valdas
Veteran
There are conflicting "expert" opinions on what is the fixed focus distance of Widelux lens. Some say it is 10 or 11 feet, in other places it says 5 meters (more than 16 feet). Any reliable source?
sleepyhead
Well-known
I used a F8 for a few years. I remember the focus point being around 2.5-3 meters.
valdas
Veteran
I'll probably need to do some testing. From my pictures @2.8 I can judge it's probably around 3 meters. It does not matter in most of cases, unless shooting wide open at close distances - then 3 or 5 is quite a difference.
voltrader66
Member
I think the lens is 26mm with fixed focus set at 26ft. This would be the hyperfocal distance at f/2.8. Using an app called SetMycamera, I get the following:
f-stop/near focus(ft)
2.8/12
4.0/10
5.6/8
8.0/6.4
11.0/4.9
However I have had reasonably in-focus pictures at distances slightly less than these. Down to 4ft at f/11 for example.
f-stop/near focus(ft)
2.8/12
4.0/10
5.6/8
8.0/6.4
11.0/4.9
However I have had reasonably in-focus pictures at distances slightly less than these. Down to 4ft at f/11 for example.
pagpow
Well-known
The Widelux 6 did not set their focus at the hyper focal distance of the lens at f2.8. Handwritten notes in my Widelux 6 IB do not show the fixed focal point, but do show the range for each of the stops:
2.8 4'11" to 49'2"
4 4'3" to 65'7"
5.6 3'4" to 98'5"
8 2'7" to inf
11 2'4" to inf
perhaps that will allow someone to calculate the fixed focus point. Note that the widely does not focus infinity until f8.
I do not have the source of this figures written in my IB. I also have a vague memory of the focus point being changed in the later models, but I cannot now confirm this and may be confusing the change in focus point among Wideluxes (possible and unverified) with the difference in focus point between Widelux and Horizon(t).
2.8 4'11" to 49'2"
4 4'3" to 65'7"
5.6 3'4" to 98'5"
8 2'7" to inf
11 2'4" to inf
perhaps that will allow someone to calculate the fixed focus point. Note that the widely does not focus infinity until f8.
I do not have the source of this figures written in my IB. I also have a vague memory of the focus point being changed in the later models, but I cannot now confirm this and may be confusing the change in focus point among Wideluxes (possible and unverified) with the difference in focus point between Widelux and Horizon(t).