Alley in Pisa, Italy

by Lars Kotthoff

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visits member for 1 year, 7 months
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10h
comment What effects do different flash diffuser shapes have?
Also related: photo.stackexchange.com/questions/52887/…
2d
comment Facebook C2 on browsers versus other applications
There's a question in there?
Jul
22
revised Would Wi-Fi enabled SD cards affect battery performance?
minor reword to clarification and updated to include lexar.
Jul
21
answered Would Wi-Fi enabled SD cards affect battery performance?
Jul
21
comment Would Wi-Fi enabled SD cards affect battery performance?
Theoretically it should as the D90 has eye-fi support and that's older than the D7000. The manual will tell you what options are available.
Jul
19
answered Most effective directed speedlight diffusers?
Jul
19
comment How can I get perfect sharpness when shooting still art?
I'm noticing that the pieces do seem to have good sharpness in the colour image in the studio but lack contrast in the mono's (even those in the studio) which makes me wonder if the mono conversion process is killing quite a lot of contrast? What is your colour->mono process?
Jul
15
comment Dark zone appearing on pictures when using an external flash
Plus using flash as the primary light source for a scene (like in the example) will mean the exposure time will in practice be the flash duration and not the shutter time so going for a slower shutter and disabling HSS should give a sharper result due to the shorter flash duration.
Jul
11
comment Will any of these actions damage a tripod?
#4 addendum: The primary risk is more likely to be your head. :)
Jul
5
comment Can the method from the paper “High-Quality Computational Imaging Through Simple Lenses” compete with conventiona lenses?
I'm not sure the community would be able to provide any kind of canonical answer to this beyond "time will tell." My take is that such algorithms will improve in efficiency and increases in processing power (including dedicated hardware/asics) to process in a reasonable enough time and are more likely to become part of a post-process workflow on the basis that if they can provide significant improvements to 'poor' or simple lens designs then more complex/heavily engineered glass ought to benefit also.
Jul
3
comment Is a JPEG image uncompressed to bitmap prior to displaying it on the screen
Also a jpeg would have to be converted from the Y'CbCr colour system that it uses natively into RGB for display and the result of that transform has to be stored somewhere in memory. That doesn't have to be main memory it could be decoded and stored on the graphics card for example.
Jun
24
comment Why isn't saving photos as TIFF files a popular choice by DSLR manufacturers?
It can be 'group 3 fax' too IIRC which makes jpeg look highly desirable in image quality terms...
Jun
24
comment Why isn't saving photos as TIFF files a popular choice by DSLR manufacturers?
@akram - why manufacturers standardised on jpeg would make an excellent question on it's own. The short version is that it offered a good size reduction with an acceptable quality loss without needing too much processing when they were debating what formats to use - it was a bit of a no brainer at the time.
Jun
14
comment How much fluorescent/CFL power do I need?
Also relevant is: photo.stackexchange.com/questions/36158/…
Mar
11
comment What Canon full-frame lens should I get for product photography, toddler portraiture and travel photography?
In my experience (and I shoot kids a lot, not just mine but other people's) I find Image Stabilisation is generally useless around young children as the action you need to freeze is their movement rather than camera shake. Babies you can get away with it but once they're mobile only a faster shutter or flash (or both) will freeze the subject sufficiently.
Mar
10
comment What Canon full-frame lens should I get for product photography, toddler portraiture and travel photography?
The lens you need is this one. The answer Lens questions are probably the hardest gear recommendation questions to answer. will give you some background.
Mar
10
comment Is there a compact camera that offers secure deletion of pictures?
Thanks for coming back to us. It's nice to know what you actually decided to do.
Mar
10
comment Is there a compact camera that offers secure deletion of pictures?
While you can't do a secure delete on an SD card (as the card decides where a file goes and not the OS or device) you could store the files in an encrypted volume on the card which is then useless if recovered?
Mar
10
awarded  Organizer
Mar
10
revised HDR with movement
Minor language tweak