ken
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Posts posted by ken
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$700USD and not even ended yet! The world's gone mad.
I actually really like those flares. particularly when he closes down the aperture. Begging for a little ff58 with a 3x oval on the back of it.
How are you finding the moondog?
official website
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Hi all, this lens is on ebay, will be sold soon, but now still have chance.
http://www.ebay.com/itm/201442686654
BTW, I am currently using moondog lens for my iphone. So don't need other 1.33x lens.
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IMO, for closer focusing, it is not much useful. The ratio would drop too (might down to 1.6x), also difficult to get sharp image. Using dioptre is better.
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Basically cannot watch vimeo's video at home in Canada. '
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Haven't tried it myself but always imagined a taking lens with a 1.5x oval aperture + a 1.33x anamorphic might be a good combo for simulating 2x bokeh and flaring without losing too much sensor real estate in achieving a 2.39:1 frame. For example a DSO FF58 with 1.5x oval aperture and an SLR Magic 1.33x Anamorphot might be an interesting set.
Pretty sure my math checks out:
100% image width / 1.5 = 67%
67% / 1.33 = 50%
50% = 2x horizontal squeeze
I think you can try other way. Just stack two front grass together, and rear glass together. Then the total ana lens won't be so long.
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Best to just photograph a perfect circle that has horizontal and vertical lines intersecting at the middle of it from various distances away. Then unsqueeze at say 1.8x, 1.9x and 2x and compare until you see a perfectly round circle, that will be the squeeze factor.
I have an Isco Ultra Star that is labelled as 2x but after testing it this way myself I found it to be 1.8x.
To me, all 2x lenses are always 2x if focus distance far enough. I think the reason is mounted, not closed enough. Here is an sample taken by ISCO's integrated projector lens.
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Usually, I think above 10m can be treated as 2x. Closer focus will reduce the ratio. Closest 5f/1.5m is about 1.85x, IMO. Also, center part is less ratio then left/right edge. There is always some distortion.
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I see,
Very complex thing. Need perfect distance with rear attachment and prime to the front one or astigmatism comes as hell.
There are other way: Fix the taking lens to the rear ANA and make a mechanism that the block move in-out of the camera. This is how anamorphic Lomo primes works.
Still very complex because the taking lens only need move a few mm from the sensor (Lomo´s focus ring have a pin that make this little move to the spherical block), and the cylindrical rear lens need move too much.
good luck
This way is suitable for FF system. For most of anamorphic lens on FF, around 100mm is best focal length without vignetting. And 100mm's prime lens focusing moving distance is about 10~15mm, basically equals to anamorphic lens moving distance from 1.5m to infinity. Also only external focus lens can be used. The advance internal focus lens cannot.
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Like or dislike? Need your feedback, thanks.
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I don´t understand.
Can you explain it?
See draft. I did not finish adjustment yet, due to the tube is still too long. But it should work. I mainly focus on auto lens usage.
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Need to use two lenses, ISCO integrated lens and Schneider ES lens. No aperture control. Taking lens is from ES lens, FL=60mm.
See pictures.
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I can provide you infos about Elmo II if you need.
I agree housing of 8Z / B&H is different, and rear sizes too. But I guess that's all. According to Andrew Reid "The Bell and Howell anamorphic by Kowa, then, is a Kowa Prominar in a sleeker chassis." ( http://www.eoshd.com/2011/02/kowa-anamorphic-lens-review/ )
That's an interesting triangle we have here: Elmo has same rear size as 8z/16h but looks like a B&H. B&H is lighter and wider than 8z/16h. 8z/16h is more common but cheaper with similar optical results (I guess but I'm not sure). Elmo and B&H are supposed to have more drastic glass tests than 8z/16h.
What do you think about it?
My understanding is they are all share the same optics from the sizes told. The difference might be coatings.
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How do you think this one.
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16h on FF max wide prime lens can be used is 75mm. I think 50mm is only in crop mode.
IMO, to get widest, must use 1.33X. On iPhone 5s lens, 30mm original equivalent FL, gets 22.5mm wide angle using moondog.
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Maybe no filter thread. Then you need this. www.ebay.com/itm/201428210201
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Maybe too close, using 0.x diopter should be much better.
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I was told SLR lenses are made by http://www.zyoptics.net/ from China.
So the price should have lots of drop space.
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Hi Ian, i read the pdf file and says
Focusing range: Infinity (°°)-13 ft (4m); 13 ft—7.5 ft (2.3m) with the close-up attachment lens
Isnt it 0.5?
4M=+0.25, since 2M=+0.5, 1M=+1, 0.5M=+2....
- premini and Ian Edward Weir
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The B&L lens I owned before is not focusable. The focus ring is fake.
I would say for the same price lens to me with similar size/weigh, ISCO HD attachment has 10 times better. There was a sample picture I posted before: http://www.eoshd.com/comments/topic/8047-need-help-on-anamorphic-lens/
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As much as hard data like weight, dimensions, modifications etc would add value to this thread, specific caveats like optical imperfections are also useful. Could you link to some clips that illustrate the uneven glass? Do you mean anamorphic "mumps"?
I mean we can see the glass surface is rough, or not smooth.
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IMO, B&L lens has no more value than Russia lens on EBAY every day. Its uneven glasses are able to be seen by naked eye.
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Good idea to glue adapter right on the lens! I never would have thought of that.
Do you have a link where I might find the ring?
All rings are available from eBay, step up or down one should work. The glue is better to use hot melt glue, getting it with the gun from digikey. That way you can easily remove it.
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Does anyone have any information on this eBay anamorphic lens? I more concerned about sharpness and flare if used on a GH4. Thanks.
Its sharpness is excellent, but no flare. Btw, it is over priced, IMO.
vm anamorphic 1.5x lens
In: Cameras
Posted
Hi all, this lens is on ebay too. http://www.ebay.com/itm/201442709002