Posts for: enygy
Oct 5, 2018 22:00:43 #
Thanks everyone, for your nice comments.
much appreciated!
much appreciated!
Oct 5, 2018 21:58:57 #
Another nice series sippyjug!
while I hate them as "pests" I love green bottle flies as subjects...abundant, cooperative and beautiful in color and detail. Yours is a terrific picture with beautifully crisp sharpness of all the details of the insect.
thanks for sharing.
while I hate them as "pests" I love green bottle flies as subjects...abundant, cooperative and beautiful in color and detail. Yours is a terrific picture with beautifully crisp sharpness of all the details of the insect.
thanks for sharing.
Oct 5, 2018 21:52:33 #
Oct 5, 2018 21:51:33 #
Great shots. Will have to learn how to focus stack sometime!
Oct 5, 2018 21:49:16 #
Wonderful series...well shot and you have a great eye for finding interesting subjects.
Love them all but the midge (#4?), the tiny pea and the last one are all special. I have those last two nearby here as well on Long Island.
Love them all but the midge (#4?), the tiny pea and the last one are all special. I have those last two nearby here as well on Long Island.
Oct 4, 2018 14:32:11 #
Nice shots, I especially like the lighting and composition of the first one.
Oct 4, 2018 04:37:14 #
Oct 3, 2018 17:11:54 #
A variety of subjects, with a couple of different lenses today.
Oct 3, 2018 17:04:13 #
Not scientific but I put a bit of light absorbant material in the 28mm extension tube and took some shots with a reversed 50mm lens.
The shots with the reversed lens and tube regularly show a haze, although it is sometimes less obvious.
The reversed lens by itself can be very sharp and clear. I'll put a couple of other images in another post.
My guess is the problem is the extra light bouncing around between the lens and the sensor. With the tube, less of the light transmitted by the lens hits the sensor, ie more bounces around inside. As Nikonian72 pointed out, the reversed lens is not designed for this use and so probably lacks adequate baffles etc, letting in more stray light than the system can handle.
The inside of the extension tube was not completely covered by the absorbant material, I am going to try to cover as much of the surface as possible with either flat black paint or something else to see if that helps.
Summarizing - its not light leak, and its not the reversed lens itself.
Thanks all for the advice!
The shots with the reversed lens and tube regularly show a haze, although it is sometimes less obvious.
The reversed lens by itself can be very sharp and clear. I'll put a couple of other images in another post.
My guess is the problem is the extra light bouncing around between the lens and the sensor. With the tube, less of the light transmitted by the lens hits the sensor, ie more bounces around inside. As Nikonian72 pointed out, the reversed lens is not designed for this use and so probably lacks adequate baffles etc, letting in more stray light than the system can handle.
The inside of the extension tube was not completely covered by the absorbant material, I am going to try to cover as much of the surface as possible with either flat black paint or something else to see if that helps.
Summarizing - its not light leak, and its not the reversed lens itself.
Thanks all for the advice!
Oct 2, 2018 12:13:16 #
Thanks to everyone for the useful, and thoughtful remarks.
Many things to consider as possibilities. I will try to do a scientific study over the next few days when I can find the time.
Brenda, one quick study was to test your idea of light leakage. Lens and extension tube on, with the lens capped at the "front"...ie no light should be coming into the sensor...and the image is totally dark. So light leakage through the joints is not the problem. But thanks for the suggestion.
Many things to consider as possibilities. I will try to do a scientific study over the next few days when I can find the time.
Brenda, one quick study was to test your idea of light leakage. Lens and extension tube on, with the lens capped at the "front"...ie no light should be coming into the sensor...and the image is totally dark. So light leakage through the joints is not the problem. But thanks for the suggestion.
Oct 2, 2018 12:00:12 #
Love the orange wasp, really a spectacular find!
Both nicely shot too.
Both nicely shot too.
Oct 1, 2018 18:05:19 #
Thanks tinusbum, but the lens is clean and I have never had this problem with the same lens without extension tubes.
Oct 1, 2018 17:52:05 #
imagemeister wrote:
thanks imagemeister. That is good to know.Yes, this is a very good chance ......which is why bellows are preferred.
Oct 1, 2018 17:37:07 #
I got some extension tubes (inexpensive Fotodiox) to go with the manual 50 mm lens I have been using in reverse.
But in trying it out I seem to get some ghosting in the photos.
Attached is a quick one of some black rice, with the smudge pretty evident throughout. No, it is not on the lens.
This one was shot with the sun to my right coming over my shoulder so it doesn't seem like it would be lens flare.
I am wondering if the inside of the tubes are too shiny and need a matte black finish to cut down on internal reflections. The inside has the usual ridges, but is a glossy black.
Can anyone offer an explanation/solution for this?
But in trying it out I seem to get some ghosting in the photos.
Attached is a quick one of some black rice, with the smudge pretty evident throughout. No, it is not on the lens.
This one was shot with the sun to my right coming over my shoulder so it doesn't seem like it would be lens flare.
I am wondering if the inside of the tubes are too shiny and need a matte black finish to cut down on internal reflections. The inside has the usual ridges, but is a glossy black.
Can anyone offer an explanation/solution for this?
Sep 30, 2018 21:15:08 #
fabulous shots - great lighting, contrast and detail. So good it you make it seem easy, but its not!