Sigma AF 12-24mm f/4.5-5.6 EX DG HSM

I could not find a topic for this lens so here goes. The Sigma 12-24mm is one of the widest non-fisheye lens available for full frame (if not the widest of them all?). I have the original version of this lens, Sigma has also released a newer version of the same lens.

Wide open, the lens is rather soft and really needs to be stepped down to f/8~f/11 to achieve its sweet spot, which is fairly decent when it comes to sharpness. Not unexpected, the IQ fall off in the corners is noticeable. In the range from 14-24mm it cannot compete with the Canon 17-40mm f/4L, the 16-35mm f/2.8L and the Canon 14mm f/2.8L.

However, when using this lens on 12mm as a pseudo prime, it has literally no equal if you discount the Canon 8-15mm f/4L as that is a fisheye. When I use this lens on my Canon 1D MkIII (1.3x crop), I use it firmly at 12mm and I only use it in tight places where any other lens could not frame the entire scene in one shot. Use this lens on a full frame body and you will need to be acutely aware of the position of your feet or they will end up in the shot.

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canon 16-35L MK 1 vs. samyang 14mm

I have a problem making up my mind between those two lenses.

I have used the samyang 14mm 2.8 for a year now for landscape and astro photography with good results.

I just got the 16-35 L mk1 through a work deal and autofocus and exif data is nice to have, and dxo does a good job on the photos from my 6D.

I would like to hear some opinions on those two to help me decide witch one to keep.

Thanks

What is the perfect lens for street photography?

Hi all,

I was having a chat with a group of photographers and it was interesting what their options were on the "perfect" lens for street photography? Some opinions resonated with my own and others were completely foreign yet thought provoking.

Question to everyone:

1. What is your opinion on the "perfect" lens for street photography and why?
2. Which shooting mode do you use?
3. What auto focus setting do you use (single point, af expansion, auto)?


Thanks all!

Tamron Makes the 16-300mm F/3.5-6.3 Di II VC PZD MACRO Lens Official

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<p><em>A high-performance, high-power zoom lens that delivers focal lengths extending from an unprecedented 16mm at the wide-angle end up to a long-range telephoto 300mm! Incorporates PZD (Piezo Drive) and Tamron’s exclusive VC (Vibration Compensation) system to further enhance the real-world performance of this next-generation “all-round lens”, which makes taking photographs more convenient and enjoyable.</em></p>
<p><b>April 10, 2014, Saitama, Japan</b> – Tamron Co., Ltd. (President & CEO: Morio Ono), a leading manufacturer of precision optics, has announced the release of an advanced new all-in-one zoom lens exclusively for digital SLR cameras with APS-C size image sensors that provides an amazing 18.8x zoom ratio.</p>
<p>Since the launch in 1992 of the 28-200mm (Model 71D) high-power zoom lens – which featured a revolutionary compact, lightweight design – Tamron has been continually expanding its portfolio of world-class optics to benefit consumers.</p>
<p>Tamron previously launched an 18-270mm (Model B008) all-in-one zoom lens exclusively for digital SLR cameras with APS-C size image sensors that features a 15x zoom ratio, superior image quality, swift, quiet AF, and Tamron’s acclaimed VC (Vibration Compensation) mechanism, in an ultra-compact package. This ground-breaking lens has been winning plaudits throughout the world.</p>
<p>Responding to consumers’ demand for expanded focal lengths both at the wide-angle end of the zoom range and the telephoto end, Tamron has now developed a completely new all-in-one zoom lens design that provides an impressive focal length range extending from 16mm true wide-angle to 300mm super-telephoto.</p>
<p>The Canon and Nikon mount models will be first simultaneously launched in the Japanese market on April 24, 2014, with overseas launches to follow in mid-May. The launch date of the Sony mount model will be announced at a later date.</p>
<p><!--more-->

<b>Product Highlights:</b></p>
<ol>
<li><b>A further expansion of the imaging range. With a minimum focal length of 16mm (35mm equivalent: 25mm) at the wide-angle end of the zoom range, and a maximum focal length of 300mm (35mm equivalent: 465mm), this remarkable new lens provides the world’s first zoom ratio of approximately 18.8X.</b>

Responding to requests from consumers who wanted to be able to photograph subjects with a wider viewing angle than is possible with conventional high-power zoom lenses, Tamron has developed a unique lens with a minimum focal length of 16mm. At the telephoto end, the maximum focal length has been increased to an impressive 300mm. Users of this new lens can enjoy unprecedented framing flexibility by easily adjusting the angle of view using the convenient zoom ring.</li>
<li><b>Superior, reliable image quality with a universal lens.</b>

The lens construction features 16 elements in 12 groups. This includes three Molded-Glass Aspherical elements, one Hybrid Aspherical element, two LD (Low Dispersion) elements, one XR (Extra Refractive Index) glass element, and one element of UXR (Ultra-Extra Refractive Index) glass, which has greater refractive index than XR. The full use of specialized glass elements in the design contributes to thorough compensation of optical aberrations. In addition, the use of the latest coating technology for suppressing reflections on lens element surfaces minimizes unwanted flare and ghosting and assures sharp, crisp, high-contrast images.</li>
<li><b>Using a new design approach to create an ultra-compact lens.</b>

The latest optical technology has been used to provide an expanded zoom range (compared to the B008) at both the wide-angle and telephoto ends, without necessitating the use of an oversized lens body. By employing UXR glass (which helps to reduce the size of the front lens diameter), an optimized layout of the Molded-Glass Aspherical elements, and adopting a 5-lens-group zoom system approach to provide enhanced design flexibility, the new lens embodies the fusion of state-of-the-art optical design, sophisticated mechanical design, and high-precision lens manufacturing technology, thereby attaining a compact size, an unprecedented zoom range, and superior image quality.</li>
<li><b>A minimum focusing distance of just 0.39 meters supports an extensive range of macro photography capabilities.</b>

The new lens provides a minimum focus distance of 0.39m over the entire zoom range, with a maximum magnification ratio of 1:2.9. This makes it possible to get right up close to the subject of the photo to enjoy easy, stress-free macro photography.</li>
<li><b>PZD (Piezo Drive) delivers faster, quieter autofocus action.</b>

The PZD (Piezo Drive)*1, an advanced standing-wave ultrasonic motor system, delivers faster, quieter, more precise AF action when the autofocus is engaged. There is enhanced support for contrast-detection AF capabilities, and focusing when in live-view mode has been made smoother. The new lens also features full-time manual focus, a function that was not provided by B008, making manual focusing more convenient.</li>
<li><b>Sharper images with VC (Vibration Compensation).</b>

Tamron’s acclaimed VC (Vibration Compensation)*2 mechanism is incorporated into the new lens.*3 VC reduces image blur caused by camera shake to deliver significantly sharper images even when shooting handheld at long telephoto settings.</li>
<li><b>Moisture-resistant construction for worry-free outdoor shooting.</b></li>
<li><b>Upgraded cosmetic design.</b>

Tamron has upgraded the cosmetic design and finish of this lens to create a more sophisticated, high-end look in keeping with the demands of discerning DSLR users. Employing a sophisticated linear pattern rubber grip on the zoom and focus rings, and an elegant tungsten-silver name-brand ring, etc., this newly designed model accentuates its visceral presence with understated elegance and class.</li>
</ol>

Help with choosing a wide angle lens

Hi,
I just switched from Nikon, and I'm looking into rebuilding my lens collection. A 70-200 2.8 is coming in as we type, and a fifty of some sort is also taking place in the bag. That leaves me with the wide angle stuff. I'm now shooting on a 1D mark iv body, and I find it hard to find a decent wide angle lens given the 1.3 crop. I don't need to go wider than 24mm, but I would like to.

I shoot a lot of surfing, and I need to be able to attach a filter on the lens (excludes sigma 12-24mm, canon 14mm). I also need a lens that is good at handling CA and has quick focusing. Cost is not a big concern. I'm eyeing 17-40, 16-35 and the 24mm. What route to go?
Thanks

a 50mm dilemma.

Hello everyone, I'm one of those 'long time reader - first time poster' guys.

Anyway, I'm in the market for a 50mm lens, but I can't tell if I should wait for the new super-hyped Sigma 50 1.4 Art lens or get a Canon 50 1.2L? Any suggestions?

Sidenote - money doesn't matter because I found a really good deal on the 50 1.2, so they're both probably going to be the same price for me, but I'm just curious as to if it's worth waiting for the Sigma or not. Also, I already have the 35 1.4 Art, which is amazing and if that says anything about the quality of the new 50 1.4, then I have a serious dilemma.


Thanks for any input.

Do the t2i and 7D share the same basic sensor?

I've been under the impression that the sensor is shared among the t2i, t3i, t4i, t5i, 60d, and 7d. Am I wrong? Yes they are all 18mp and the dimensions are the same in regards to pixel... but I'm hearing otherwise... and I don't want to go on spewing misinformation...

The .jpg file size varies between the t2i and the others... but who shoots in jpg. Is the raw image basically the same save for that stupid filter the 7D and 60D share (and I don't believe anyone likes).

That's about it... thanks for setting me on the right path.

New 50mm Sigma ? There are other options !

Theres a lot of talk and hype maybe rightly so on the new Sigma 50mm , much of it generated by Sigma ::) making claims they knew would drum up interest.

However having recently given up waiting for its release and the wedding season upon us I decided to go for the new Canon 35mm F2 IS and oh my god what a lens. There is good reason is at the top of DXO marks canon prime ratings ! The sharpness is just amazing, I have since packed up my 24-70 and replaced it with this 35 the 24mm 2.8IS and the 85mm and what a difference, after only a few weddings not carrying the massive 24-70 around it has taken no time at all to adjust and the 35mm spends a lot of time on the camera with the 85 on a second body and the 24 in bag for wider needs.

It is tack sharp from F2 - i used to use the 50 1.2L and that was only any good at F2 onwards. This is better than the 50 1.2L in my opinion and for the price is a steal. No way is the Sigma going to beat this by any great distance. The bokeh is brilliant , it can handle close up nearly as good as a macro lens , it has IS which gives it low light capabilities beyond any other lens i have used and add to that the very good L standard build quality and lovely balanced size and Canon have produced a real gem and all for under £500 !!

Dont pass this up as an option if your looking for a fast standard prime on full frame its a winner.

35mm%20f2%20IS.jpg


Shot by Newcastle and North East Wedding Photographer www.andrew-davies.com Canon 35mm F2 IS at f6.3 iso400 on 5Dmk3

DP Review's 10 most popular camera list

I sometimes glance at DP Review's list of the ten most popular cameras. I believe this refers to how many visitors are looking at the reviews, not how many are sold.

The number of Canon cameras on this list has been declining for the last year or so. Today I looked and there isn't a single Canon on the list.

Most popular cameras according to DP Review pageviews:

Pentax K-3 7.8%
Sony Cyber-shot DSC-RX10 7.4%
Nikon D610 6.0%
Olympus OM-D E-M10 5.7%
Sony Alpha 7R 5.4%
Fujifilm X-T1 3.3%
Sony Alpha a6000 3.2%
Fujifilm X-E2 3.1%
Nikon D5300 3.0%
Samsung NX mini 2.6%

Even if you just look at DSLRs, there still isn't a Canon on the list.

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

I may have to tear up my Canon fanboy card if this situation continues much longer!

Quick start videoing on 5Diii

So I want to start shooting video on my 5Diii. I've done it on a friends 5Diii for his band before but he set up all the settings for what he required.

I've been shooting for about 15 years so I'm pretty proficient and understand the delicacies of still photography but I'm not properly down with frame rates vs. shutter speed when filming.

Are there any set rules that I can follow? I don't really want it to be trial and error...

https://www.youtube.com/watch?v=bAVURlM7nKU : this is the kind of thing I'll be aiming for, with shots from recording, playing live, some set up against coloured backgrounds and messing about etc, I'll be using 35mm 1.4, 50mm 1.4, 100mm 2.8 so nice fast lenses so high ISO's wont be an issue.

what would be the best shutter speed and frame rate to use? does it really matter that much? I'll be editing it all in premiere pro i guess...

Flash bracket for use with 600mm f4L IS II

I have been in a couple of situations where I would have liked to have a flash with my 600. I have looked at a variety of alternatives, but it is not easy to decide what the better solution is. So, since there are lots of experienced 600mm shooters on this forum, I´m asking your for advice. Which flash brackets do you have/recommend?

I have RRS L-brackets for my cameras and plates/feet for my lenses.

Canon EOS sensors, and technology

What I find odd in a number of sensor discussions and comparisons of 35 to MF, The size of the sensor takes the main topic of focus while other aspects are sidelined and one of those is more simple and an integral reasons why MF is better quality.

I read a number of posts saying that its only for enthusiasts and such, which is not true. There are legitimate fields of photography beyond landscape that the MF is crucial, such as high end product, and many other macro related shooting that needs details, also some medical segments. Just because many things get dummied down to the web doesn't mean that's it. There are fine print publications and most importantly, trade shows that surge our economy and industries world wide... they need large clear prints.

So the main feature MF renders better IQ is simple. Its the AA filter I have been asking Canon to make optional for a decade now.

There's a reason why Nikon with D800E, and Sony A7R have product lines without the AA filter.
There's a reason why you read in PRO and top forums the bridge from MF and 35 is getting tiny due to the D800E, and A7R!
There's a reason why you have some shooters waiting for Canon, while others are switching to Sony or Nikon for the need.(I'm holding out as much as I can, and at the threshold).

The other reason used to be the photosite size. MF used to be 11-12, 9 microns. Even Canon 1Ds had large ones.
But the tech is getting cleaner, and sophisticated with lenes and such..as we see MF dB's even scale down the microns to around 5-6 to get higher mpixel count.
Anyway...

Bottom line is that the AA free images have a 3D quality mainly due to the image not getting filtered. I remember shooting with the old Kodak DSLRc. The images were very comparable to the PhaseOne P25 files IQ(never mind the color issues it had). Except one was 14~mp vs 22~mp. Like the MF.

It would be my dream for canon to have its own Foveon-like sensor in a 30-40mp of the highest IQ.

No DOUBT Foveon has something special. No doubt they are being protective about it too long for their own good as other technologies develop. License the thing, or use a Canikon mount and let developers find solutions for the megapixel limit. I wonder if Sony has their own version? I think Fuji does with the "Honeycomb" pattern.

CANON!!! Please come up with a 28+mp AA FREE CAMERA!!! How long do we have to wait? If its so important for a few scientists that have little real world expereince, how hard is it to give the option of putting some filter on the sensor, on the glass, or just a model option for those rare niche shooters who do close-up textile work, or those that worry about moire. It rarely happens and is easy to correct. Don't look at it as a flaw. Or buy Foveon from Sigma and make a real IQ based camera. Blow the doors off others and take that segment too!!! DO IT NOW!!(in my best Arnold voice).

macro question

Hi there

Help needed here please :)

I keep trying to take a picture of this small circuit board (PRam I think) with my canon 5d3 and 100L and get a flare in the middle of the board but for the life of me cant figure out how/why.

I did have the 21 and 31mm tubes attached too and its on a tripod with remote and the lens hood so not too sure how this could appear? there were no windows close byfor sunlight and i tried to shield the circuit when i took the pictures but this still appeared in the centre?

Am I missing something obvious here?

Many thanks

Tony

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