Alley in Pisa, Italy

by Lars Kotthoff

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5,567 reputation
616
bio website pfarrell.com
location outside Washington DC
age 63
visits member for 2 years, 5 months
seen Jun 30 at 2:57

Programming since punched cards


May
14
comment Do I risk damaging my camera if I use an aftermarket AC adapter?
"any risk" is too subjective to be a good SE topic. All of life is a risk. There is a non-zero risk of damage from Canon branded stuff, let alone nameless clones. Are you really able to objectively evaluate the risk? Do you expect us to evaluate it for you?
May
10
comment What is the Canon 50d made from?
As others have said, the frame is alloy. What, exactly, do you mean by "primarily"? By weight? by volume? By what you can touch? Why is this important to you? The 50D is a 6 or 7 year old design. I love mine, but they are only sold on the used market.
May
9
comment Why do Canon EF and EF-S lenses exhibit the same crop factor?
You are confusing things. From the same tripod location, the same 70mm lens will take the same image. Consider a photo of a person. Their head might take up all of an APS-C sensor, and only a very small part of a medium format image/sensor. On the medium format, it will probably be at least a 3/4 shot, due to the larger sensor. But the subject's head will be exactly the same size in all formats.
May
7
comment What makes sound in a DSLR camera?
DSLRs have lots of big parts that move and make noise. The mirror is the worst. I've never seen a credible way to lower the real noises that keep the full functionality. So for quiet shooting, don't use a DSLR. The noise from a flash recharging its cap is the vibrations of the switcher circuit that converts 5v to 300v that the main capacitor needs.
May
7
comment What makes sound in a DSLR camera?
The Fukifilm X100s is getting rave reviews for its silent operation. It has a control for an electronic sound that can mimic a loud shutter, because the actual camera is silent. Thus, the real answer is don't use a DSLR.
May
6
comment Why is the Canon Digital Rebel XT so loud?
The XT is built to meet a very low price. It has nothing it doesn't need. A nice way to quiet it is to use a 50D or 60D
May
1
comment How was contrast increased back in the film days?
Do you want to know how to change it after the photo is taken? One of the big reason to select different films is to get different contrast ratios (which comes along with different ASA speeds)
May
1
comment upgrading from kit lens
This answer is all opinion. "Horrible" and "optics... as good as a L series" need references or substantiation.
Apr
28
comment Does the setup of Vivitar 283 flash with radio triggers work with Sony NEX 6?
Good approach. Normal problem solving would be to just use a PC-sync cable and make sure that works. Remove triggers from path. But you really need a voltage isolator, like bhphotovideo.com/c/product/245292-REG/…
Apr
27
comment What do you take on a hike as a landscape photographer?
Here is an article: photographylife.com/how-to-use-a-monopod and a video youtube.com/watch?v=1KfR8mM4dtI One huge advantage of the X100s is that it has no mirror flapping up and down, so you can hand hold it with much better results.
Apr
27
comment What do you take on a hike as a landscape photographer?
Not 100%, but often 98% or more. Of course, if the goal is a particular shot from a place that requires a hike, take what you want. Or rent a helicopter. I read the @OP as taking a hike and wanting to record the great views.
Apr
27
comment Is there any downside to using a knock-off lens hood?
From @D34F's post, I was thinking printing on a Makerbot or other 3D printer. Had to follow the link to see its using paper. I bet a Makerbot could print one fairly cheaply and with next to no material costs.
Apr
20
comment What to do when all the display elements are stuck on on my Canon XT LCD and viewfinder displays?
I prefer a local camera store, as you can test it right there in the store. Check keh.com for prices.
Apr
19
comment When focusing at max zoom, focus is lost after zooming out. Is that normal?
is 100% correct. Interesting story on lensrental about a 70-200 lens that is Parfocal, its only $20K lensrentals.com/blog/2013/04/…
Apr
19
comment What is the best way to photograph a marathon?
You can practice on any road race, a local 5K or 10K, etc.
Apr
19
comment How do you replace a tripod leveling ball's tension bar?
The key is to hold the locking handle from turning. The ViseGrip will bite into the threads of the stud for grip. It will destroy the threads, but you won't use them, that's what the replacement part is for.
Apr
17
comment Could the Nikon V1 be a good camera for sports photography?
"Good enough at all" is subjective and relative. I can't read the OP's mind. But I can say that for basketball and volleyball, they are played in dingy gyms and you need every bit of speed from your lenses and sensor that you can get. Part of the problem is that folks often are not serious hobbyests, as they shoot their kids or relatives in high school. These gyms are terrible. Same with high school football fields.
Apr
16
comment Are Manfrotto tripod bases for video compatible with the photo line of heads?
Said 1/4 to 3/8 adaptors are also very inexpensive. Well under $10, maybe even under $2.
Apr
15
comment Does the Canon M have actual, significant deficiencies vs. the competition?
my opinion is that both Canon and Nikon have carefully positioned their mirrorless cameras down to avoid eating their low end DSLR lines. Fuji and Olympus don't have any significant low end DSLR models to protect. Only my analysis.
Apr
15
comment Will my SB-600 work off camera with any camera?
"all cameras" is very hard to say, but "most" will be fine. Some Minolta bodes have a strange hotshoe, and you need either a special flash, or an adaptor. Since Sony bought Minolta, some of their models use the strage, Minolta-style shoe.