there seems to be an increasing trend of macro shooter within the pentax community... I am curious, so I thought of having some fun with it too. Sharing this out so that we all can learn together.
I just bought an K-mount extension tube from one of the ebay store for 20USD. Similar to my unbranded split screen (its working well), this is also one of the unbranded stuff from China. Initially, I thought that its some cheap skate plastic tube to do the extension trick. When I got the tube on friday, I find that all the five pieces of extension are quite well built. Full metal tube with tap screw threads. I wouldn't say that its anything of high precision, but its good enough not to have it struck in your camera bayont.
There are five pieces of metal parts, so that we can re-configure the length of the extension. the mount, the bayont, and three rings of different length.
WHY TUBE?
tube is a dirt cheap way to gain magnification factor without loosing/degrading image quality. The image quality will depend on the lens that you use with the tube. real macro lens is expensive, so it is naturally not within reach of everyone. Using close-up filter, teleconvertor will introduce glass element and degrade the picture to a certain point.
The tube allows me to go from minimum focusing distance of 45cm down to 10cm and below.. its interesting! BUT the downside of using tube is that the amount of light reaching the sensor is lesser and it will be difficult to take the snap handheld.
Here is how the tube looks..
all the five pieces...
some initial test with the tube... (all five pieces mounted with M50/1.7 )
( this one above, i stopped down and it takes 5sec, eeiii.. look at the dust! )
the life scale...
basically, the more tube you add, the closer and nearer you can get to your object...
cont..
I just bought an K-mount extension tube from one of the ebay store for 20USD. Similar to my unbranded split screen (its working well), this is also one of the unbranded stuff from China. Initially, I thought that its some cheap skate plastic tube to do the extension trick. When I got the tube on friday, I find that all the five pieces of extension are quite well built. Full metal tube with tap screw threads. I wouldn't say that its anything of high precision, but its good enough not to have it struck in your camera bayont.
There are five pieces of metal parts, so that we can re-configure the length of the extension. the mount, the bayont, and three rings of different length.
WHY TUBE?
tube is a dirt cheap way to gain magnification factor without loosing/degrading image quality. The image quality will depend on the lens that you use with the tube. real macro lens is expensive, so it is naturally not within reach of everyone. Using close-up filter, teleconvertor will introduce glass element and degrade the picture to a certain point.
The tube allows me to go from minimum focusing distance of 45cm down to 10cm and below.. its interesting! BUT the downside of using tube is that the amount of light reaching the sensor is lesser and it will be difficult to take the snap handheld.
Here is how the tube looks..
all the five pieces...
some initial test with the tube... (all five pieces mounted with M50/1.7 )
( this one above, i stopped down and it takes 5sec, eeiii.. look at the dust! )
the life scale...
basically, the more tube you add, the closer and nearer you can get to your object...
cont..
