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Messages - heptagon

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Lenses / Re: Question about TDP's sample crops
« on: August 03, 2013, 05:07:37 AM »
I suspect that TDP only focuses at the center and doesn't refocus for corners or edges so just a trace mis-alignment, like a paper thin one, and....

As far as I know they do separately focus for every spot, repeat the test more than once and take the best result for each.

Besides thin DoF there is field curvature on a few lenses which makes it impossible to get a flat screen in focus.

Lighting / Re: Battery Mystery
« on: June 02, 2013, 04:46:45 PM »
Neuro, that could check out. The flash draws such a high current that the voltage of one battery breaks down completely and it's in short circuit or reversed. Then the chemistry of that battery breaks down really fast and it goes bad. Luckily it didn't explode or catch fire.

Lighting / Re: Flash that will endure over 2000 continuous shots?
« on: June 01, 2013, 06:26:00 PM »
i've heard pretty good words for the nissin mg8000
however you'll need a battery pack for sure.

why not continuous lighting?

I have tried regular lamps next to books for shots, but they come out worse than with what I can get with a flash. With flash, the pics come out very nice and clear.

Do you have a link to continuous lighting products that you recommend?

You might want to provide extra details on what exactly you do. A static scene should be perfectly sharp using long exposure and any static light.

Except if it's not really static or you do something wrong to generate/catch vibrations with your camera setup...

The 2x only makes sense if your target is too small to fill the frame on 200mm with the 1.4x on a crop camera.

Pricewatch Deals / Re: Canon EOS M w/22mm f/2 STM $399 New
« on: April 12, 2013, 02:46:07 PM »
Are they starting to sell of their stock for something new?

EOS Bodies / Re: EOS 7D Mark II Test Camera [CR1]
« on: March 28, 2013, 08:03:32 AM »
If DR improvement is not mentioned it won't happen, so we shouldn't expect it or speculate about it. Same sensor as the 650D but smaller (more noisy) pixels, faster readout, better AF and Body. I'd call this camera a 6.5D.

Would you as a landscaper be disappointed if it only had ISO100, no VF and no Phase-AF?

Could you use ISO25 if it gave you more DR?

Is the Live-View-AF of the EOS-M sufficient for your studio shots?

If you are OK with all these, the new Camera would be the ultimate mirrorless resolution and DR monster which doesn't compromise with general usability wich already is provided by the 1Dx.

EOS Bodies - For Stills / Re: 6D Micro adjusting lenses
« on: March 26, 2013, 04:27:47 PM »
If it's not broken, don't fix it.
If you don't know where it is, and don't experience any problem with your camera/lens combination, then don't be so haste.

Well my 50mm 1.8 front focuses everytime i use it so ive been having to use manual focusing so i am hopin i can just adjust it through the micro adjustment

Did you also read the post here about the new quick and easy adjustment method?

39 serious improvement in terms of AF (apart from the 5D Mk.III and 1D line which are both above what I am willing to pay for a camera, besides ... I used an EOS 3 for many years and in my opinion that many AF points only makes sense with "Eye Control" included).

The real RGB focus tracking D800 enables you to easily focus-recompose. Focus your subject with the center point. Recompose and your camera recognizes the movement and uses the outer focus points on your subject. When  shooting hand-held this is even better than "Eye Control" because you can actually control it easily.

1 stop ISO improvement is hardly possible. Maybe 1/2 or 1/3 stop. What would, however, be possible are 3 stops in dynamic range at ISO 100. What would also be possible is to significantly increase the number of pixels without losing sensitivity after downscaling.

Therefore the safest bet is a higher megapixel sensor with slightly more noise and the same dynamic range after downscaling. Sad but true.

EOS Bodies / Re: Canon Announces the EOS T5i
« on: March 22, 2013, 01:20:53 PM »
I'll not be surprised if 70D and 7D2 will sport the same 18MP sensor... Maybe some other features will be improved but if they're not going to upgrade their sensor technology, I'm still expecting the old 18MP sensor.  Anyway, I just hope they can drive 6D's price down a little bit more.

If they had a new sensor ready i'm sure they would have told us. If they had it ready by now, they'd release either the 70D, 7D2 or both. They didn't which means they don't have the sensor ready. Now they can postpone it but they need to release something. So they wait a bit and then release a camera with the old sensor and some gimmics like WiFi, touch-screen or slightly better framerate and AF. 70D gets single card no sealing, 7D2 dual card slots and sealing. Then we wait for the new sensor to arrive in about 2015..16..17.

EOS Bodies / Re: Canon Announces the EOS T5i
« on: March 22, 2013, 04:06:33 AM »
With 5.0 fps Continuous Shooting and a 9-Point All Cross-Type AF System, it's quite obvious that this new release was aimed directly at soccer Moms... Am I the only one that sees that? 

the 650D had the exact same features...same fps, same AF borrowed from 50/60D

But it didn't have the same picture effects... instant Upload to Facebook is still missing though. (I hear the 750D will come out soon.)

EOS Bodies / Re: Canon Announces the EOS T5i
« on: March 21, 2013, 11:55:36 AM »
Definitely the same old sensor technology (higher ISO shots)...

Are you sure? In the Sky of the Nightscene I would expect more banding. But these are JPEG anyways so what I'd like to see is a pushed RAW in order to see if it still has the same banding.

EOS Bodies / Re: 600D vs 100D
« on: March 21, 2013, 11:43:26 AM »
Anyone have any idea how the SL1will stack up against the 5Dii / iii in low light? I'm a 5Dii owner and want to know if I can get decent high ISO out of it as a backup camera...

Probably about the same as how the 4Ti does now.

Probably the same as the T3i, T2i, 60D, 7D... all have basically the same sensor technology.

EOS Bodies / Re: Canon EOS Rebel T5i Leaks
« on: March 19, 2013, 06:56:40 PM »
Some think that the number of pixels defines sensor technology.  That's why we had megapixel wars, because the uneducated masses think that more is always better.

Besides pixel count there is dynamic range and color sensitivity. Higher pixel count while keeping the noise levels down is a net plus. You can always reduce pixel count in software but you cannot increase it.

However, MP count does not define technology, and it creates issues for many users who do not own or want to own the fastest and  latest computers.  My D800 low light images took way to long to render in LR 4 on my fairly new computer, and NR or brush actions took a almost unbearable amount of time.  I used it for a couple low light events, and processing 500 images took far too much time, so I sold it.  The 5D MK III images process very quickly. I also found that even with high end Nikon glass, I usually could not take advantage of all those pixels.  The best images were definitely better, but in the end, it wasn't worth the time to process them.
I could see a landscape photographer who took a few images and had time to process them being very happy with a high mp camera, but not the average Rebel user.
Of course, there will always be those who brag about how many MP their camera has, but only a few who can take advantage and actually get more detail.  In any event, a user will not get worse images, that's not a concern.

Well that's what I call an educated opinion - rarely found around here in the heat of the discussion.

What i'd like to see is an sensor with a pixel resolution much beyond the diffraction limit (i.e. about 16 times the megapixels we have now) which makes antialiasing filters and demosaicing virtually redundant. From this sensor we can downsample by a factor of 2 to 10 in order to get processable and sharp images without the problems at pixel-level we have today. I'm sure this will happen within 5-15 years but i'm not sure if canon or nikon are the first to introduce this technology. Maybe canon has development started on something like this because while it won't perform very well in the high-iso-regime it will surely blow minds in the low-iso-regime (ISO25).

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