CamaroX84
TPF Noob!
- Joined
- Aug 4, 2015
- Messages
- 2
- Reaction score
- 1
- Can others edit my Photos
- Photos OK to edit
I have a Nikon D3100 with the 18-55mm DX lens. From what I can tell from reading this forum and other places, a normal (not wide angle or telephoto) focal length is equal to the diagonal dimension of the sensor. For a DX sensor, this should be about 30 mm.
When I look through the view finder with the lens set at 30 mm, it appears to be more wide angle (or zoomed out). If I set it at around 50 mm, it seems like I am just looking through the view finder without any "zoom" at all. In other words, if I keep both eyes open, I don't see any zoom effect through the lens when set at 50 mm, but there is an effect at 30 mm, which should be the normal focal length.
Does a normal focal length correlate with how it looks through the view finder like I am describing? Or am I misunderstanding the concept?
The reason I am inquiring about this is because the photos I take need to be as "normal" as possible. I am an accident investigator and the photos should show distances between objects with as little distortion as possible.
Thanks in advance!
When I look through the view finder with the lens set at 30 mm, it appears to be more wide angle (or zoomed out). If I set it at around 50 mm, it seems like I am just looking through the view finder without any "zoom" at all. In other words, if I keep both eyes open, I don't see any zoom effect through the lens when set at 50 mm, but there is an effect at 30 mm, which should be the normal focal length.
Does a normal focal length correlate with how it looks through the view finder like I am describing? Or am I misunderstanding the concept?
The reason I am inquiring about this is because the photos I take need to be as "normal" as possible. I am an accident investigator and the photos should show distances between objects with as little distortion as possible.
Thanks in advance!