I used to love my CP4500 and still think the IQ is great - but as we all know, it has it limitations.
I started to use a DSLR body and the EP projection technique, but deep down, I always wanted a better digiscoping camera without all the weight and complexity of the enormous DSLR. Also I was happier using the DSLR with a 400mm prime and so my digiscoping system never seemed to have a camera ready for it.
I tried digiscoping with my wife's Ixus camera, the one with x4 zoom and the small sensor (smaller than the A640) and found it interestingly good.
The A570 IS seemed to have the same small sensor and the same lens, so I decided to try one. The A570 IS is at cheaper end of the spectrum and has some useful features including optical image stabilization, aperture priority, manual focus, AA batteries, 2 frames per second continuous shooting - until the card is full, lightweight, the new Digic III processor and the option of taking additional lenses.
Together with the camera I bought the LA-DC52 adaptor, a fairly unpleasant bit of plastic with a crude bayonet fitting to the camera and a 52mm thread at the end. Into this thread I screwed a 52 to 46mm step down ring, and then a 46 to 43mm ring, allowing the whole thing to be attached to the 43 mm thread on the end of my Hyperion 21mm EP.
The set up was Pentax PF100 ED with Hyperion EP and the A570 IS.
The set up is pretty critical on getting the camera position just right, too close or too far from EP to camera and there is considerable vignetting. I found that I needed to add a 2.5 mm spacer washer between the EP and the 43mm thread on the adapter.
The photos below show an oystercatcher digging for leather jackets (see bill in the second photo) from my lawn. The range was about 65 metres.
The photos are at focal lengths 5.8mm, 23.2mm, the extremes of the zoom and 12.3mm, about mid way.
There is slight vignetting on the shortest focal length, but the others are pretty clean - see for yourself. The last picture is my trusty test target at about 260 metres for this camera position.
I should add that these are not crops but the entire picture resampled down to 800x600 using the FastStone software.
The auto-focus is seemingly instananeous and the camera really responsive.
There are lots of in-camera adjustments possible - I've only just begun to play and I'm finding it the answer to my present needs.
OK, the screen does not tilt, which is a pain when using a straight through 'scope but that's the only real gripe. The camera uses only 2 AA batteries, so battery life is not brilliant, but there is an external DC input that takes 3.5VDC.
Just need to figure out some cable release adaption and I'll be ready for anything - having said that, the IS system really does seem to help get reasonable shots most everytime.
Review screen refreshes as fast as you shoot, so you can keep your eye on the bird as you blast away on continuous shooting.
I have found my CP4500 replacement and unlike the reports I've read on its bigger brother the A640, this one seems like a really great 7 megapixel option for digiscoping.
The A570 IS is wonderful - at least for me.
I'll let you know how it continues but so far, it's a total winner.
possum
I started to use a DSLR body and the EP projection technique, but deep down, I always wanted a better digiscoping camera without all the weight and complexity of the enormous DSLR. Also I was happier using the DSLR with a 400mm prime and so my digiscoping system never seemed to have a camera ready for it.
I tried digiscoping with my wife's Ixus camera, the one with x4 zoom and the small sensor (smaller than the A640) and found it interestingly good.
The A570 IS seemed to have the same small sensor and the same lens, so I decided to try one. The A570 IS is at cheaper end of the spectrum and has some useful features including optical image stabilization, aperture priority, manual focus, AA batteries, 2 frames per second continuous shooting - until the card is full, lightweight, the new Digic III processor and the option of taking additional lenses.
Together with the camera I bought the LA-DC52 adaptor, a fairly unpleasant bit of plastic with a crude bayonet fitting to the camera and a 52mm thread at the end. Into this thread I screwed a 52 to 46mm step down ring, and then a 46 to 43mm ring, allowing the whole thing to be attached to the 43 mm thread on the end of my Hyperion 21mm EP.
The set up was Pentax PF100 ED with Hyperion EP and the A570 IS.
The set up is pretty critical on getting the camera position just right, too close or too far from EP to camera and there is considerable vignetting. I found that I needed to add a 2.5 mm spacer washer between the EP and the 43mm thread on the adapter.
The photos below show an oystercatcher digging for leather jackets (see bill in the second photo) from my lawn. The range was about 65 metres.
The photos are at focal lengths 5.8mm, 23.2mm, the extremes of the zoom and 12.3mm, about mid way.
There is slight vignetting on the shortest focal length, but the others are pretty clean - see for yourself. The last picture is my trusty test target at about 260 metres for this camera position.
I should add that these are not crops but the entire picture resampled down to 800x600 using the FastStone software.
The auto-focus is seemingly instananeous and the camera really responsive.
There are lots of in-camera adjustments possible - I've only just begun to play and I'm finding it the answer to my present needs.
OK, the screen does not tilt, which is a pain when using a straight through 'scope but that's the only real gripe. The camera uses only 2 AA batteries, so battery life is not brilliant, but there is an external DC input that takes 3.5VDC.
Just need to figure out some cable release adaption and I'll be ready for anything - having said that, the IS system really does seem to help get reasonable shots most everytime.
Review screen refreshes as fast as you shoot, so you can keep your eye on the bird as you blast away on continuous shooting.
I have found my CP4500 replacement and unlike the reports I've read on its bigger brother the A640, this one seems like a really great 7 megapixel option for digiscoping.
The A570 IS is wonderful - at least for me.
I'll let you know how it continues but so far, it's a total winner.
possum
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