August 22, 2014, 06:20:16 PM

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Messages - Sporgon

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286
Not sure if this has already been mentioned, but if Sigma are able to give a 24 mm focal length the edge of frame resolution at 1.4-2 that they have achieved in the 35 + 50 Art line ( much more difficult at 24mm I know), then it would actually be a more significant lens to a much larger audience because as the 24mm has a much greater dof, it would be practical to use it at say 2.8 to achieve adequate dof in low light, allowing landscape shooting at lower ISO's and faster shutter speeds in low light, with little vignette.

I think if this was the case we would see a response from Canon in a 24/1.4 III

287
Lenses / Re: A lightwight wildlife lens
« on: April 26, 2014, 03:16:15 AM »
Sounds like the 70-300L was made for your wife  ;)

Incidentally I find taking tc's in and out a pain so the fact the 70-300L doesn't take one doesn't bother me.

288
Canon EF Prime Lenses / Canon EF 28mm f1.8 USM
« on: April 25, 2014, 12:47:18 PM »
I see no one on CR has been brave enough to admit to owning the 28/1.8 let alone posting any shots with it.

A much maligned and misunderstood lens, it's reputation in tatters from the on line review specialists.

Actually it's damn sharp in the broad centre from 2.8 onwards and then gets quite sharp again at the very edges having had a dog's breakfast somewhere in between. Can't match the excellent 28/2.8 IS towards the edge of frame but then it doesn't vignette at f2.8.

289
Third Party Manufacturers / Re: Zeiss Otus Initial Impressions
« on: April 25, 2014, 03:40:08 AM »
I remember reading somewhere that the rings could be due to the grinding/polishing process of the aspherical elements.  According to the TDP link, it looks like the Canon 35 f/2 IS is remarkable in the smoothness of the OOF region.  It might be worth bringing the Otus and S35 to a camera store and comparing it with the 35 f/2 IS.  If the 35 f/2 IS performs notably better than the other two on the same subject then you'd have your answer.

The 35 IS will use moulded elements rather than ground & polished. I wonder if we are seeing an improvement in moulded element technology in that lens. It does seems to aquite itself very well against lenses that are using the much more expensive process.

290
Third Party Manufacturers / Re: FUJIFILM'S latest, X-T1 ?
« on: April 24, 2014, 08:59:11 AM »
One day after making the previous post, the camera store called and said my X-T1 had arrived. I've been playing with it for eight days now (two of which were in pouring rain), using my old Asahi Takumar lenses as my only lenses, i.e. MF all the way. My assessment, seeing that this is a forum dedicated to Canon gear, and you may freely quote me, is simply: "Goodbye Canon."

You were using old bodies ! I think you might have felt differently if you'd had a 6D for instance. I have to say that the 30D was the worst DSLR I ever used in the EOS range; I dont know what Canon altered between that one and the 20D, but the 20 was better for noise in skys etc.

Anyway I hope you enjoy the Fuji. My very first slr was an old Fuji ST 701 so I have a romantic attachment to them, but over time I have come to the conclusion Canon makes the best all-round system.

291

I've never heard of anyone cleaning the AF sensor, dust on it does not show in the images, and is very unlikely to affect exposure, so the risk versus improvement ratio is pretty high.  Same for the sub mirror.

Marsu42 was referring to the AF accuracy.

@ marsu42; you have to raise the mirror to expose the AF module, so I have to do it as per the camera sensor cleaning operation.

Agreed you are blowing dust from one place to another, but on a number of occasions I have had an outer point that seems to have failed altogether. I give the AF module and sensor a good blow with a rocket blower and that outer point that seems to have failed works fine again.

Remember that with zoom lenses that alter their physical length such as the 24-105, 24-70, 70-300, 100-400 etc, their zoom action is constantly pumping air in and out of the camera. Although the weather sealed lenses do have a brush 'seal' around the inner barrel it sure as hell aint a good dust seal after a fair amount of use. So someone who uses these types of lenses a lot are going to get more dust issues than someone who just uses primes, even though they may be changing lenses more. 

A tip for you on focusing on 'naked' horses - I am presuming you are shooting wild ones without any head collars or tack on - try using Servo AF with the centre points expanded, and unless very close have all AF points activated. I know this sounds contrary to 'single shot AF' and centre  point being more accurate, but I have found that when trying to focus an an animal with very flat fur such as a horse, the aformentioned method is much more successful with the 5DII and 6D.

292
Quote
A few have mentioned the 28/1.8. This may not be suitable for your needs; it is very much an 'art' lens ( pinching Sigmas title) and although razor sharp in the centre it really falls off mid frame. Even stopped down to f8 it can't match say the 24-105 mid frame. However if you want to shoot wide angle shallow depth of field, dreamy type shots it is excellent.

While I do agree with you, in my experience, the lack of corner sharpness is much less noticeable when using the 28mm f1.8 with a APS-C sensor.

I agree, it is less noticeable on crop when stopped down a little, but it still does very much effect the edges of the frame, and when compared with lenses such as the 40 or 35IS there is no comparison.

Actually on FF the 28/1.8 does actually recover at the edge of the frame to a much more reasonable level which is quite weird.

I think the 28/1.8 is a great lens to have for specialist, 'creative' types of photography, and is totally misunderstood by the reviewers who do a very good job of making sure it goes nice 'n cheap on the used market  ;)

So as with lenses such as the 70-300 DO the moral of the story is don't buy a new one !

293
Photography Technique / Re: Panning
« on: April 24, 2014, 03:25:57 AM »
I tried some panning shots today. Gear used was 5D Mark III and the 70-200 II. I shot a reasonable number of images today and these are two of the few shots that I liked. The first shot is at ISO 50, 70mm, f/2.8 at 1/50s. The second shot is at ISO 100, 70mm, f/2.8 and 1/60s. The lens was in IS Mode II.
Issues -
1) I wasn't able to generate a more streaking background despite shutter speeds which I thought were reasonably low;
2) Dropping the shutter speed lower resulted in an extremely poor hit rate;
Please suggest as to how can I improve my panning technique.
Thanks in advance,
Regards ... J.R.

Love the second shot !

Can't add anything else to what has been said.

294
While not knowing your financial situation, I can recommend keeping the 40mm.
That sounds like good advice to me. As an aside, some folks in this thread helped me to see that the 40mm is actually very sharp, and I've grown a new appreciation for the lens over the past couple weeks. Forced myself to take it out into the sunlight and take some stopped down shots. Looks great.

Still wanted the 35 IS for indoor use.

Good to hear that you're finding out how good the 40 is. The IS of the 35 plus its excellent sharpness across the frame would make it good for in door - as that it when you do require corner sharpness.

A few have mentioned the 28/1.8. This may not be suitable for your needs; it is very much an 'art' lens ( pinching Sigmas title) and although razor sharp in the centre it really falls off mid frame. Even stopped down to f8 it can't match say the 24-105 mid frame. However if you want to shoot wide angle shallow depth of field, dreamy type shots it is excellent.

295
I also have to experiment with focus priority when doing tracking with the topmost point in portrait mode, no way around it really when tracking a horse running towards you... my problem might be a combination of dirty af array, non-cross point and bad 6d tracking behavior. Good to hear from some people without super powers, now I've much more to go on than before :-)
I wasn't aware the horse was running toward you.... I don't have much success with those types of shots either!  The 6D AF can handle side-to-side movement pretty well, but it definitely struggles with targets moving at anything over slow speed toward the camera.  I'd say my hit rate with those types of shots is pretty low, maybe under 60% depending on the DOF. :-[

+1, if you want to track subjects coming towards you at speed successfully I suggest a trip down to your local professional camera  shop with a thick wad of cash  :(

296
Photography Technique / Re: Slides
« on: April 23, 2014, 05:15:34 PM »
Why not just stay digital?
Ray

When you have a camera of the calibre of a 5DIII you'd be crazy not to. Once you digitise film you lose any advantage of colours anyway.

You can achieve the results you want with digital. If you're doing everything in camera ( which it sounds of it you might be ) work on your 'picture styles' settings in 'neutral'. Bracket your shots one third apart and see which exposure you prefer.  Try using a polarising filter too.

And I'm afraid Kodachrome processing has gone the way of the Dodo. I believe it is possible to development as a black and white negative but that is hardly what you want.

297
@ Marsu42; thanks for your comments. Incidentally don't think that you are alone in struggling with focus on horses. Animal fur is notoriously difficult to focus on, and with horses in particular I have always had trouble focusing with every camera I have used.


298
Canon General / Re: Canon Hong Kong Announcement April 24, 2014
« on: April 23, 2014, 01:07:14 PM »
I am CONVINCED it is 7D2 with a 1d style body with 2 stops ISO improvement, 12 fps and 1dx focus. Larger LCD as well.

You may well know something that I don't, but I'm convinced it won't be. Canon have left a gap in the aps line above the xxD in terms of ergonomics, and price that can still come in slightly below the entry FF level.

Clearly, sanj forgot something in his post.  This:

<SARCASM>

I know this, because I'm almost always guilty of the same transgression...

 ;D  Oh yes, I see it now, sanj's delivery is just so deadpan !

299
Photography Technique / Re: Am I the only one this has happened to?
« on: April 23, 2014, 07:53:02 AM »
So far I haven't had anything like the unpleasant experience that the OP reported. I suspect I'd try and make sure that my actions were unlikely to be misinterpreted and, if they were, I'd go for a conciliatory approach.

This is a fascinating discussion that has raised a number of issues and thrown up a number of questions.  Without wishing to hijack the thread, I would be grateful for an answer to one specific one.

I'm in the UK. We have, at least, two different legal systems in operation here (English/Welsh and Scottish - I haven't a clue how things work in Northern Ireland). We don't have a written constitution and formal rights arising from it. The English/Welsh system is based on Common Law, a mishmash of legal precedents and common sense.

People over here got very jumpy about public space photography after the bombings in London in July 2005. It certainly wouldn't have been wise to spend a lot of time trying to photograph a railway station or an airport, say, in the immediate aftermath of that. In February 2009 Section 76 of the Counter Terrorism Act came into force and appeared to open the door to making it an offence to take pictures of members of the police. The BBC covered this at the time and the police in London tried to enforce this interpretation on at least one well reported occasion, despite earlier assurances in Parliament that this wouldn't happen. References have been made to US First Amendment Rights and EU rulings in follow up debates but neither apply directly.

http://news.bbc.co.uk/1/hi/uk/7888301.stm

http://www.theguardian.com/politics/2009/jul/21/police-search-mobile-phone-court

http://www.urban75.org/photos/photographers-rights-photographing-police.html

http://www.theguardian.com/law/2011/aug/31/do-we-have-right-to-film-police

Does anyone on this forum know what the current state of play is in the UK when it comes to photographing the police in a public place?


I am from the UK, and I am pretty sure that in the letter of the Law it is not against the law to photograph a police officer in a public place. However, the police detest being photographed, let alone filmed. There have been any number of instances of gross police misconduct, not just in the UK, where a mobile phone video has turned up, often first posted on the web, which shows the police's version of the events to be completely false.

Unfortunately now the growing number of Terrorism Acts that are being passed and amended are interpreted by much of the police in the UK in such a way as to be to their advantage in any number of cases which clearly, from the outset, had nothing at all to do with terrorism.

Believe it or not a heckler at one of the Labour Party conferences, an old man in fact, was arrested under  the Terrorism Act and removed. The police were publicly ridiculed by the press, but then of course it is a free press that keeps a country free, and having a good line on suppressing of photography is definitely a worrying move in the wrong direction.

300
Canon General / Re: Canon Hong Kong Announcement April 24, 2014
« on: April 23, 2014, 05:13:09 AM »
I am CONVINCED it is 7D2 with a 1d style body with 2 stops ISO improvement, 12 fps and 1dx focus. Larger LCD as well.

You may well know something that I don't, but I'm convinced it won't be. Canon have left a gap in the aps line above the xxD in terms of ergonomics, and price that can still come in slightly below the entry FF level.

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