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Messages - Sporgon

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286
Lenses / Re: New 50mm Sigma ? There are other options !
« on: April 12, 2014, 02:21:23 PM »
By the way, if we compare it to the analogue days: 36 mm x 24 mm film is estimated between 4 and 16 million pixels depending on the type of film used. Source: http://en.wikipedia.org/wiki/Digital_versus_film_photography
At the top end of the estimate, the difference is even smaller.


My partner in Building Panoramics was in at the dawn of digital imaging business so I know a little about this. I haven't looked at the wiki link, but to all intents and purposes 6 to 8 mp is about equivalent to good 35mm film in terms of resolution. You can scan more meg but you end up recording grain.

Try taking 5 shots at 1/20 on a 35mm focal length hand held with no support. You will inevitably find that one or two frames have IQ damaging blur when viewed at a reasonable enlargement. ( For me it would be four out of five). You may say these are acceptable odds but when that one frame is important it becomes unacceptable.

I read many people on here claiming that the new IS primes are aimed at video, but how many people are 'serious' movie makers wanting these primes compared with the amount of still photographers ? Also when you look at the Canon cine focal length lenses for FF you would have to ask why a 24 and 28, and where are the 50 and 85 ?

287
The outer points on both the 5DII and 6D are perfectably fine in reasonable light and with contrast in the appropriate orientation. But defending them against the likes of the 1D series and now III version of the 5D is pretty pointless. I'm only really familiar with the 1D IIn, but the way that camera nailed focus anywhere made the 5D seem as if it had come out of the Ark. Unfortunately ( or fortunately depending on my sanity) I appreciate that you get what you pay for, but good for Canon putting the majority of it's flagship system in the 5DIII.

However, from what I read, the D600/610 isn't in the 1D /5DIII class of AF anyway despite having loads of x points etc. Nor are the likes of the top end Rebels.

The 6D is a perfectly fine camera but I doubt it will ever satisfy those who wanted a 5DIII at 6D prices.

288
UA = Utsunomiya  2012 not 2006.

Ooops, yes you are quite right. U is 2006. My mistake

289
Hi Beckscum.
Could you please clarify UA from your post please, I am not familiar with this abbreviation.

Cheers Graham.

that they returned full batches of UA lens back to Canon in 2012

I think he's referring to the date code - the use of which Canon seem to be phasing out. In this case it would be lenses manufactured in Utsunomiya during 2006.

290
Lenses / Re: New 50mm Sigma ? There are other options !
« on: April 12, 2014, 07:15:26 AM »
Up to 1/40 you don’t really need IS with a 35mm lens on full frame for stills.

The rest of what you have said is perfectly reasonable, but the above statement is at best outdated and at worst inaccurate. You might be able to hand hold some shots at 1/40 with a 35mm focal length, but generally you won't make full use of your 20mp or whatever.

Shake is quite random, but with the resolution of modern digital FF you really need to be in the region of 2x focal length. Even then you can get random shake. For really critical use nothing beats a genuinely stable mounting platform, but IS is a competent substitute up to a point. Personally I find IS very useful for stills when travelling without a tripod. It allows lower ISOs, greater dof, lower shutter speeds etc when hand held.

291
EOS Bodies / Re: DP Review's 10 most popular camera list
« on: April 11, 2014, 12:39:52 PM »
They have other rankings for SLRs - I think the "Most Owned" list might make you feel better (6/10 are Canon), but you can click on the different categories to see the other DSLR rankings:

http://www.dpreview.com/products/slrs/statistics/mostowned


That's quite interesting. Again it is a specific audience, but you can see why Canon should bring out a 7DII, and why it must be top end but cheaper than FF: therefore aps-c. I've said before, they have positioned the xxD line to allow a 'high end' body above it, and keep that body below the FF price. That's where the market is IMO. I'd say everything is in place for the 7DII apart from the new sensor.

Also interesting on the 600/610D, or rather lack of it. A camera that is significantly better spec'd than the 6D but a tad more expensive I believe, and more than a tad less popular.

292
Lenses / Re: New 50mm Sigma ? There are other options !
« on: April 11, 2014, 11:06:42 AM »
DXO mark one of the most trusted resources online

Whoa ! Steady.

( It's the 11th of April to day. You missed out a 1 ).

293
Black & White / Re: Black & White
« on: April 11, 2014, 09:32:52 AM »
Bit of fun on a film set.

294
Lenses / Re: New 50mm Sigma ? There are other options !
« on: April 11, 2014, 01:46:33 AM »
I think being able to catch precious moments--rather than laziness ::) -- instead of changing lenses is one good reason to use something such as a 24-70mm rather than 3 primes.
But what does ANY of this have to do with the new 50mm Sigma, which your title referred to?
The difference between 35mm and 50mm on an SLR might seem slight to you, but not to models who see the difference in distortion right away.  Sure, the 35mm is great for many shots, but, even on a cropped sensor, what is the point of saying x brand of 35 is an option to any brand of 50mm?

Heck, an iPhone is an option to an SLR, but that's kind of a wide net for a topic too.

Why do I feel as if somebody is about to say, "April Fools!"?

You could take the OP in the context of the next arrival in the EF IS prime line ; the 50 IS - assuming it does arrive. Could be a really fine 50. Problem is a lot of people dismiss f1.8 despite the fact that if it's stellar wide open this speed is fast enough 99.9% of the time.

295
Street & City / Re: Your best street shots of any kind.
« on: April 10, 2014, 06:26:42 PM »
A few city street shots with a difference; nineteenth century London. Shot with 40mm and time machine.

296
On topic ... I sold my EF 40mm f/2.8 STM lens because it backfocused. This was apparently within specifications and I was told to upgrade my cameras to AFMA-enabled models to solve the problem.

Sounds like you've been unlucky; most people seem to report very little MA needed on the 40 pancakes. The AFMA enabled models have completely changed my attitude and needs in lenses. Before, the quality of the manual focus mechanism on a lens was very important to me. Now with AFMA and BBF I basically don't use manual focus anymore, and so I'm using cheaper versions of lenses than I once would have done. Even when zone focusing I use AF. The only exception would be when focusing for a specific distance that is covered by the lens's distance scale.

I've had non AFMA cameras such as the 5D that have been fine until the body has suffered a good heavy knock or drop. Then the critical focus on a fast lens is out.

The irony of it is that these DSLR bodies are highly resilient to physical abuse, but an impact can shift the position of the AF module enough to cause problems.

297
Lenses / Re: a 50mm dilemma.
« on: April 10, 2014, 07:42:23 AM »
I'm waiting to see what Canon has to offer in the new prime IS line. The current three offerings are really excellent, though as has been pointed out by various people on CR because they are the same f stop as the old ones they are regarded as uninteresting 'refreshes': far from the truth.

If a future IS 50mm is in the same vein, that is stellar wide open at say 1.8 or even an f2 lens ( I think it will be 1.8 or 1.7 for marketing purposes), then it could be very interesting after the initial EAP has finished.

298
Technical Support / Re: Canon Rebel T3 Feature guide not turning off
« on: April 09, 2014, 05:06:47 PM »
I've just purchased the Canon Rebel T3 and am learning to use it. However I can't seem to get the feature guide to turn off though I've set it in the menu. Unless I'm misunderstanding what that is.

Here is a photo of the screen that appears to still show the guide though I have it turned off... am I mistaken as to what this is?

Thank you!
Nancy



From your picture I think you have the camera mode dial set on 'no flash', first icon anticlockwise from green box.

When learning just use M, Av or Tv and learn how to control aperture and shutter speed according to what you require. Also you have to manually set the ISO in these modes. P mode can be used as a modified Av mode.

The t3 is a great little camera, not appreciated by gearophiles, but highly capable non the less.

299
Lenses / Re: Which lens to go with
« on: April 08, 2014, 01:36:42 PM »
Sounds like a monopod would be of benefit.


Where these equestrian photographers are shooting cross country events and have to be based at one fence, some of them do use monopods or even tripods. However when shooting show jumping events the photographer inside the ring moves around to get the competitors over more than one fence. The whole round only lasts about 60 seconds. I have never seen a monopod used by anyone under these circumstances.

You can see the sort of thing on his website: www.jumpforit.co.uk

You might even see me  ;)

300
Technical Support / Re: Err 30 (stuck shutter) once - get it serviced?
« on: April 08, 2014, 05:09:04 AM »
I think if it were mine I would leave it as is unless it happens again.If it happens again under a different set of circumstances I would be concerned.

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