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Messages - rs

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EOS Bodies - For Stills / Re: RAW or JPEG
« on: September 26, 2013, 11:22:05 AM »
Just an innocent question ... most of you that does RAW are using pretty expensive, top-of-the-range cameras and lenses, yet your big argument in favour of RAW is the ability to fix exposure, do lens corrections, and apply noise reduction. Huh?  ???
Why use top-of-the-range cameras and lenses and shoot with the bottom-of-the-range file format?

Pretty much all of those settings you mention are also done in jpeg. In raw, you have fine control over them after the event, allowing you to set them to suit the picture. If its just a snapshot, then fine - any old default settings or best guess before the moment will do. But why buy such expensive gear for snapshots?

EOS Bodies / Re: 6D Mark II
« on: September 24, 2013, 05:29:40 PM »
I think Auto ISO is for the lazy people or people that don't know anything about photography or video. Even with "today's" cameras... how do you let a camera's logic decide how much noise is acceptable in your pictures or video?

In my humble opinion, its like auto-white balance, you know you're a novice if you're still using auto-white balance.
If you shoot raw, setting the white balance during capture time is nothing more than a guide for the raw processor. No second guessing during the decisive moment can produce results as close to your desired look as PP with raw - ignore the WB setting at capture and setting it accurately using a calibrated monitor in controlled conditions.

I don't have meaningful auto ISO on any of my cameras, but I'd love to be able to have that option. The ability to directly control depth of field, have the shutter speed hang around the pre-programmed range I need to stop action, and let the camera control the ISO with me still having exposure compensation would transform my sports event shooting. Its a real pain to use Tv to control shutter speed, and continually move the ISO around to gain indirect DoF control.

As you implied using auto settings is a sign of being a novice, I presume you're not shooting jpeg - so why care about controlling WB in camera when you have full control after the event?

Lenses / Re: Effective iq for same dof on ff vs. crop @ same shutter speed?
« on: September 19, 2013, 07:29:55 PM »
To calculate the equivalent (in FF terms) focal length of a lens on crop, multiply by the crop factor (1.6). To calculate the equivalent aperture (in FF terms) of a lens on crop, again multiply by the crop factor (1.6). This holds true for both DoF and the total quantity of light delivered to the sensor (the measured aperture eg f2.8 is a unit of brightness, total light is a combination of brightness and area).

Conversely, due to the larger surface area of a larger sensor (FF is 1.6x horizontally and 1.6x vertically bigger than crop), it can be used at 2.56x as high an ISO as crop to deliver the same S/N ratio. This is of course based on both sized sensors using the same tech - which rarely is the case.

So shooting a scene at 50mm, f2.8 and ISO 2,500 on crop is the equivalent of 80mm, f4.5 and ISO 6,400 on FF. Shutter speed would of course remain the same.

In other words, if you switch to a larger sensor, feel free to stop down the lens by 1.3 stops and boost the ISO by 1.3 stops should you want to retain the larger DoF you had with crop.

EOS Bodies - For Stills / Re: Canon 6D + 24-105 L combo not that great?
« on: September 16, 2013, 04:31:54 AM »
The camera is unlikely to be the cause - if it nails focus in the critical part of the frame, the shutter speed is high enough and the aperture is small enough for the desired depth of field, the camera, AFMA and user have all done their bit.

It sounds like a bad copy of the lens to me. Reading about others experiences with that lens, it seems to vary a lot. Some get lucky with a lens which is good even wide open, while others get quite bad copies. The one you rented sounds to be off the far end of that scale.

Third Party Manufacturers / Re: New iPhone: Final Nail in the Coffin
« on: September 14, 2013, 10:25:10 AM »
The iPhone, like many smartphones is quickly closing in on the lower end of the market of many types of device, and in some ways, providing an end result which is good enough for everyone but an enthusiast. Plus the fact that these are all blended together so well into one slick, easy to use device, the experience can be better than a collection of dedicated devices.

I own an iPhone 5, and as a result I have no need for a pager, Sat Nav system, MP3 player, PDA, portable games console, calculator or train timetable. Even products such as a compass, torch and a wife tracking device I can now make do without.

However, unlike the average person, I'm into my photography. So for my needs, the iPhone 5 and 5s both fall far short of my expectations - but I have reached the point now where my S90 stays at home all the time. If I want better quality than the iPhone, the S90 just doesn't do it for me.

I can see little point in the average consumer buying a point and shoot in this day and age. They are currently selling to people that don't own smartphones, people that don't realise how little difference in quality there is, or people that need zooms/waterproof cameras.

For me, two big factors that influence image quality are control over depth of field and light gathering abilities. Both of those are directly influenced by the physical diameter of the aperture, no matter how small the sensor. So no smartphone will ever rival a DSLR with a big lens on it, unless the smartphone has an equally big lens on it.

Third Party Manufacturers / Re: Leica Lens M-50 mm. F/0.95 NOCTITUS M ASPH
« on: September 12, 2013, 05:33:20 PM »
If you want something exotic and faster than the canon 50mm 1.2, then look on ebay and find the canon 50mm 1.0L....

Yep, that's the answer if owning a 50 faster than f1.2 on a Canon DSLR is your quest.

Unless of course you want a very fast 50 macro lens - then the Leica lens on your Canon would be good. The Leica M mount has a flange distance of 27.80mm, and Canon EF is 44.00mm. If someone was to make an optics free mount adapter that was just 1.8mm thick, that and the difference in flange distance would be the equivalent of using an 18mm extension tube. Infinity focus would be far from possible, with the minimum magnification probably somewhere around 0.40x.

If you're determined to use the Leica 50/0.95 on a FF camera other than a Leica, I think you're only option is the Sony NEX-VG900 and an M to E mount adapter. I'd much rather one of the Canon 50L lenses on an EOS body, or a Leica body to mount the Leica lens on.

The original 1D was released in mid 2001 before 36x24mm sensors were viable for a production camera - so it was made with the largest sensor available at the time - a 1.3x crop sensor. The mount was EF, and EF-S (which only has an imaging circle big enough for a 1.6x crop sensor) hadn't even been introduced back then (that happened in 2003).

The first ever production FF DSLR was the Contax N of spring 2002. The 1Ds was the second FF DSLR, launched in September 2002, allowing of EF lenses with the conventional film AoV.

The 1D successors carried on with its crop sensor, allowing for fast sensor readout and consequently frame rates, and the 1Ds range carried on with full frame sensors, and slower readout/shooting.

The 1D X is an amalgamation of these lines.

EOS Bodies - For Stills / Smoking flash
« on: September 08, 2013, 05:06:51 AM »
I was shooting an event yesterday, and there were the typical crowds of people taking photos with phones, compacts and DSLR's. At one point during an indoor part of the event, something caught my eye about a guy taking photos next to me. I'm not sure if it was a weird spread of the light from his flash or what, but something made me watch him take the next shot. He was shooting with a rebel of some sort, and as the internal flash fired again, a very noticeable amount of smoke came out of it.

He was wearing a baseball cap, and that was pushing the spring loaded flash back almost home, yet the flash still fired - presumably at full power due to ETTL and minimal subject illumination, and it was mostly projected into a confined black plastic area. I made sure to tell him what happened, and he then sniffed the flash and confirmed it smelt of burning. The flash itself looked fine from my half second glance at it, and I didn't have time to look in the area which I guess was burning.

I know using a crop camera in auto mode while wearing a baseball cap isn't something everyone does, but it can't be too uncommon. It wasn't hot either (inside a tent at about 15 to 20 degrees). If any Canon engineers read this, how about fitting a simple position sensor to detect if the flash is fully up, and only then allow the flash to fire?

I was planning on getting the Kenko 1.4 because I have a 70-300L and the Canon won't fit on it, but the Kenko will.

I have a 5DIII and 6D. Anyone's experiences with the Kenko?

I'm planning to get the Kenko Teleplus PRO 300 DGX 1.4x AF Teleconverter.

The Canon 1.4x TC will work and AF with the 5D3, but only the long end of the zoom will be available to you:


EOS Bodies - For Stills / Re: If you plan to upgrade your camera, read
« on: September 07, 2013, 05:26:10 PM »
Hi there,

I feel it's a waste of money upgrading from one Canon rebel to the next rebel or even a 60D to the 70D.
I suggest that you upgrade only to a larger sensor body.
It is just a waste of money to buy another camera having the same size sensor IMO.

Upgrade your glass instead.
Does this mean that should you already have a FF body, it's a waste of money buying another, no matter what improved features it has? Medium format is the only upgrade path?

With that lens lineup, a lack of action shots and the need to cope with challenging light, my vote is for the 6D

The question shouldn't be about the "1dx for books?", it should be "Where can I find a machine that flips through the pages at 12 pages pr second. ::) ::)
Or 'how do I use iBooks?'

Lenses / Re: A Big Lens Announcement in September? [CR1]
« on: September 01, 2013, 07:02:43 PM »
With the 70D's dual pixel AF and the push for video, why not update these two with STM AF?

If you'll forgive me for a bit of poetic license with the abbreviations, I'd prefer the lenses' AF motors to retain their Ultra Speed Movement instead of being made Slow To Move.

I'm a stills shooter so I prefer USM for my own work, but I can see Canon going down that Stills To Movies road at full crawl  ;)

Lenses / Re: Recommend a 1.4x and 2x for my non-L lenses?
« on: September 01, 2013, 06:49:54 PM »
For all my non-L lenses, or should I say all lenses which won't accept the Canon TCs. Such as: 24-105/4, 70-300/DO, etc. Just for the so-called "emergencies" when you need some reach.
It varies from lens to lens, so if you want people with hands on experience to answer, best to say which lenses  :)

The general rule for Canon extenders is they're meant to work with all the white L lenses and nothing else, but like most rules, there are exceptions. The 70-300L is a white L which isn't supported (but it will work from 270mm onwards), the 180L is black but it works, the 400/4, while white it isn't L, but it works, and there are non L black lenses such as the TS-E 90 which work.

Incidentally, your 24-105 is an L lens  ;)

Lenses / Re: A Big Lens Announcement in September? [CR1]
« on: September 01, 2013, 06:33:48 PM »
Canon has just announced price cuts on the EF-S 17-55mm 2.8 and the EF-S 10-22 wide angle. Could be a sign, or it could be coincidence. Certainly both lenses could use an update/upgrade.
Both are <10 years old, and really, an update/upgrade would mean they'd cost as much as their L equivalents, maybe even more. Unless Canon is churning out an EF-S 10-22 f/2.8, no point in updating the current model, which is a solid lens.
With the 70D's dual pixel AF and the push for video, why not update these two with STM AF? IS on the 10-22 would also help video shooters. And a bit of an optical refresh never goes amiss - as good as these two lenses are, they were both introduced when APS-C cameras had 8MP.

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