Photography Weekly Newsletter - Wednesday, October 29, 2014

Top new questions this week: Considerations for Photographing a Nude Wedding I'm an amateur photographer that has helped out on a couple of wedding shoots for friends and family. I've been approached by someone looking for a photographer willing to shoot a nude wedding. I have ... [wedding] [nude-photography]   asked by Jazza 5 votes answered by jdlugosz 5 votes Prevent Yellowing Under High Intensity Discharge Lights I am photographing plants that are grown in a greenhouse. The plants are grown under High Intensity Discharge Lights, specifically Metal Halide and/or High Pressure Sodium. When I photograph these ... [color-correction] [color-filters] [hid-lights] [artificial-lighting]   asked by Lynda 3 votes answered by MichaelT 5 votes What is the benefit of a wide-aperture lens if you stop it down? As an example, say you have two lenses: 300mm, f/2.8 being used at f/8 300mm, f/4 being used at f/8 My understanding is that by definition the amount of light coming through the aperture means that ... [aperture] [wide-aperture]   asked by youcantryreachingme 3 votes answered by Matt Grum 14 votes What is development by inspection (DBI) and how is it done? While reading this answer I noticed the DBI concept. If I understand correctly, the idea is to develop a film while being able to see the progress (and apply the fixer once you're happy with the ... [film] [developing]   asked by Roflo 3 votes answered by Iliah Borg 5 votes Why is there no image noise in my webcam dark frame photographs? I'm trying to take some timelapse photos with a webcam. To reduce noise, I'm trying to take a dark frame. However, with the lens covered up totally, there is absolutely no noise in the image. The ... [noise] [webcam]   asked by user288121 3 votes answered by Michael Clark 2 votes RF Flash triggers and transmitters I am still at a very basic level with flash photography. I have some questions: What is the difference, if any, between a trigger and a transmitter? Does the transmitter send more info to the remote ... [flash]   asked by az1mov 3 votes answered by inkista 6 votes What happened to group C? I recall reading about A, B, and C groups where A:B is adjusted as a ratio but C (meant for backgrounds) is always fixed. Trying wireless flash with my Canon 70D and two flashes, I don't see any C ... [canon] [lighting] [wireless-flash]   asked by jdlugosz 2 votes answered by Richard Smith 0 votes Greatest hits from previous weeks: How to reduce file size without losing quality or resolution? I have 2,300+ pictures that I want to transfer to my phone but on their original size they take up a lot of space (6.44gb) I would like to trim is down to without sacrificing quality or resolution. I ... [image-quality] [resolution] [file-size]   asked by bran 5 votes answered by bran 1 vote What is back-focusing? What is back-focusing? Is it something I need to be worried about, or can I just live with it? How can I tell if my camera/lens is sufferring from it? [lens] [autofocus] [focus] [back-focus] [depth-of-focus]   asked by Edd 28 votes answered by Guffa 21 votes Can you answer these? Can I fix a M42 50mm lens myself? I've been using the Pentacon 50mm f1.8 with pleasure on my Canon 550D with the help of a M42 to EOS adapter. Some weeks ago however the lens housing got damaged in my luggage such that turning the ... [lens] [repair] [50mm] [m42]   asked by Bart Arondson 1 vote DNG updates settings in the file itself? I do know that fiddling with stuff in LR is non-destructive to the original raw data, as only the settings themselves are changed. With CR2 files, LR writes an XML file with the same base name, and ... [lightroom] [dng]   asked by jdlugosz 1 vote

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