I can image a travel charger where the power supply is outside the charging unit - there are many wall (120/240V) to 12V power supplies. The output side is a round/cylindrical plug. Could be a common with a AA charger, ...

Attached to batter would be a much smaller unit - connection to the LP-E4(N) battery and a bit logic necessary. The latter unit I suspect would be no larger than 1 x 1 x 2 inches. If I knew enough electronics I would find an old charger and take it apart to see if this would be possible.

dilbert said:

neuroanatomist said:

tolusina said:

Curved sensors are well proven and effective, been in use at least a few million years.

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So have the lenses designed for those curved sensors. In the case of a curved camera sensor, current lenses would not work (thus the suggestion of a new 35/1.8 lens for the curved sensor). Given the general performance of Sony lenses, I'm not encouraged by their ability to deliver an ILC based on a curved sensor.

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Can you explain why a current lens wouldn't work? I suspect that they will all work just fine. The suggestion of a new 35/1.8 for the curved sensor is just that - a suggestion without understanding.

What I find intriguing is that lenses optimised for curved sensors might be smaller as there is less of a vignetting problem to overcome.

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The elements in camera lenses are specifically designed to flatten out the focal plane so that the output of the lens is roughly in focus everywhere on a flat sensor even though the distance from the sensor to the lens is greater near the edges. Some lenses do a better job than others when it comes to flattening the focal plane, hence the reason that some lenses have poor corner sharpness (as I understand it, anyway).

With a lens that is designed to focus light on a flat plane, a physically curved sensor would only cross the lens's focal plane either at a point or in a circular ring. You'd have to add additional optical elements to the lens and/or remove optical elements from the lens to compensate for that. Otherwise, only part of the picture would be in focus.

Viggo said:

I'm excited!

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I'll wait for pricing before getting excited, but I'm definitely interested!

Dear Friends.
I have this Awesome Lens since 5/22/2013, And this Beautiful Baby 95% on my 5D MK II almost all the time.
Yes, I have so many Canon EF and L Lenses Plus Sigma and Tamron Lenses, But I fell in love with Canon TS-E 24 mm F/ 3.5 L MK II, for the most sharpness at open wide from corner to corner. YES, Manual Focus, But I set up one focus at center View Finder, And When I turn the focus ring , It will Beep me at the right Focus.---Yes, That are the focussing Method that I use for my Bad/ Old Eyes and get the best focus in every times.
Surapon

Looks like Sigma has another winner on hand. if only they can keep sample to sample variation down and can price it competitively. this new lens will sell like hot cakes.

http://photorumors.com/2014/04/05/first-sigma-50mm-f1-4-dg-hsm-art-lens-review-it-trounces-any-similar-model-available-for-less-than-4000/

sdsr said:

Sony/Zeiss don't seem to have figured out how to make a first rate zoom for their A7s yet. If you compared the Sony/Zeiss 55mm 1.8 you would have seen a significant difference too (the 35mm 2.8 as well, probably). But you don't need to attach Canon lens as new/expensive as the Canon 24-70II - you can get fantastic images from many much less expensive Canon lenses on the A7r, even such bargains as the 40mm pancake and 85mm 1.8 - if nothing else, the A7r shows just how good many Canon lenses are!

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Fully agree that "Sony/Zeiss don't seem to have figured out how to make a first rate zoom for their A7s yet"
Sony 24-70 proved even worse than I saw in my initial tests.
Did some walk around with this lens on a7R, looked at the images and found that at short focal length images get blurry at the sides of the frame though more or less OK closer to the center of the frame.
I am very disappointed with the Sony 24-70 - seems that this lens more or less could be good for NEX7 and similar but not a good fit at all for a7R.
But Sony/Zeiss 55mm 1.8 is just perfect on a7R .

As for using other cheaper than EF24-70 F/2.8 M2 Canon lenses on a7R I agree with you that excellent results could be achieved with cheaper Canon lenses. For many people with a7R as second to Canon body this could be good solution. I just do not have them. Some of the Canon lenses though not expensive but are the best in their class
For me my EF24-70 F/2.8 M2 is the mostly commonly lens that was used on my 1DX recently and now it is also perfect fit for a7R

Was the lens fully locked in place? Dirty contacts?

AlanF said:

According to Sigma's own official history, they started to produce their first lenses in 1961 but didn't produce their first SLR until 1976.

http://www.sigmauser.co.uk/index.php?option=com_content&view=article&id=51&Itemid=67

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Wonderful link, Thanks, Alan!

Don Haines said:

Sigma (and Tamron) are companies in transition. For a long time (with a few exceptions) both have been known for fairly poor quality optics but at a great price.. Recently, both have been coming out with good to great optics at a good price.... The Sigma ART lenses and the Tamron 150-600 shocked everyone. For wide skies astronomy, I would be very tempted with the 35F1.4... It is supposed to be a great lens, although I have not heard anything about it from the astronomy crowd..

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Again, more great lenses to put on my Amazon wish-list.

If you do decide to go into astrophotography, look at tracking mounts.... they will do more to help you than and camera or lens will...

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There's a thread here that I've been following that's more of an education on the topic that I hope to join in after I get some deep sky images under my belt.

Hi,
Canon PowerShot N100 is the best camera. The N100 has special canon’s Hybrid Auto Mode features that captures a few seconds of video before you click photos and at the end of the day when you finished clicking images the camera automatically collects all small clips and creates a small movie. Canon N100 has a Mobile Device Connect button that once set up, allow users to connect directly over Wi-Fi to Android and iOS with just a button push. To make the setup easier the N100 has NFC for android users.Key Specifications of Canon Power Shot N100 include 1/1.7 inch 12 MP BSI CMOS sensor, 90 degree tilting 3 inch touch screen, 5X f1.8-5.7 24-120mm lens.

Coolhandchuck said:

Here's the link.

http://slrgear.com/reviews/showproduct.php/product/1677/cat/30?utm_medium=referral&utm_source=pulsenews

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Thanks so much for posting this! Very impressive lens indeed, quite a beauty. Check out the size of that front element…is that not bigger than the Canon f/1.2? Even if it’s not…I like how big it is.

However, this review lacks any mention of the bokeh quality and LOCA…which is of paramount importance on a fast aperture lens.

I suspect the Sigma will be noticeably below the sharpness of the Zeiss Otus, but it will still be more than sharp enough for literally everyone. It’s really just the background bokeh highlight smoothness that I would want to know about before seriously considering purchase. I also suspect my Cosina Voigtlander 58mm might be close or equal to the sharpness of this new Sigma lens. Of course the Voigt is fully manual, and likely has far worse bokeh and LOCA. It’s also a lot smaller and lighter, and has a metal body, yet with a “zeiss” feel to it.

I think I’ll be buying the Sigma 35mm Art, before I buy another 50mm lens. Does sound like I’ll really be missing out, though!

24-200mm f/1.4-2.0 Lens with a "large" sensor" although not mentioned how large is an interesting combination but most probably unlikely or even less portable than the other G cameras which is almost as bad.

Sorry, everyone! Did not mean to kill this thread.

Regularly scheduled medium format discussion should continue from here.

ktatty said:

the 5d with the 40mm 2.8 is a great travel set up- especially all day with kids at Disney. I usually take the 28 mm 2.8 or the 40 2.8 in those situations.

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That makes sense and I'm finding that the 5D with a single prime is the way to go for me, too, when I travel.

crazyrunner33 said:

I have all the cameras you've listed along with the 5D with Magic Lantern and use the Blackmagic. The stock video quality in the 60D is the same as the 7D, the T2i, T3i, T4i and very similar to the T5i. Most of the cameras are stuck with 2009 lineskipping technology, but the 7D would be the way to go out of all those cameras with Magic Lantern. The CF card helps and gives you the option to shoot RAW video with Magic Lantern. When using the crop mode on the 7D in ML it will give the look of the Blackmagic Pocket Camera and will not have the aliasing issues that are plagued by most of the Canon cameras.

As a Canon owner and user of he cameras listed above, I recommend either the D5200/D5300 a GH3 for your price range and for using the camera for mostly video and some stills. The reason is because the 60D and 7D look very soft and full aliasing in the stock video mode when compared to the others.

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Don't you think the new T6i will have a new sensor?, as you said the technology is 4 years old. since 2009.

edwyun said:

For lenses, require proof of purchase AND warranty card?

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At least in the EU, you can forget about any warranty cards, the receipt is the only proof of purchase required... you also don't need any original packaging as some manufacturers try to tell you.

If it's true that the 7D II will be announced in May, this Nikon D9300 rumor would have a quite exceptional timing for a mere coincidence.

Re: Canon U.S.A. Introduces The HJ18ex7.6B Portable HD Eng Lens, Delivering Outstanding Optical Perf

Caps18 said:

Why don't more lenses come with the built in motor drive for smooth zooming?

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Size, weight, and price would be three reasons I could think of. This is a $22,000 lens for a sensor size found in P&S cameras.

mackguyver said:

scyrene said:

Thanks very much for this. Generally it's not possible to know (in my experience) where birds will be flying, although it's now swallow season (the first sand martins have arrived for the summer), so I will seek out where they congregate. I'll let you know!

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I understand and unless they're bats coming out a cave, you never know the exact direction, so maybe I should have said to point your lens in the general direction where most birds seem to be flying in or out from . The key is staying stationary - moving around will usually leave you unprepared for BIFs. Good luck with the swallows - they're about as tough as they come!

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Thanks again Swallows are super tough - but they are so numerous in the summer, and they often fly quite low, back and forth over the same spots, that with enough patience even I've been able to get a few shots. I've never spent enough time on it, but you're right - if I stay in one place it should be easier

sdsr said:

Sabaki said:

It's becoming harder to convince my friends that buying only Canon gear is the right thing to do.

Sigma have put out some amazing lenses in the last two years and Canon's only memorable release is the Canon EF 24-70mm F/2.8 L II.

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I guess "memorable" is subjective, but over the past couple of years Canon has released, in addition to the lens you mentioned, the 24-70 f4, 24IS, 28IS, 35IS, 40mm pancake, and 200-400L, all of which are first rate regardless of whether one may actually want any of them.

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Agreed, Canon has made several memorable lens releases. The 24-70 and 200-400 are probably the most memorable, but most people who have one seem to rave about the forty shorty, too!

jdramirez said:

mrsfotografie said:

Rienzphotoz said:

Rienzphotoz said:

I think this is a very good idea for any camera that does not have a tilt/flip LCD screen and Surapon as usual is the master of coming up with such gadgetry ... here is a link to his thread on how he did it:
http://www.canonrumors.com/forum/index.php?topic=20122.0

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On the same subject, one of the CR members (pdirestajr) shared this Flipbac Angle Viewfinder ... its a neat little tool for those who don't have a flip screen and would like to have one for under $15.
http://www.adorama.com/CZFB3B.html
http://flipbac.com/
Original post by pdirestajr can be found here:
http://www.canonrumors.com/forum/index.php?topic=20122.0;topicseen

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It's a nice workaround if you need a flip screen, but those reflections are very obviously fake

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Agreed. If I recall correctly... the angle of inflection is equal to the angle of deflection.

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You guys are wrong ... this fliback angle viewfinder can defy the lawas of physics for just $15 ;D

EDIT: Before someone thinks its true : or starts blasting me for leading people astray, let me clarify that this flipback angle viewfinder reflects a flipped view of the image of the EOS-M's LCD screen.

Now it seems to be working fine . It seems that like you'd expect, the files auto-rotate with Camera+PC or PC rotation set, but not when it's off. On the PC, Windows rotates it even if it was set to off, but DxO, PS, etc. don't. I swear it was set to PC only rotate, but given this test, I guess it wasn't. I feel a little crazy either way!

It does sound as though the 70D has similar AF jitter issues as the 7D. If you have a 5D III now, then I have to say, you will probably be disappointed in the consistency of the 70D AF. When it locks, it's pretty accurate, but it doesn't maintain the lock well...AF constantly shifts around, and it can result in soft detail. I've had this problem with my 7D, it happens with a lot of 7D's, and it's the biggest problem with these cameras.

My AF jitter is the reason I'll be getting a 5D III this year.

That looks like a lot of fun! Thanks for sharing.

Huh. I thought it was the other kind of bayonet mount. Imagine that, some hipster spearing the brim of his fedora in the process of answering a call...

Jim