User talk:Diliff
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Archive 1 - (26th September 2005 to 21st April 2006)
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I recently started the Dermatology task force and want to create a subpage for the taskforce that addresses dermatologic photos, giving guidelines/recommendations for good images. On that page I was simply going to link over to Wikipedia_talk:Featured_picture_criteria, but also wanted to added a few comments specifically geared towards dermatologic photos (like something about always having a ruler, etc in the picture to keep size in perspective, etc.). I also found a paper online (see [1]) and thought I could integrate some of its pointers into the page. However, I am a dermatologist, not professional photographer, and therefore wanted to know if you, or any of your friends, would help me develop this page? kilbad (talk) 17:29, 28 February 2009 (UTC)
Millere08
I give you points for trying but I don't think we're going to be successful getting a response from him/her. As you're probably aware, he/she even ignored the {{inuse}} template that I added to one article and still refuses to use edit summaries, apart from the exceptionally rare justification of an edit. I just don't think he/she wants to collaborate. --AussieLegend (talk) 13:34, 1 March 2009 (UTC)
Re: ND filters again
I have put two linear polarisers together back in year 12 physics and works as described. The Phase detection autofocus systems that SLRs use won't work with polarized light so most photography filters consist of a linear polariser followed by a quarter-wave plate which gives circular polarisation to the output, allowing AF. Because of the quarter-wave plate you'd either have to have one filter back the front, using a reversing ring from ebay, or buy a linear polariser instead of a circular one as your second filter. I know you can buy linear polarising filters, but I don't know if you can get high quality multi-coated ones. In my limited experience you could probably get 2 or 3 ND filters for the price of a single high quality polariser, so it probably isn't worth it. Your polariser will generally knock out 1.5 - 2 stops of light, so combined with an 8x ND it should knock out enough in most situations. hvstar is a pretty cheap place to buy B+W or Hoya filters. Noodle snacks (talk) 02:50, 2 March 2009 (UTC)
- Oh, you will probably see it on the FPC talk page, but there is a way to view ultra wide panoramas correctly on wiki here is the demo. Noodle snacks (talk) 10:03, 2 March 2009 (UTC)
FP
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Nice work, by the way. Only actually been to Brighton once - it's just so far from Edinburgh and Wales and the other places I lived - but it brought back memories =) Shoemaker's Holiday (talk) 08:23, 4 March 2009 (UTC)
Congratulations!
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Congratulations!
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Jersey City Skyline Image
We would like to use your image on a postcard about living in Jersey City. Please contact me at your earliest convenience to ensure I understand how to livense it properly. Regards,
Katherine Hagemann 614-480-6410 katherine.hagemann@huntington.com —Preceding unsigned comment added by 170.128.175.210 (talk) 21:32, 9 March 2009 (UTC)
9/11 FPC
You do wonderful work, Diliff, and I greatly respect your contributions both as an editor and as a photographer. It really seems like the digression was not intended to give offense, but the sarcastic caption beneath the flag was unnecessary and inappropriate. Particularly in that context.
Suppose for a moment that any other country had been targeted and thousands of civilians killed. Would you even consider mocking its flag at the FPC for a memorial of the event?
I can't help where I was born, or what nationality came with that. There are people in the world who kill because of that. They nearly killed my uncle. A request for a dignified conversation on such a topic shouldn't even need to be made, much less explained. DurovaCharge! 03:04, 11 March 2009 (UTC)
- I never mocked your flag. That was Wadester that added the image and the caption, and I assume it was intended to be a joke in response to what I had said. What I did do was respond to Fletcher's question about bothered me about certain aspects of patriotism. As I said, I admit it was getting off-topic, but I certainly didn't mean to dishonour those who died or those who serve to protect the country. However, I was not singling out the US because I have some sort of inherent bias against it. I was singling out the illogic that many Americans have towards threats like that. Sure, there are individuals out there that wish you harm, but it clearly isn't because they're jealous of your freedom, and yet I hear countless speeches/interviews etc where people claim this, as if the US is truly more free than the vast majority of other western countries in the world. This just makes those who claim it to sound ignorant and arrogant and it irritates me. :-) It certainly doesn't mean I hate the USA or all of its inhabitants. It just means I see flaws where flaws exist, just as they exist in many other nationals of the world. Granted, it was not the greatest location for a soap box, but it was a response to a question asked during the course of the discussion, and not something that I just felt the need to announce for no particular reason. That said, I don't think anyone should be that sensitive that they cannot take any criticism of their nation and people. An extremely traumatic event like 9/11 shouldn't give people a license to spout whatever nationalist garbage they like without others picking apart the logic of it. I didn't actually feel that I was being that insensitive or disrepectful to the victims or the American people as a whole, though, but I suppose that there will always be somebody offended by something... Diliff | (Talk) (Contribs) 08:04, 11 March 2009 (UTC)
- And I never requested that you explain what you said. I knew perfectly well why you said it. I just felt that you bringing your uncle and your reasons for joining the navy up was equally irrelevant and unhelpful, and would only conspire to turn a philosophical argument into an emotional and personal one. Diliff | (Talk) (Contribs) 11:00, 11 March 2009 (UTC)
- It's a big leap from anything I've said to ...so sensitive that they cannot take any criticism of their nation and people. Nor was anyone spouting nationalist garbage. Photographically the image was mediocre. As you may have noticed, I opposed it as copyvio. Some of the sentiment you express about jingoism, etc. I actually agree with, but would not use a memorial to the victims as segue to such a discussion. When that sort of discussion does stray, it's no foul for an editor to post whoa, that hits home. You are a wonderful photographer and a fine Wikipedian. Let's keep FPC discussions topical, particularly when the subject matter is recent tragedy. DurovaCharge! 19:55, 11 March 2009 (UTC)
- And I never requested that you explain what you said. I knew perfectly well why you said it. I just felt that you bringing your uncle and your reasons for joining the navy up was equally irrelevant and unhelpful, and would only conspire to turn a philosophical argument into an emotional and personal one. Diliff | (Talk) (Contribs) 11:00, 11 March 2009 (UTC)
Dusk Images
Hey Diliff, I wanted to try to take a panorama of Dar es Salaam city with the sky colours similar to File:Sydney skyline at dusk - Dec 2008.jpg. Regarding the actual colour of the sky, I have only seen the pinkish colour sometimes. Did you just happen to be there at the right time or can the sky colour be forecast? Any other hints you can provide, as I will probably have only one attempt to get it right? Thanks --Muhammad(talk) 19:03, 11 March 2009 (UTC)
- It really just is luck, and of course timing as the light doesn't usually stay that way for long. I don't think the sky can really be forecast, although you can sometimes guess an hour or so before sunset if the conditions are likely to be good for a nice sunset. From my experience (I'm not really an expert!), usually high 'wispy' clouds tend to give nice sunsets. The key ingredient is some atmospheric condition (clouds, dust, etc) that allows the pink/red sunlight to bounce or diffuse through. Diliff | (Talk) (Contribs) 21:44, 11 March 2009 (UTC)
- Thanks. One more thing, whats the difference between exposure blending and HDR? --Muhammad(talk) 05:36, 12 March 2009 (UTC)
- Well, it is quite a complicated subject to explain in simple terms (the articles on HDR will do a much more detailed explanation, from memory), but I'll try. Both methods typically take a very wide dynamic range as in input. With exposure blending, you might take 3 exposures. -2 EV, 0 EV and +2 EV, and then use software which analyses the images and decides which parts of the image are most ideally exposed (for example the sky in the -2 EV photo will be a nice blue, but will probably be overexposed or even which in the +2 EV photo, but the shadows will be black in the -2 EV photo and correctly exposed in the +2 EV photo) and then combine all these parts into one photo. The end product is exposure blended. HDR is similar to that, except that instead of blending the multiple images into a single normal image file, it just combines the exposures into a file that is specially designed to handle many more luminosity levels. It can hold information on each pixel with extremely wide dynamic range. In other words, it can hold the information for very dark shadow with a luminosity of (for example) 100, and also hold information for a very bright light with a luminosity of 1000000 (this is also just an example). A normal 8 bit jpeg file can only store 256 possible values per colour channel (RGB) per pixel. A 16 bit file such as a TIF can store 65536 values, but it only gives you more variations within the same range, usually. In other words, it will allow smoother colour gradients, but it will still have the same limited dynamic range. But a HDR file is usually 32 bit, which means 4.2 billion values per pixel. What this means is that it can allow the image to still have a very smooth colour gradient but also expand the dynamic range almost infinitely, which means that it can store the luminosity values of just about any scene, no matter how dark or how bright! Of course, the problem is that a computer monitor cannot display the range that a 32 bit HDR file is capable of storing because it has a very limited range. So if you want to take a HDR image, you have to 'convert' it back to an 8 bit or 16 bit image that can be viewed on a monitor. That technique is similar to exposure blending, but it does it from the HDR file, instead of individual images. I'm not sure if this has only confused you more or not, but hopefully you can understand what I mean. It is very hard to explain with just words. I think it would help to use examples, diagrams, mathematics, etc :-)
- Let me summarise anyway: HDR images let you store very wide dynamic ranges in a file. Tone mapping 'compresses' the dynamic range down from a HDR file to a normal image (8 bit) file. Exposure blending lets you merge the 'correct' exposures from various images into one image without converting the file to HDR. Diliff | (Talk) (Contribs) 23:55, 12 March 2009 (UTC)
- Well, I understood most of it:P Reading it a couple of times should do the trick. Thanks for the help. --Muhammad(talk) 19:32, 13 March 2009 (UTC)
- Thanks. One more thing, whats the difference between exposure blending and HDR? --Muhammad(talk) 05:36, 12 March 2009 (UTC)
sydney opera house image
David,
As I am not quite sure how to read the user guidelines, I figured it would just be easier to ask you upfront. I am interested in using your image in print. The magazine is Today's Chiropractic LifeStyle and has a circulation of around 40,000 here in the U.S. The article in question is titled "Success from the Inside Out" and talks about inside success (personal) versus outside success (bragging rights, etc., so to speak). My idea is to feature a far-away place that's recognizable and in my search for Sydney images I came across yours, which is one of the best I've seen.
Let me know if I'm allowed to download this and give you photography credit, or if that is not permitted.
You can contact me via my email: katja@knowatlanta.com
Thank you in advance,
katja adams
69.15.2.93 (talk) 14:47, 16 March 2009 (UTC)
Using the picture
Hi Diliff,
I am interested in using your photograph of the Frauenkirche, Munich. I will be mixing it to adapt it to the style of the catalogue i am working on. Your name will be shown next to the image at 6pt font, in dark blue. Need I send you an image of how i am using it?
Plus I am a bit unclear as to how I may comply to the following term:
"As such, any reproduction of this image, in any medium, must appear with a copy of, or full URL of the license."
Please advise.
Beautiful beautiful picture.
Sincerely yours, Lenora Lin
lin.lenora@gmail.com —Preceding unsigned comment added by 122.118.36.120 (talk) 08:27, 18 March 2009 (UTC)
Hello, I work for a free learn-to-read website and educational publisher: Starfall.com. We are interested in using your sawfish image in a printed book that we're working on. We would be happy to list you as the photographer on our acknowledgements page in the book. Is this acceptable to you?
Looking forward to your response.
Faith Gowan (faith@sps.com)