Threads

jonathan7007 · Mar 15, 2013

All,
Please comment. I just bought a used 1DsMk3 and saw a consistent "back focus" -- that is, with a few different lenses images appeared to be focused on a point a little behind the intended point of focus... best I could remember, of course, where I asked for focus. Not 100% but a lot of images showed this.

I own Reikan FoCal and made some time today to test as the sun went toward setting (we rarely have low winds here...) and got through the following lenses: 24-70 v2 (at 70); 70-200 v2 (at 200); and the Sigma 35mm f1.4. The last test was asked to soldier on through what I know was too dim a light. Yes, I know it's best to do this with sunlight.

The results were all positive numbers like 4, 7, and 5, respectively.

So are positive numbers in FoCal consistent with my description/observation of back focus?

I do plan to redo this under better conditions. Hard to get all the factors -- including time -- together. I did like having the test run automatically, as my 5DMk3 has the annoying SDK failings that Reikan tells us are NOT in the 6D camera software.

Thoughts?

jonathan7007

Andy_Hodapp · Mar 14, 2013

Here are some shots I got with my S100 last summer at the St. Louis Zoo

rcarbonell · Mar 14, 2013

Is micro adjustment setting stored in the camera or lens?

I bought a 2nd hand Sigma 50mm 1.4, I really like the lens build, IQ and specially the bokeh. However it tends to front focus and is very noticeable at 1.4.

I was thinking of renting a 50D/7D/5D to micro adjust my sigma, then use it on my 60D.

I'm hoping someone with experience doing this could shed some light before I rent a camera.

Thanks!

Totti · Mar 14, 2013

Hi guys,

Does anyone have any good resources / links to information and tips on bottle image photography?

I am shooting wine bottles, and my current gear includes
- Light Tent
- 2 lamps
- Tripod
- Speedlite for fill

But help regarding better techniques would be great, as dealing with reflections and light bouncing off various parts of the bottle is tricky!

Cory · Mar 14, 2013

I have a T1i, Sigma 17-50, Canon 100 2.0 and Canon 200 2.8 and am very spoiled by the image quality. Anything less would be a very large fail.
We're off for our big Alaskan trip and I'm undecided (for my telephoto needs) whether to just stick with the 200 2.8 and deal with the limitations (in exchange for the ridiculously great image quality), add a 300 f4 IS (which could potentially be a hassle) or get a 70-300L (which could serve many purposes to include outdoor sports and events).
Another option might be a 70-200 f4 IS or non-IS or one of the consumer grade 70-300's.
Any insight would be great.
Thanks.

mrsfotografie · Mar 14, 2013

I've recently acquired a Sony NEX-6 because I wanted to get a good (APS-C) compact system camera and Canon isn't quite there, yet. The last few years I've been pretty loyal to Canon, until now.

What other camera brand do you actively use, other than Canon? If you like, please specify which model and why.

factoryxii · Mar 14, 2013

Hello I'm using 35mm f/1.4 for 2 years, and really want to give 50mm f/1.2 a try. Just wondering which is better for "walk around" & Portrait？anyone list 2 difference and experience？

get 50mm and sell 35 or keep both？ or 50mm+16-35mm？

Please give me some advice thanks

Kankalin · Mar 14, 2013

Hi

I'm about to make a timelapse movie (dawn, dusk and stary night) next week, using a 5d mkIII. But im considered about the helth of the machine, dont want to waste mirror count.

So i was thinking about using mirror lock up function to save the mirror mechanism.
Does it worth it? Should i be considered about the sensor (continous lights) instead? Is there any dangers, disadvantages?

So im looking for someones experience in this field.

Thanks

axtstern · Mar 14, 2013

I"m using a 5D and a 60D, the later as a kind of tele converter to my lenses.
Now there is the talk of a smaller than Rebel form factor which still connects to EF and EFS.

What would be the maximum sensor size possible if you want to use EF and EFS lenses but desire to achieve a 2.0 rather than the 1.6?

Carying a somewhat smaller camera just for the sake of having a small camera does not apeal to me... but a body that makes my 120-300 2.8 become a 240-600 2.8 would be a dream.

sanj · Mar 14, 2013

http://www.petapixel.com/2013/03/13/world-press-photo-winner-had-to-sell-his-camera-last-year-to-survive/?fb_action_ids=10151500507336919&fb_action_types=og.likes&fb_source=other_multiline&action_object_map=%7B%2210151500507336919%22%3A167279560092977%7D&action_type_map=%7B%2210151500507336919%22%3A%22og.likes%22%7D&action_ref_map=%5B%5D

alexturton · Mar 14, 2013

I'm looking for a new wide angle lens for 5dmkiii for landscapes.

I'm selling a sigma 24 70 hsm because generally I find its not sharp enough and the af is slow. I have 35, 50 and 85 covered by wide aperture primes so I'm not to bothered with the zoom anymore either.

The options I'm considering are

Canon 16 35 f2.8 ii
Canon 24 f1.4 ii

Any thoughts on these two lenses? Or any other ideas to cover wide angle landscapes?

Thanks
Alex

Totti · Mar 13, 2013

Hi guys,

In the hunt for becoming a better photographer, my new camera is bringing me all sorts of joys.

But, I am a little confused as to the general consensus of what AF mode to leave my camera in is best. I started using Single Point AF, then surround and even grid.. But I am unsure as what you guys use and whether or not there is a specific 'general' mode you leave it in?

sagittariansrock · Mar 13, 2013

At B&H fo0r $ 499:

http://www.bhphotovideo.com/c/product/918894-REG/sigma_30mm_f_1_4_dc_hsm.html

NostraHistoria · Mar 13, 2013

Can anyone tell me which filter will be the best for a 18-55mm lens? Brand and model please. Money does not really matter. I want the best. Link, please.

And yes, I searched for a thread on it but there was nothing useful.

Schruminator · Mar 13, 2013

Just a random question I was thinking about: which eye do you raise the viewfinder to when you're shooting?

I instinctively raise the camera to my left eye and always have. However, I was debating if it'd be worth learning to use my right.

That is, with my right eye still on the viewfinder, in theory I could use my left to look past the camera and survey the scene-- then quickly switch to using my right when I needed to aim, compose, and shoot.

Obviously it's not too important in the grand scheme of things, but I was just curious where you guys stood.

Canon Rumors · Mar 13, 2013

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<strong>New white lenses?</strong>

There has been some talk in the last little while about these two lenses possibly being replaced sooner than later. From personal experience, I know that Canon has discontinued the lens hood for the <a href="http://www.bhphotovideo.com/c/product/542293-REG/Canon_2746B002AA_EF_800mm_f_5_6L_IS.html/bi/2466/kbid/3296" target="_blank">EF 800 f/5.6L IS</a>, this hood also worked with the 400 f/2.8L IS. Another lens that has become quite hard to get is the <a href="http://www.bhphotovideo.com/c/product/542292-REG/Canon_2297B002_Telephoto_EF_200mm_f_2L.html/bi/2466/kbid/3296" target="_blank">EF 200 f/2L IS</a>. I have talked to Canon Canada and they’ve been out of stock for a while with no ETA. That’s not always a perfect way to measure replacement of a lens, but with the more expensive ones, it usually is (I’d say 90%).</p>
<p>We’ve been told both lenses would be replaced after the EF 200-400 f/4L IS 1.4x is officially announced and production has started.</p>
<p>Current stock levels on the <a href="http://www.bhphotovideo.com/c/product/542293-REG/Canon_2746B002AA_EF_800mm_f_5_6L_IS.html/bi/2466/kbid/3296" target="_blank">EF 800 f/5.6L IS</a> remain good, but how many $13,000 lenses do they sell? Replacements for both would make sense as Canon could use the same exterior materials that they’re using in the 200-400, <a href="http://www.bhphotovideo.com/c/product/732108-USA/Canon_4411B002_EF_300mm_f_2_8L_IS.html/bi/2466/kbid/3296" target="_blank">EF 300 f/2.8L IS II</a>, <a href="http://www.bhphotovideo.com/c/product/732109-USA/Canon_4412B002_EF_400mm_f_2_8L_IS.html/bi/2466/kbid/3296" target="_blank">EF 400 f/2.8L IS II</a>, <a href="http://www.bhphotovideo.com/c/product/754507-USA/Canon_5124B002_500mm_f_4L_EF_IS.html/bi/2466/kbid/3296" target="_blank">EF 500 f/4L IS II</a> & <a href="http://www.bhphotovideo.com/c/product/754508-REG/Canon_5125B002_EF_600mm_f_4L_IS.html/bi/2466/kbid/3296" target="_blank">EF 600 f/4L IS II</a> lenses.</p>
<p><strong><span style="color: #ff0000;">c</span>r</strong></p>

Canon Rumors · Mar 13, 2013

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<strong>The first spec list?</strong>

It looks like the first spec list of the “small DSLR” coming from Canon is making its rounds. I can confirm that the next Rebel is said to have the exact same sensor as the current 650D and EOS M. The big feature difference would probably be the size and some of the interface functionality. Let’s hope it doesn’t share the same AF performance of the EOS M when in liveview mode.</p>
<p><strong>Specifications</strong></p>
<ul>
<li>18MP sensor (same sensor featured on the EOS M and EOS 650D)</li>
<li>DIGIC 5</li>
<li>Touchscreen similar to the EOS M</li>
<li>9 focusing points</li>
<li>A new hybrid CMOS auto-focus</li>
<li>98% viewfinder</li>
<li>6fps</li>
<li>ISO up to 25,600</li>
<li>EF and EF-S lens support</li>
<li>HD video</li>
</ul>
<p>The announcement for the next Rebel isn’t too far away, though we cannot confirm if it’s going to appear alongside the EOS 70D next week.</p>
<p>Source: [<a href="http://www.canonwatch.com/breaking-news-first-specs-of-canons-super-small-dslr-showed-up/" target="_blank">CW</a>]</p>
<p><strong><span style="color: #ff0000;">c</span>r</strong></p>

GMCPhotographics · Mar 13, 2013

Guys, I'm wondering if we can collate a set of web links which points to sites which show T-Stop listings for Canon lenses?
DP review are now adding T Stop listings for their reviews, starting with the new 24-70 f2.8 II L. But they aren't retrospectively re-working all their other reviews. So I'm wondering if there's any other sources? DXO optics list a single T-Stop value for their lens reviews...but this is only good for primes. Zooms need at least two values, one from each end of the zoom.

Harv · Mar 13, 2013

This question is directed to the technically knowledgeable out there and has to do with in-camera noise reduction settings. Although I'm shooting with a 1D4, I would guess the same would apply to all models.

In a nutshell, is in-camera noise reduction (assuming it's enabled) applied to RAW files or just to JPEGs? If it's applied to RAW files (which is all I shoot), have any of you shot RAW with noise reduction disabled, and if so, how were the results?

I tried to do a search here on this topic but was unable to find any information.

Thanks.

wickidwombat · Mar 12, 2013

I grabbed a couple of these from this seller off ebay
http://www.ebay.com.au/itm/280692958416?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649

They arrived yesterday and I installed them on my Lensbaby composer pro with sweet 35 optic
and on my samyang 8mm fisheye

really well made and come with a really nice accurate little plastic locating template so you get the chip in exactly the right spot as well as some little plastic filler/spacers to bring the height up (which i needed on both these lenses.
I glued them on with araldite a 2 part epoxy glue that sets quite fast but not too fast allowing me to get the position just right, importantly the glue does not have vapour like superglue which could mess up the rear lens element.

I followed these programming instructions and it all went perfectly
http://www.leitax.com/conversion/Chip/Dandelion-Canon-programming.html

I hope this info helps anyone else looking to do the same

grahamclarkphoto · Mar 12, 2013

The concept of previsualization in photography is where the photographer can see the final print before the image has been captured. Ansel Adams dedicates the beginning of his first book to previsualization, and is often quoted as saying "Visualization is the single most important factor in photography". Understanding then the significance of this approach is of high value for photographers of all kinds, as it has the potential to unlock greater creative vision, and give greater control (and predictability) over the print process.

Although I'm still just a beginner, I have consolidated some of my thoughts on this here: http://grahamclarkphoto.com/how-to-pre-visualize-a-photograph-like-ansel-adams/

Hopefully others can find it useful!

Graham

jimjamesjimmy · Mar 12, 2013

im looking for a cheapish bird/garden lens but cannot afford a nice L lens.

prime or zoom, doesnt bother me, probably 300mm+ on a full frame.

does any body know a good model from any manufacturer , of course its not gonna be the best optically, probably noisy, slow autofocus, bearing all that in mind, whats the best of the worst out there?

thanks for any recommendations

Rotrypwr · Mar 12, 2013

I see continual comparisons between the canon 24-70mm f/2.8L II, EF 24-70mm f/4L IS and the EF 24-105mm f/4L IS but they are all shot at low apertures. I shoot a lot of landscape photography and would like everyones advice on the sharpness of these lenses around F9 or F11. Will I notice much of a difference at this aperture between any of these lenses?

jrista · Mar 12, 2013

I just came across some articles written by ctein at The Online Photographer. He brought to light a term that I think would be very useful when it comes to discussing dynamic range of modern cameras. Frequently, the debate arises about what DXOMark's Print DR statistic means, usually in conjunction with the D800's whopping and hard-to-swallow rating of 14.4 stops. Some people have come up with the term "Photographic Dynamic Range" to refer to the thing most photographers think of when they hear "dynamic range", but the meaning of PDR is not super clear all the time. I think ctein's explanation in the two articles below is an excellent one, and I like the differentiation the term "Exposure Range" allows relative to "Dynamic Range". I think Exposure Range (apparently an existing term used in the film days) appropriately and accurately describes what most photographers think of when they hear "dynamic range". Dynamic Range, the way DXO describes it, is quite appropriately called Dynamic Range as it has to do with the "signal", not necessarily the usable range of tones in an "image", nor the characteristics or quality of the noise that may affect the exposure range of the image.

http://theonlinephotographer.typepad.com/the_online_photographer/2012/09/dynamic-range-is-not-exposure-range-part-i.html
http://theonlinephotographer.typepad.com/the_online_photographer/2012/09/dynamic-range-is-not-exposure-range-part-ii.html

Ctein also puts forward the notion that as many pixels comprise an image, it is theoretically possible for the exposure range to be higher than the dynamic range. He explains it in the second article. Interesting concepts. I am not sure how well it applies with RAW and raw editors these days...the expandibility of exposure range via dithering (which is effectively what Part II covers) is theoretically possible, but in my experience noise in the lower tonal range of a RAW image tends to have too high of a standard deviation to be effective as a medium for dithering. I've never used a top-end camera like the 1D X, however...perhaps its superior noise characteristics would.

jonathan7007 · Mar 12, 2013

Canon told me today tethered shoots have to go direct to the "C" drive...rather than a SSD on the laptop bus but not the C drive. That seems a little restrictive and nowhere mentioned in dialogs. I will look in the documentation...

I have been having tether trouble which now after the call and a card switch, may have been caused by a faulty Lexar 400x 64Gig UDMA7 CF card I recently bought. I would love to think my recent trouble in a liveView shoot was caused, too, by this card. On another nearby thread a 1Ds user said they have tens of thousands of LiveView shutter actuations with ZERO problems. Crossing my fingers that further testing today settles this.

Anyway, the C drive rule was a surprise.

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Locked Is micro adjust setting stored in the camera or lens?

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Locked How's the 70-300L?

Locked Poll Poll Which camera brand you actively use, other than Canon?

Which camera brand do you actively use, other than Canon?

Nikon

Sony

Sigma

Fujifilm

Leica

Samsung

Pentax

Olympus

Panasonic

Ricoh

Hasselblad or other medium format

Other (please specify)

I only use Canon

Locked 5DIII+35mm or 50mm？

Locked 5d3 Timelapse. Should i lock up the mirror?

Locked Question for techies, Port of call: 2.0 crop factor

Locked Inspirational

Locked New wide angle lens for FF

Locked 5D MK iii - Help a n00b select AF modes

Locked New Sigma 30mm f/1.4 DC HSM available for pre-order

Locked Best filter

Locked Poll Poll Which eye do you shoot with?

Which eye do you use to shoot?

Primarily left

Primarily right

Both (depending on the situation)

Mostly LiveView

Locked Canon EF 200 f/2L IS & EF 800 f/5.6L IS [CR2]

Locked The Next Rebel? [CR1]

Locked T-Stop Web Site listings

Locked In-camera noise reduction

Locked Added dandelion chips to my lensbaby and samyang 8mm

Locked How to Pre-Visualize like Ansel Adams

Locked best NON L long lens

Locked 24-70mm f/2.8L II or EF 24-70mm f/4L IS or EF 24-105mm f/4L IS at F9

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Resources on bottle photography

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How's the 70-300L?

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Poll

Which camera brand you actively use, other than Canon?

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5DIII+35mm or 50mm？

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5d3 Timelapse. Should i lock up the mirror?

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Question for techies, Port of call: 2.0 crop factor

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Inspirational

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New wide angle lens for FF

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5D MK iii - Help a n00b select AF modes

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New Sigma 30mm f/1.4 DC HSM available for pre-order

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Best filter

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Which eye do you shoot with?

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Canon EF 200 f/2L IS & EF 800 f/5.6L IS [CR2]

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The Next Rebel? [CR1]

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T-Stop Web Site listings

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In-camera noise reduction

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Added dandelion chips to my lensbaby and samyang 8mm

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How to Pre-Visualize like Ansel Adams

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best NON L long lens

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24-70mm f/2.8L II or EF 24-70mm f/4L IS or EF 24-105mm f/4L IS at F9

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Dynamic Range vs. Exposure Range, and why the difference matters

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Canon tells me tethered shoots have to go direct to the "C" drive