Sent my A7r3 to Life Pixel for conversion, Daniel Morrison couldn't do it in time for my trip to Africa next month (he's away for a while).
While waiting, I would like to get the IR cut filters. I will need both 77mm and 82mm sizes.
These large filters are not cheap of course. Given that there are variable IR wavelengths they cut off, what would be the most useful range or number to get? The options are 590nm, 665 or 650 nm, 770nm and similar numbers.
I am quite confused as to what to get.
Basically what I would like to do is
1. standard IR photography of African vistas and wildlife when the right composition or subject presents itself.
2. Improved B&W imaging of everything
Towards this end, I've asked for a 'full spectrum' IR conversion on the camera. This, from my understanding gives me the most flexibility. However, if I want to make really sharp monochrome (not IR) images, I will need to put a filter on the lens to cut off the IR part of the spectrum so as to not overload the sensor and also to allow better focusing of the light overall and enhance resolution. And this is where I am stuck, what part of the IR should I cut off? And is there a difference between the B&W type where the light (IR) is eliminated by interference, or the type (Kolari) where it is absorbed, thus eliminating issues with wide-angle lenses.
I am not very good with my hands in the field and definitely do not want to fiddle with internal (over the sensor) filters, so whatever I get will have to go over the lens in the front.
Requesting Vivek and others here to please 'shed some light' on this issue for me.
Finally, what brand to consider?
Thanks.
While waiting, I would like to get the IR cut filters. I will need both 77mm and 82mm sizes.
These large filters are not cheap of course. Given that there are variable IR wavelengths they cut off, what would be the most useful range or number to get? The options are 590nm, 665 or 650 nm, 770nm and similar numbers.
I am quite confused as to what to get.
Basically what I would like to do is
1. standard IR photography of African vistas and wildlife when the right composition or subject presents itself.
2. Improved B&W imaging of everything
Towards this end, I've asked for a 'full spectrum' IR conversion on the camera. This, from my understanding gives me the most flexibility. However, if I want to make really sharp monochrome (not IR) images, I will need to put a filter on the lens to cut off the IR part of the spectrum so as to not overload the sensor and also to allow better focusing of the light overall and enhance resolution. And this is where I am stuck, what part of the IR should I cut off? And is there a difference between the B&W type where the light (IR) is eliminated by interference, or the type (Kolari) where it is absorbed, thus eliminating issues with wide-angle lenses.
I am not very good with my hands in the field and definitely do not want to fiddle with internal (over the sensor) filters, so whatever I get will have to go over the lens in the front.
Requesting Vivek and others here to please 'shed some light' on this issue for me.
Finally, what brand to consider?
Thanks.