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alipaulphotography
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prestonpalmer said:
I'm totally agreeing with you there. This isn't a sports camera. Images is what we buy cameras for so I'd hope an upgrade will take 'better' images. Megapixels don't constitute a 'better' image. New sensor that has clean 3200 ISO and improved dynamic range and auto focus points that cover a larger area of my viewfinder! Focus and recompose doesn't work well with an 85mm f/1.4 but center point works fine if I'm not shooting that shallow. I bought myself an ST-E2 for triggering flashes and also for auto focus assist in low light. A built in one of these would be great for everyone that doesn't have one already otherwise you should look at the 'yongnuo' model which is only about £80 and is actually better than the canon version.
Verifying my posts is annoying me...
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Loswr
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alipaulphotography said:
Don't hold your breath for that one. More points? Likely. All cross-type points? Very possible. But a wider spread of AF points is very unlikely given the limitations of AF systems. In case you didn't know, the AF points in the 5DII cover the same area of the frame as those in the 1DsIII. The 1DsIII has many more points (45), and many are cross-type (19), but the points on the edges of the array are no further from the center than those in the 5DII.
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neuroanatomist said:
Do you know the reasoning behind the limitation? I could look it up somewhere I'm sure, but you probably know off the top of your head.
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Loswr
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Macadameane said:
Basically, three reasons:
[list type=decimal]
[*]Limitations on the size of the secondary mirror. Light for AF passes through the semi-transparent part of the main mirror (most is reflected up to the viewfinder), then is reflected off the secondary mirror down to the AF sensor. There is limited space behind the main mirror, based on the necessary geometry (i.e. the main mirror has to be at a 45° angle to the incoming light, and the secondary mirror has to be behind the main mirror and at an angle of 90° to the main mirror, so it's length is limited by the distance between the main mirror and the image sensor).
[*]Distortion. With many lenses, the edges of the frame are subject to distortion (barrel/pincushion), and that reduces the accuracy of phase detect AF.
[*]Vingetting. The AF system needs a certain amount of light to work. Almost all lenses vignette to some degree, meaning there might not be enough light at the edges of the frame. For example, the EF 17-40mm f/4L has >2 stops of vignetting wide open at the wide end - that means at the edges of the frame, you're below f/5.6 and AF sensors would not heve enough light to operate.
[/list]
It's worth noting that none of these limitations apply to contrast detect AF, so using LiveView you can autofocus right out to the edge of the frame.
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mreco99
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That might explain it, in laymens terms
http://www.cambridgeincolour.com/tutorials/camera-autofocus.htm
http://www.cambridgeincolour.com/tutorials/camera-autofocus.htm
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John Smith
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Would like
- Updated AF, similar to 7D's. Central focus point sensitive at f/8.0 would be really nice.
- 2nd memory card slot. I prefer SDHC/SDXC, but CF would be fine as well.
- GPS. If Canon can put one in the SX230, it should be able to put one in DSLRs.
Nice to have
- Updated metering & AWB.
- Improved dynamic range, ISO & ISO control.
- Higher FPS rate.
- Autofocus in video.
- Ability to use crop lenses.
- Wireless flash control.
Object to
- More megapixels. I have far more than I need, anything more would just burn resources from memory card, through image processing, to backup. I would actually welcome a reduction in resolution, unless crop lenses are supported.
- Updated AF, similar to 7D's. Central focus point sensitive at f/8.0 would be really nice.
- 2nd memory card slot. I prefer SDHC/SDXC, but CF would be fine as well.
- GPS. If Canon can put one in the SX230, it should be able to put one in DSLRs.
Nice to have
- Updated metering & AWB.
- Improved dynamic range, ISO & ISO control.
- Higher FPS rate.
- Autofocus in video.
- Ability to use crop lenses.
- Wireless flash control.
Object to
- More megapixels. I have far more than I need, anything more would just burn resources from memory card, through image processing, to backup. I would actually welcome a reduction in resolution, unless crop lenses are supported.
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For those earlier who want auto-ISO in manual mode, it's present on the 7D and I assume on newer cameras too, so Canon certainly can put it in newer cameras like an inevitable 5D3. The only snag with the implementation is you can't set exposure compensation in that mode. The 7D lacks user set auto-ISO limiting, but I think that did make it into newer cameras.
I voted for better AF, as I think it would be suicide for Canon not to do so. My guess would be a 7D like system as they would probably want to keep a gap between 5D and 1D series. If they stuck that in the existing model with maybe a few firmware features from newer models, call it 5D2N, I'd buy it now.
I voted for better AF, as I think it would be suicide for Canon not to do so. My guess would be a 7D like system as they would probably want to keep a gap between 5D and 1D series. If they stuck that in the existing model with maybe a few firmware features from newer models, call it 5D2N, I'd buy it now.
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alipaulphotography
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lol said:
You should vote with what you want the most! It would likely be suicide, but it isn't my most wanted feature.
www.alipaul.com
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Bill Pryor
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I would be a very happy camper if they would improve the moire issue, provide full HDMI out so people who want to could record more uncompressed to an Atmos or equivalent box. It would also be nice if they made an audio pod, similar to the old Sony PD150's, that would attach to the hotshoe, with 2 XLR inputs and real audio meters. Or, what the hell, they could just put the 5D's chip into a body like the XH A1!
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WarStreet
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I guess it is to be expected a 28mp, about 2/3 or 1 stop noise improvement, and maybe a 1 stop Dynamic range improvement especially in the high ISO range. An improved AF, maybe similar to the 7D, new small features found on the latest cameras, and maybe a 100% viewfinder. There is no doubt they will do all sort of video improvements too since they want to keep the good momentum in the video area.
BUT.... the FPS is the only area we might not see a big improvement since this is not what the camera is intended for. Can you imagine such a camera with 8FPS ? It will be a super camera, with highest image quality , together with good enough AF and FPS for most situations and users. I think that's why I voted for FPS, as it is what I believe it's weak point.
With no competition, we will never see something like this, but with strong competition we might see a good improvement. Sony translucent a33 and a55 as far as I know cost less than a 60D and they have 7FPS and 10FPS respectively. The new A77 is expected to cost similar to the 60D and is expected (reliable rumors) to have 24MP and 10FPS with very high ISO capabilities. If it is true that a cheap APS-C camera can do 10FPS with 24MP I guess Canon do need to improve FPS in most of their cameras. They need to take care about the new FF cameras from Sony which will compete with the 5DIII. Sony has no interest to limit specs on their cameras, they just need to show off big time to steal clients. I think a big weakness of Sony is some side-effects related with the translucent technology, but still, I am happy to see such a competition which hopefully should mean a better 5DIII
BUT.... the FPS is the only area we might not see a big improvement since this is not what the camera is intended for. Can you imagine such a camera with 8FPS ? It will be a super camera, with highest image quality , together with good enough AF and FPS for most situations and users. I think that's why I voted for FPS, as it is what I believe it's weak point.
With no competition, we will never see something like this, but with strong competition we might see a good improvement. Sony translucent a33 and a55 as far as I know cost less than a 60D and they have 7FPS and 10FPS respectively. The new A77 is expected to cost similar to the 60D and is expected (reliable rumors) to have 24MP and 10FPS with very high ISO capabilities. If it is true that a cheap APS-C camera can do 10FPS with 24MP I guess Canon do need to improve FPS in most of their cameras. They need to take care about the new FF cameras from Sony which will compete with the 5DIII. Sony has no interest to limit specs on their cameras, they just need to show off big time to steal clients. I think a big weakness of Sony is some side-effects related with the translucent technology, but still, I am happy to see such a competition which hopefully should mean a better 5DIII
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alipaulphotography said:
It is what I want most, pipping a big jump in MP count as my 2nd choice. e.g. scale the 18MP APS-C sensor up and you get about 46MP. FF sensors have always lagged the density of smaller sensors so I'd settle for 30MP+. Of course everyone has different needs so I can imagine that wont appeal to everyone.
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Loswr
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alipaulphotography said:
What I want the most isn't really there...more AF points is closest. Frankly, I think 15 is enough (pretty close to the 7D's 19-points, and on the 7D it's really rare that I select anything that's not either the center point or one on the outer ring). What I want is better AF - hopefully, we can all recognize that more AF points does not mean better AF. I want all cross-type sensors, a diagonal f/2.8-sensitive center point (the 5DII's center point has just a horizontal f/2.8 line, the vertical line is f/5.6-sensitive), and the low-light AF performance of the current sensor maintained or even improved.
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