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| bio | website | bitdepth.thomasrutter.com |
|---|---|---|
| location | Australia | |
| age | 32 | |
| visits | member for | 2 years, 3 months |
| seen | 6 hours ago | |
| stats | profile views | 121 |
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Apr 8 |
answered | Help with Blurry pictures |
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Apr 8 |
comment |
Help with Blurry pictures Another question, when you say it is on auto, is this the M/A switch on the lens itself, or the dial on the camera? It's the switch on the lens itself that is relevant here. |
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Apr 8 |
comment |
Help with Blurry pictures The reason we need an example photo is that there is more than one type of blur, and looking at an example photo would probably tell us which type of blur it is instantly. Types of blur include: focus not on subject; subject motion blur; camera shake; and more. |
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Apr 8 |
comment |
Incorporating haze into landscapes My intention wasn't to minimise or remove the haze, but give tips on how to improve his photos. In my opinion, my tips (particularly the first two) should enhance the look of the haze in the photo. |
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Apr 8 |
answered | What are ED elements? |
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Apr 8 |
comment |
What are ED elements? ED doesn't reduce colour fringing simply because it's low dispersion: it reduces colour fringing because it can be used in conjunction with other lens elements of different dispersion to cancel out, or adjust for, the effects of colour fringing. |
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Apr 8 |
answered | Incorporating haze into landscapes |
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Apr 8 |
comment |
Do all types of paper of the same weight have the same thickness? All this seems factually correct (including the bit about A0 being 1 square meter) but doesn't answer the question, which is about thickness. |
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Apr 8 |
answered | Do all types of paper of the same weight have the same thickness? |
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Apr 5 |
comment |
Should I buy a Canon 70-300mm f/4-5.6 IS or 70-200 f/4 L USM (without IS) for a wildlife safari? Well with only 3 oz (85g) difference that would probably just cement my decision. Ahmed, pay attention also to Michael Clark's answer because his answer raises some good points too. |
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Apr 4 |
comment |
Should I buy a Canon 70-300mm f/4-5.6 IS or 70-200 f/4 L USM (without IS) for a wildlife safari? "IS is good for 2-4 stops on most Canon lenses" is something that lens manufacturers say. It doesn't actually give you 2-4 stops, obviously, because the lens aperture is unaltered. However, if your subject is not moving fast (which eliminates sports/kids/animals) and you're standing still and at least trying to hold the camera still, then it can give you maybe 2 stops worth of stabilisation, which is great, don't get me wrong. But only within that limited set of situations, it's not comparable to 2-4 stop upgrade in the aperture. |
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Apr 4 |
comment |
Should I buy a Canon 70-300mm f/4-5.6 IS or 70-200 f/4 L USM (without IS) for a wildlife safari? Very good point about getting a prime lens. But what about a prime telephoto for a little teeny bit more reach - something like a 135/180mm at f/2.0 or f/2.4? |
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Apr 4 |
comment |
Should I buy a Canon 70-300mm f/4-5.6 IS or 70-200 f/4 L USM (without IS) for a wildlife safari? You saying the IS is better than an extra stop of light gathering ability? The latter will allow you to double the shutter speed. |
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Apr 4 |
answered | Should I buy a Canon 70-300mm f/4-5.6 IS or 70-200 f/4 L USM (without IS) for a wildlife safari? |
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Apr 4 |
comment |
Where can I find good post-processing examples with original RAW files? @mattdm I just interpreted his use of the word "professional" to mean "not crap"/"not a typical facebook/instagram snapshot". Ie a decently focused, composed image of an interesting subject with someone who knows their equipment. I didn't interpret as drawing a line between people who earn a primary income from photography and those who don't. |
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Apr 4 |
comment |
Are 2 megapixels enough for HD resolution pictures? You would be right. Demosaicing algorithms, in order to detect patterns, need to take into account a range of surrounding pixels when doing their calculation. It's also why demosaicing algorithms in-camera tend to crop a few pixels off the edge of the image - the edge would confuse the simpler, embedded demosaicing algorithm. |
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Apr 4 |
comment |
Are 2 megapixels enough for HD resolution pictures? If you mean 2x2, then that is the effective assumption, yes. It's based on the 2x figure being the minimum required downsampling from the original data to totally eliminate any need to interpolate. I'm not asserting that every 2x2 group of bayer pixels stores no more information than a single RGB pixel, however. |
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Apr 4 |
comment |
Are 2 megapixels enough for HD resolution pictures? @MichaelClark you would preserve a lot more detail by 50% downsampling the 3840x1216 demosaiced image than by having a 1920x1080 demosaiced image because the former sensor is able to capture much more detail in the first place. The downsampling would effectively combine the samples from each RGGB square (or at least it could, with the right algorithm, because the information is there - with a 1920x1080 Bayer sensor it can't). |
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Apr 4 |
comment |
Are 2 megapixels enough for HD resolution pictures? @mattdm the 2x figure is simply based on the minimum required downsampling to totally eliminate any effect of interpolation. You are correct that the Bayer filter does not completely halve the effective resolution of the resulting image - it preserves more detail than that. But to fully eliminate it from having any interpolation effect requires to halve the resolution. |
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Apr 4 |
revised |
Are 2 megapixels enough for HD resolution pictures? added 55 characters in body |
