Alley in Pisa, Italy

by Lars Kotthoff

submit your photo


Hall of Fame
View past winners from this year

Please participate in Meta
and help us grow.

5,753 reputation
1541
bio website sams.smugmug.com
location Mountain View, CA
age 35
visits member for 3 years, 9 months
seen yesterday

iOS engineer for SmugMug.com AND avid pro-am photographer.


Jul
18
comment Do film emulation presets assume a certain white balance setting?
Agreed. I would expect if I shoot with actual Portra 160 film, in different color temperatures, to result in different casts, and I'd expect a Portra 160 preset to do those same casts and thats what I want to happen. The problem is, as you see in my image example, the color cast isn't the same as actual Portra 160 film.
Jul
18
comment Do film emulation presets assume a certain white balance setting?
" it likely assumed the photo was taken using either Auto WB or a WB set to the actual temperature of the light" I think that is the problem, the preset assumes you shot in daylight WB (or corrected to daylight WB) where I expect it should behave like Portra film which just has a color shift if you're not in Daylight.
Jul
17
comment Do film emulation presets assume a certain white balance setting?
What do you mean by "It seems like you may have applied the same bias to the RAW data twice."?
Jul
17
comment Do film emulation presets assume a certain white balance setting?
@mattdm Thanks for the nudge, done! :)
Jul
17
revised Do film emulation presets assume a certain white balance setting?
added 324 characters in body
Jul
2
awarded  Curious
Jun
13
comment Do film emulation presets assume a certain white balance setting?
You're right, I need to post some examples, will do!
Jun
11
asked Do film emulation presets assume a certain white balance setting?
May
12
awarded  Enlightened
May
12
awarded  Nice Answer
Apr
24
comment What options are there for a camera that's smaller than a full DSLR, but not a point-and-shoot?
I like that your answer is trying to be general (thus useful in the future) by offering "types" of alternative cameras w/specific examples as a fallback.
Mar
25
revised I can't get my new 580ex ll external flash unit to work on my 60D
Grammar police
Mar
25
comment Are regular external HDDs durable enough to be taken in a photo bag?
Hugely agree w/a SSD being a better solution, especially if we're just talking about enough for a single adventure, not backing up your entire collection.
Mar
25
comment Are regular external HDDs durable enough to be taken in a photo bag?
To address the "rugged" moniker, this is generally in reference to extra padding/protection externally on the drive enclosure, the actual drive itself is no more rugged than another.
Mar
19
comment What is background compression?
Indeed, according to wikipedia en.wikipedia.org/wiki/Perspective_distortion_(photography) If you keep the FoV the same by changing your distance to the subject, you get different perspectives (compression)
Mar
19
comment What is background compression?
I don't think this is true, its not just the perspective that impacts compression it is determined by the lens, take this photo for instance which is a panorama stitched from many 800mm photos: smu.gs/1j7GObt. There is clearly a lot of compression going on despite being a very wide image, if you did this same shot as a single 21mm photo, it would look quite different.
Mar
19
comment What are the logistical pros and cons of traveling with a full size tripod?
I also always carry on my (full-sized CF) tripod and have never been asked to check it, even though it has rubber covered metal spiked feet :)
Mar
12
awarded  Nice Answer
Mar
11
comment Is there an advantage to choosing the Big Two (TM) entry level dSLRs over competititon?
Surprised this is closed as a dupe, the other question is worded (and is getting questions to the effect) that it doesn't answer this question at all. When answering a question of 'Why is X better than Y' you wouldn't reply with points explaining why Y is better than X which is what this question is asking. And, IMO, this question is a better way to phrase the question "Why choose the big brands over the other guys and vice versa"
Mar
7
comment If shooting in RAW and processing, why still care about WB?
Oh, I agree w/you there @mattdm, its mostly fine the vast majority of the time (I shoot AWB), I was just surprised to learn that it can still matter and I don't think many known about it. I've also heard (and can't find the page now) that Canon bodies apply an extra green filter if you use the Fluorescent setting that you don't get in AWB or if you use custom temp. So if you shot the same scene with Fluorescent and custom set to the same thing you'd actually get a different result :)