JRJacobs
Member
- Joined
- Feb 28, 2008
- Messages
- 238
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- Medium Format
Relax Doug, I am on your side. (Please note my comment about being impressed at the steadiness of your hands - i am truly impressed!) 
And, you are absolutely correct that a TLR can be handheld at slower speeds.
My point was in a more general kind of way that it would probably be better to use faster film if the light is that poor. For example, you may be able to handhold at 1/8th of a second, but you cannot guarantee that your subject matter (unless it is still life) will be stock still for a full 1/8th of a second also. Also, it can be risky to assume one can always get a sharp shot at 1/8th a second - even with steady hands it will not always work out (as you pointed out in your percentages) - so it is a risk.
My point is that instead of worrying about "can I handhold "X" camera at 1/8th scond", simply plan on using the correct speed of film for the type of light available.
One of the nicest things about my Hasselblad is that it has changable backs. So if I am shooting with 100 speed film and all of the sudden I am getting low light readings requiring 1/8th of a second, I can simply switch to my other back with TXP (which I rate at iso800). Then I do not have to worry about if I can handhold at 1/8th of a second. With a TLR, you are stuck with the same film speed until you finish your roll.

And, you are absolutely correct that a TLR can be handheld at slower speeds.
My point was in a more general kind of way that it would probably be better to use faster film if the light is that poor. For example, you may be able to handhold at 1/8th of a second, but you cannot guarantee that your subject matter (unless it is still life) will be stock still for a full 1/8th of a second also. Also, it can be risky to assume one can always get a sharp shot at 1/8th a second - even with steady hands it will not always work out (as you pointed out in your percentages) - so it is a risk.
My point is that instead of worrying about "can I handhold "X" camera at 1/8th scond", simply plan on using the correct speed of film for the type of light available.
One of the nicest things about my Hasselblad is that it has changable backs. So if I am shooting with 100 speed film and all of the sudden I am getting low light readings requiring 1/8th of a second, I can simply switch to my other back with TXP (which I rate at iso800). Then I do not have to worry about if I can handhold at 1/8th of a second. With a TLR, you are stuck with the same film speed until you finish your roll.