where to get split focus screen for Pentax k-x in Singapore and how much;
also, if in the dark area, does that help much, as I found in the evening, taking photo of cats in dark is hard to focus, even with live view zoom.
---------------------updates-----------------
hi, thanks for all the information,
I found what I want from a Chinese seller in Guangzhou, china,
if you can read Chinese, and have a chance to fly to Guangzhou in China, you will be able to get it around 20 SGD the cheapest, or the K3 split type. (for my case, it is no problem for me, I think I will give the 20 SGD version a try later)
but after I read some more about split screen,
This split screen makers says,
even the best split screen won't work at aperture smaller than f4.5, f5.6 because of dim lighting;
thus, that means as long as light is dim, lack of contrast,
split screen won't work well, as the split difference of dim image is hard to tell.
So, split screen won;t help much for Photograph a Dark Cat under a Dark Tree shadow at a Dark night
while the K3 type split screen will still work a little better at small aperture, as it says "combination of all 3 types of light splitting optical design, good for heavy manual users",
-----------about live view based manual focus-----------------------
as the focal length smaller than 200mm, it is easy to hand-hold the manual lens,
thus the live view won't be Crazying Shaking, it is still reliable for live view to slowly manually aid the focusing with another hand
also live view works well as view finder magnification adder, (10x live view zoom)
but once the focus length larger than 400mm, (I tried) live screen is Shaking Crazy and Responds Very Slow for manual focus.
------------My Final Decision--------------------------------------
for focal length smaller than 135mm,
easy to hand hold, easy to use Live View for slow manual adjustment focusing;
for focal length larger than 400mm,
live view is shaking like no use,
split screen won't help much, as normal telephone lens is with aperture smaller than f5.6, some case work with f8
for macro lens at 90mm or so,
live view is also shaking like Crazy,
split screen will help quite a bit if you hand hold it.
but if your subject is not moving much, and you normally have much time to focus it right with tripod,
since it is still, then a right angle view finder with 3x mag will help even more for precision
I guess split screen is good for Fast manual focus at Bright sun day with Faster lens like f2.8
also, if in the dark area, does that help much, as I found in the evening, taking photo of cats in dark is hard to focus, even with live view zoom.
---------------------updates-----------------
hi, thanks for all the information,
I found what I want from a Chinese seller in Guangzhou, china,
if you can read Chinese, and have a chance to fly to Guangzhou in China, you will be able to get it around 20 SGD the cheapest, or the K3 split type. (for my case, it is no problem for me, I think I will give the 20 SGD version a try later)
but after I read some more about split screen,
This split screen makers says,
even the best split screen won't work at aperture smaller than f4.5, f5.6 because of dim lighting;
thus, that means as long as light is dim, lack of contrast,
split screen won't work well, as the split difference of dim image is hard to tell.
So, split screen won;t help much for Photograph a Dark Cat under a Dark Tree shadow at a Dark night
while the K3 type split screen will still work a little better at small aperture, as it says "combination of all 3 types of light splitting optical design, good for heavy manual users",
-----------about live view based manual focus-----------------------
as the focal length smaller than 200mm, it is easy to hand-hold the manual lens,
thus the live view won't be Crazying Shaking, it is still reliable for live view to slowly manually aid the focusing with another hand
also live view works well as view finder magnification adder, (10x live view zoom)
but once the focus length larger than 400mm, (I tried) live screen is Shaking Crazy and Responds Very Slow for manual focus.
------------My Final Decision--------------------------------------
for focal length smaller than 135mm,
easy to hand hold, easy to use Live View for slow manual adjustment focusing;
for focal length larger than 400mm,
live view is shaking like no use,
split screen won't help much, as normal telephone lens is with aperture smaller than f5.6, some case work with f8
for macro lens at 90mm or so,
live view is also shaking like Crazy,
split screen will help quite a bit if you hand hold it.
but if your subject is not moving much, and you normally have much time to focus it right with tripod,
since it is still, then a right angle view finder with 3x mag will help even more for precision
I guess split screen is good for Fast manual focus at Bright sun day with Faster lens like f2.8
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