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Canon 400mm f/5.6 focussing issues

Hey everybody :)

I'm looking for a little advise to hopefully allay my focussing issues with my Canon 400mm f/5.6.

I was out birding two days in a row where my lens would just not focus on anything in flight. I know on two occasions, my centre focus point (Canon 500D) was slap bang on a bird but the lens would not focus lock.

I experimented by focussing on reeds about 4-5 meters away then focussing on some buildings in the distance, it locked nearly 100% of the time with a very minor lag. The only time it did not focus on the building was when I tried focussing on a white wall, bathed in direct sunlight causing noticeable glare.

A more experienced photographer advised that its not my lens, its due to the cloudless sky being completely monotone blue. He mentioned the sharp sunlight is not giving the lens anything to lock onto.

You guys agree with his assessment? And birder with a 400 f/5.6 also experienced a similar result with her lens.

I had a USM motor of a Canon 100mm macro pack up for no reason and I'm worried this lens may be experiencing the same issue.

Thanks in advance for any advise/experiences everybody :)

file names

Is there a way to change the file naming structure on Canon cameras?

All images are IMG_xxxx If you shoot more than 9999 pictures you get duplicate file names.

When I shot with Olympus cameras you could change the naming sequence, for instance in 2009 I would use 09Hxxxxx as the naming structure, then in 2010 would change it to 10Hxxxxx.

Is there a way to do the equivalent with Canon?

Back/Front Focusing: a Lens Issue, not Body?...

Whenever I catch people talking about f/b focus, the lens manufacturer always seems to have the fingers pointed at them... but I don't understand why!

I'm open to being schooled here, really, but if the camera has a sensor which detects that a subject is in focus at its distance from the glass, to me, it seems the image capturing sensor must be at a slightly more or less distant position than the focusing sensor if it's not receiving the same light distribution, right?! Anybody?

I LOVE my Sigma glass but they require so much MFA on my 5D3 (50mm f/1.4 @ +16!!) which I've lazily accepted, I couldn't use them on my (now sold) 60d, though I'm looking forward to maybe grabbing a 70D for wildlife, with the option of throwing my Sigmas on there... But investing in MFA cameras out of necessity seems... Unnecessary? I'd love to use these Sigmas with a 100D but there's no chance of it if I can expect focus to be off on all bodies.

Maybe I'm way off with the physics/mechanics and it makes sense when you guys exlain what's really going on ;)

Thank you in advance!

Looking for a EF 135mm f2L USM...

I've been scouring the internet today looking for a decent deal on this great lens. Do any of you have any leads which you'd be willing to share? Nothing at Canon (refurbished).

I'd like to get a lightly used one. Have about $830 to spend.

I need one for this weekend (two weddings). I've been looking for a rental, but I'm surprised that I can't find a lens around! Online rental services are going to run, with shipping, around 80 dollars. Maybe I should just buy one!?

I hate to say you told me so, but...

Just attended an Olympus event and got to play in depth with the new OM-D with the fast 12, 45 and 75mm lenses in a model shoot.

The live view AF is really something else, even with the long lens and shallow DoF. Really really fast and really really accurate.

Makes me love my M just a little bit less. Still love it lots and lots though.

I need to remember 2 things:

The OM-Ds don't work with EF lenses.
In video use I use MF anyway.

I know canon have tried to design a system that doesn't alienate existing EF users, wheras Olympus have pretty much had a clean sheet, I just hope the M2 tears more than a few pages from the OM-D's book.

Dust in refurbished lens from Canon

Alright, so I ordered the Canon 70-200 f/4 L non-IS. Actually two as I did not realize I couldn't cancel an order and I had a 20% coupon that I wanted to use. Anyways, so I get both lenses and inspected them. The outside is fine other than some dust I was able to blow off with my blower. Looking through both of them though they both have a pretty good amount of dust in them. I'm trying to decide whether it's worth paying to ship it Canon to have them take it apart and clean it or not. I was hoping one would be clean at least and I could keep that copy but they both have it. I've taken some shots and I'm not seeing anything. Perhaps I'll have to shoot at f/22 at MFD and see if I can see it. I asked lens rentals their thoughts and this is what I got back in reply:

Its hard to say what you might be seeing without a visual but it sounds like either dust or cleaning residue. Most used or refurbished lenses will have a light to moderate amount of internal dust. If they aren't very noticeable, chances are they will never affect your images. There is also a good chance that Canon has opened up the lenses to be repaired at some point and left residue on the elements from cleaning them. This is not ideal, but again will probably never affect image quality. If you are uncomfortable with what you are seeing I would bring it to Canon's attention with some photos of the spots on hand.

I wanted to get everyone's comments on what they thought I should do. Thanks.

sigma 120-300 review at petapixel

http://petapixel.com/2013/11/01/review-sigma-120-300-f2-8-one-sexy-beast/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+PetaPixel+%28PetaPixel%29&utm_content=My+Yahoo

this is a very good lens and is very good for wildlife on a crop body. some are scared off by the talk that it is bad with tc's. i saw the test shots with the sigma tc's at tdp and they look horrible? i decided to buy the lens and experiment myself. from what i have found so far:

it is really good with the 1.4x kenko pro/promaster, sharp, good af, good all around

the kenko pro/promaster 2x is sharp but the colors are washed out and it overexposes by +1 ev fast af but inconstant

canon 2xiii has slightly slower but better accuracy and constancy af, better colors and contrast, same sharpness as kenko pro but performs better in real word shooting

i will try and do some comparison shots and post this weekend

I'm done - I have all the lenses I need

Thanks, or maybe no thanks ;) to a canonpricewatch.com alert I set up, I just snagged a refurbished TS-E 24mm f/3.5L II at 20% off.

With that, I'm done. Really. I have all the lenses I'll ever need to own. I can rent longer super teles, other TS-Es, etc. for jobs or projects.

It's taken me a long time to figure out what I need, but I have and I'm so happy to have completed it :D

My lenses and uses are as follows:

24 1.4L II - I love 24mm, it's my favorite and most used FL, period. The f/1.4 rocks for events and landscapes, and it's nice & small.

TS-E 24mm f/3.5L II - I have more and more architectural work coming my way and TS-Es just can't be beat. I don't like in a big city or shoot interiors much, so 24mm is ideal, plus I can use polarizers and ND filters with ease. I borrowed one from CPS and loved it, but didn't have much time to perfect it. I was very sad to return it once I realized how amazing tilt-shift movements can be.

85 1.2L II - the 50 1.2 and 135 2 are great, but I found the 85 to be more versatile for all types of portraits, and I think it's THE people lens.

180 3.5L Macro - I prefer the longer working distance, included tripod ring, and compression over the 100L. Plus it has the very best color of any Canon lens, IMHO.

300 2.8L IS II - I went for this over the bigger lenses as it's far more versatile (300, 420, and 600) and truly hand-holdable. No gimbal needed, just more patience and skill requireed to get closer to wildlife. I'll rent the 600 or 800 as needed.

Extenders 1.4x III & 2x III - both work awesome with the 180 3.5L Macro, 300 2.8L IS II and 70-200 2.8L IS II

16-35 2.8L II - I don't love this lens as much, but it is very versatile for architecture, landscape, and events

24-70 2.8L II - Perfect do it all zoom #1

70-200 2.8L IS II - Perfect do it all zoom #2

I'm sure I sound a bit nuts :o, but I'd like to thank that I have all I need to own. Has anyone else "completed" their lens kit?

EOS-1 Announcement Q2 2014? [CR1]

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<strong>A new pro body


</strong>Suggestions of a new EOS-1 body to be announced in Q2 of 2014 have surfaced. No detailed specs have been given for the camera, which shouldn’t be shocking this far out from an unveiling. Before the announcement, the EOS-1D X will receive a price drop and the new EOS-1 body would come at a $2000 premium. One would expect it to have a large megapixel sensor at least.</p>
<p>The camera wouldn’t ship until well into 2014. Apparently this information is being passed around to select “pro” dealers.</p>
<p>A Q2 announcement would fall in line with the World Cup in Brazil as a testing ground.</p>
<p>Source: [<a href="http://www.northlight-images.co.uk/cameras/Canon_1D_Xs.html" target="_blank">NL</a>]</p>
<p><strong><span style="color: #ff0000;">c</span>r</strong></p>

Dynamic range Nikon/Sony vs Canon

Hi.

As most of you are aware of Nikon and Sony (I know that Sony manufacture sensors for Nikon) sensors are better when it comes to DR and so on compared to Canon. I have read DXO-tests and many others that verify that. But there seems to be a point at a ISO-value where the difference is not that big. Of course there is an advantage in mp also for the 36mp bodies but the resolution is not what I am thinking of now.

My main interest is wildlife photography and I am almost all the time above ISO 800 to get quicker shutter speed.
At an ISO-level of 800 and more is the advantage and quality still better with Nikon D800?

I will soon spend a lot of money on a Canon 600mm and by purchase that lens I really commit myself to Canon. It would cost the same to go with a brand new D800 and their Nikon 600mm as only the Canon lens because of the big difference in cost. The Canon 600mm really is expensive!

So for you that have more knowledge than me.. Should I stay with Canon (5D mkiii and 7D) because the difference in DR at high ISO is not that big compared to the different brands at ISO 100 or is the image quality so much better overall for Nikon and Sony?

Testresults shows one thing but to use in real life under the circumstances can be so different.

My English is not the very best so no comments please 8)

Widen framing in post: "extrapolate borders" or "non-linear stretch" plugin?

If a shot was framed too tight and I'd like to add some space around it, for example for print and framing - what options are there?

Is there a plugin to extrapolate the edge of the frame a bit so that the extension becomes less visible than a plain color, or a plugin to do a non-linear stretch so that the outer sides of the frames are stretched while most of the inner part remains the same (I know for the latter there is a plugin with this idea for AviSynth video processor)?

How do you do it? Thanks for any insight :-)

What to do, you experience is needed.

So today while trick or treating with my son i dropped my camera with a camera with my 17-40 attached to it. it fell from about 3 feet and landed directly on the lens. The lens cover popped off and there was a UV filter attached to the lens. The Lens filter glass was cracked in a few places and the metal filter was crushed really hard on one side. There were pieces of glass underneath the filter glass. I removed the cracked glass and was able to get the filter off. Upon further inspection of the lens i realized i was screwed. A small ring from inside the lens was popped out. I am assuming this is something to do with whether sealing. Pieces of glass are inside the barrel. can i send this in to canon to get repaired or am i better off getting another one. right now a new lens goes for 739.00. if it can be cleaned out and repaired, what would it cost?

your help is really appreciated.

anthony

Sigma 24-105 f/4 DG OS Sample Images

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<p><strong>Sample images

</strong>Sample images from the upcoming <a href="http://www.bhphotovideo.com/c/product/1009621-REG/sigma_635_101_24_105mm_f4_dg_os.html/bi/2466/kbid/3296" target="_blank">Sigma 24-105 f/4L DG OS Art</a> lens have appeared over at lenstip.com.</p>
<p>The sample images look good to me and the $899 price tag for the lens more than justified.</p>
<p><strong><a href="http://www.lenstip.com/2065-news-Sigma_A_24-105_mm_f_4_DG_OS_HSM_-_sample_images.html" target="_blank">View sample images here</a> | Preorder: <a href="http://www.bhphotovideo.com/c/product/1009621-REG/sigma_635_101_24_105mm_f4_dg_os.html/bi/2466/kbid/3296" target="_blank">Sigma 24-105 f/4 OS at B&H Photo</a></strong></p>
<p><strong><span style="color: #ff0000;">c</span>r</strong></p>

Canon 60d with Rokinon 35mm 1.4

Hello,
I'm new to this forum and was wondering if i could get some help setting my camera in manual mode for video. I shoot in a 10x10 room and choose a 35mm to shoot the area and it works great.
Ive tried some test videos and it looks great to me with this set up. However the camera still asks me when i turn it on, "Ensure a lens is attached"
I would welcome any suggestions form anyone using this set up of just advisement in general.
thank you,
mike

Portable LED light Panel 126 VS 160---Super cheap

Dear Friends.
I make small money in Photography ( Hobby) by shooting the Parties in the Night time. Past 2 years, I do not use Flashes, because the People brink/ Close their eyes when the flasher shoot out the bright light in the dark area.
Yes, I Make my DIY, the Flashes/ LED Portable Lights Panels, and Start with 2 years ago, Buy 2 panels of 126 Neewer Panels from Amazon = 25 Us Dollars / each, And Use since then = Great Light for the Dark area group shots.
Yes Last week, I want Bigger , Stronger LED Light Panels = 160 LED( Color Temperature = 5400K at full Load, and can reduce to 3200K by the dimmer in the unit) , Same Company " NEEWER " Made in China , By Amazon = 34 US Dollars Each---Yes , I just get 2 panels to day, Yes, I use GE. Light meter test to compare Between 126 LED and Ne 160 LED. BTW = $ 34 US Dollars / Each 160 LED Light Panel.
Yes All of them use 6 AA Rechargable Batteries = Eneloop/ Sanyo---Here the Test Result :
For 126 LED at 3 feet from front of panel in the Dark Area = 150 Foot- Candle
For 160 LED at 3 feet from front of the Panel in the dark area = 250 Foot- candle ( An Overcast day will provide an intensity of around 1,000 foot-candle = From Wikipedia).
Yes, I have very high recommend to all of my Photographers friends for both still photos or / and Videography.
Enjoy.
Surapon.

PS, This Weekend, I will use my New 160 LED ( 2 Of Them ) with my DIY Holder, and report back to you.

http://www.amazon.com/NEEWER%C2%AE-Dimmable-Digital-Camcorder-Panasonic/dp/B004TJ6JH6/ref=pd_sim_sbs_p_1

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30 Days to Design Your Portrait Business

Creative live is offering a free intensive workshop called

Its for those who are serious about starting a business and runs for 33 days! There is a initial 3 day introduction, then a one hour segment each day for the next 28 days.
I can't imagine a better opportunity for someone who is serious about starting a photography business, its free if you watch it live, or later, it costs $150 to have access to the video and be able to watch it on your own schedule.
http://www.creativelive.com/courses/30-days-design-your-portrait-business-lori-nordstrom?utm_source=creativeLIVE&utm_campaign=16db4de435-Lori_Nordstrom_Enroll10_30_2013&utm_medium=email&utm_term=0_a2a869e1e5-16db4de435-534002

"The strongest portrait photography businesses have one thing in common: a dedicated, strategic plan for artistic and financial success. Join creative LIVE instructor Lori Nordstrom as she kicks off Launch Your Portrait Photography Business in 30 Days, an intensive course that will give you the step-by-step tools you need to survive and thrive as a portrait photographer.
This three-day introduction will cover the key components of launching or revamping a portrait business. You’ll develop a plan of action for marketing, branding, and pricing that will keep your clients happy and your business growing. As she takes family portraits live in studio, Lori will demonstrate the lighting, posing, and shooting skills she uses to make sure clients come away from a session with photos they’ll love. During one-hour segments spread out over the next 28 days, you’ll also learn about how to pitch your services so every consultation ends with a “Yes!”.
By the end of this course, you’ll have the concrete skills you need to attract clients, build a successful, satisfying business, and deliver stunning results every time."

Sony A7R on DXO - Highest full frame IQ ever

http://photography-on-the.net/forum/showthread.php?t=1339351

DxOmark just published the full Sony A7r sensor test. And according to their measuresand ranking system the camera scores the same points as the Nikon D800-D800E (and that for $500 less). And it literally kicks the Canon5DIII in the butt.

This is what DxO writes about the A7r:

“Although we can’t provide any commentary on image sharpness at this stage in our tests, the sensor in the Sony Alpha 7R performs exceptionally and is on a par with that found in the D800 models. Given the Sony’s small size, low weight and outstanding sensor performance, it’s one of the most intriguing and compelling new additions in recent times.”

Bildschirmfoto2013-10-31um145403_zps7d62d949.png


Source: http://photography-on-the.net/forum/showthread.php?t=1339351

Well played Sony! And thanks to the wonderful metabones adapter, I guess we could say that this really is the "Canon body" we have been waiting for. :D

An Announcement Coming in November? [CR1]

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<strong>Unconfirmed report of an announcement


</strong>I’ve been told that a major retailer will be doing a presentation showing off new gear from the manufacturers. When a third party asked about Canon stuff, he was told that he should attend as Canon folks will be interested. The retailer said they couldn’t say any more about what they’d be showing from Canon.</p>
<p>The mentioned presentation is the third week of November, so is it possible there could be an announcement the week of November 10, 2013?</p>
<p>This sort of thing does happen with retailers. They’re shown or told about gear behind an NDA to get ready for the marketing blitz and to get their orders in on the new products. We have been told previously that no new EOS DSLRs would be arriving in 2013, so perhaps this is for the expected EOS M2?</p>
<p>We have not seen any official invites to press events for that week yet, although Canon doesn’t always do that for a product announcement. We’ll try to get better information about this.</p>
<p>More to come…</p>
<p><strong><span style="color: #ff0000;">c</span>r</strong></p>

Patent: A Pellicle Mirror by Canon

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<strong>Canon coming full circle


</strong>A patent revealing a pellicle mirror by Canon has made its way to public eyes. It seems everyone is researching the technology. Canon did this a long time ago in the Pellix, F1 High Speed, EOS RT and EOS 1N RS.</p>
<p><strong>Patent Publication No. 2013-218241</strong></p>
<ul>
<li>Publication date 2013.10.24</li>
<li>Filing date 2012.4.12</li>
</ul>
<p><strong>Canon patent</strong></p>
<ul>
<li>Pellicle mirror</li>
<li>The transmitted light image sensor in, I lead the OVF the reflected light</li>
<li>Reflectance (transmittance) variable</li>
<li>(Low transmittance) high set the reflectance OVF when, at the time of imaging is set (high transmittance) low reflectance</li>
</ul>
<p>Source: [<a href="http://egami.blog.so-net.ne.jp/2013-10-30" target="_blank">EG</a>]</p>
<p><strong><span style="color: #ff0000;">c</span>r</strong></p>

DPreview: Canon EOS 70D Review posted

A Review from DPReview:

http://www.dpreview.com/reviews/canon-eos-70d

http://www.dpreview.com/reviews/canon-eos-70d/19: "It's only really the smaller viewfinder, less substantial-feeling construction and a couple of minor complaints surrounding JPEG defaults and white balance that count against the 70D in our scoring. Overall, the Canon EOS 70D exceeded our expectations in the autofocus department, and satisfied our needs as a quality enthusiast camera for a wide variety of shooting situations. "

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