to this I would take three small primes such as the 50/1.4, the 35IS and the 28/24 IS. and have them in belt mounted Lowepro cases. Or I might even just go 40 pancake and 28/24 IS if I was wanting to keep ultra light. Then add a CF monopod.

Make sure your gear's insured, but it's unlikely any bandits will want it if they read CR.

205
Canon General / Re: Those D'oh moments!
« on: September 09, 2014, 04:52:47 PM »
Mine is the two second timer. I tend to use this for tripod work rather than cable. Unlike leaving mirror lock up on, where at least something happens when you press the shutter, with two second delay nothing happens. So I press a little further. Still nothing. Further still - ah! It fires. So I try again, same sequence. "OMG my shutter release is going the way of a 40D" thinks I. On one occasion a few years ago it never twigged what was causing the problem so I kept working with it like that for the whole session  :-[

206
Does he shoot D800 ? Does he shoot high ISO ?

http://500px.com/JakeOlsonStudios
No.And no.

He shoots almost exclusively iso 100 w/flash (or other light additional source)...

Nice shots. However, not my style.

Flash and reflectors. He also has some wicked processing knowledge, which I think in part is where is amazing boke comes from. He teaches a class...I might take it just to learn his PP techniques.

Why would you pay someone to learn their techniques when he is obviously foolish enough to continue using a camera system that imposes a huge, burdensome requirement to...

...spend a lot of time and use a lot of special techniques and extra tools that add to your total cost to make the photo look good...

His techniques are for portraiture, something I have little skill in but still love. My primary issues are with landscapes, where the use of flash and reflectors during shooting do squat to change the dynamic range of the scene.

And 'squat' is how much flash and / or reflectors have done here - 'cos that's not how he has achieved this look.

207
Anyone using that graph to claiming that mirror less sales are rising is clutching at straws -again. Also a decline in dslr sales appears to be followed by an increase using the same data.

However one thing I have noticed - looking just at the UK market, is that there are a surprising number of high end dslrs for sale used. In the heyday of the 5DII there were very few for sale used, and the odd one that was was priced at nearly the new price less tax. Now I see many used 5DIIIs selling well below the new price, but even more D800s which sell proportionally cheaper still, presumably because the rapid deleting of models reduce their value further.

So there has been some change since 2010/11 times. Whether this is general economic climate or that there is now much more choice I'm not sure.

For myself I still think the dslr is the most flexible, versatile tool.

208
Not sure which version of photoshop you're using, but certainly on CS6 I'm finding that the stitching is as good as, if not better than, PTGui pro.

You're certainly right about the need to still B&B despite the likes of Exmor, just need to write it in really BIG letters.

209
Photography Technique / Re: Manual Focusing
« on: September 08, 2014, 03:22:51 PM »
I have close to 30 years of manual focus experience, before I got my first AF, so that may give me some advantage. After more than a decade with nothing but AF, I have bought a number of manual focus lenses and I am now using them more and more. I use the Ec-S focusing screen on the 1DX and I also tried the Eg-S focusing screen on the 5DIII, which is meant for the 5DII and 6D, but that did not work over time. I am dreaming of a 40MP FF Canon, with 14 stop DR and a good S focusing screen.

With the 1DX and quite a bit of practice, I get (in my view) very high keeper rates. The Otus 55 at f1.4 and the 135 at f2.0 represents challenges though. So if things starts moving, I normally go to higher f-stop numbers. But landscape, stills and portraits are clearly doable, even wide open.

The attached is with the 135 at f2.0 and handheld 1DX and Ec-S

(Unfortunately all my posts have horrible colors, but if you open it, it looks better)

Horse just back from a competition ? Lots of cool clay left on !

210
Lenses / Re: Is there a need for a 50mm?
« on: September 08, 2014, 08:37:02 AM »
so I say get rid of it and consider a good f1.4 lens, but not the Canon 50 which ids also soft until you get to f2.8.

The EF 50/1.4 may not be good on test charts wide open but it can do surprisingly well in practice. This was shot at f1.6, and it's good enough for me, unless you want sharp borders at 1.6, which is a rare requirement.

I really like the 40 STM as a 'walkabout' or landscape lens, but it can't hold a candle to the 50/1.4 for 'event' type work.

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