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Problem with my Kamlan 50mm f1.1 Prime Portrait Le

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Post Options Post Options   Quote koldtoft Quote  Post ReplyReply Direct Link To This Post Topic: Problem with my Kamlan 50mm f1.1 Prime Portrait Le
    Posted: 12 January 2019 at 18:32
Yes, I can get the Panasonic 20mm and 25mm F1.7 locally. It's around 345 USD.
 



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QuietOC View Drop Down
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Post Options Post Options   Quote QuietOC Quote  Post ReplyReply Direct Link To This Post Posted: 12 January 2019 at 17:46
Originally posted by koldtoft koldtoft wrote:


So acording to this calculator i found, the Zonlai 22mm F1.8 will give me a bit more field of view but a bit less depth of field.

Do I have that right?

Yep. I like how small the Zhongyi is for being F0.95. I was considering getting the Neewer 25mm F0.95 for E-mount, and while it might have slightly better image quality, it is much larger.

Can you get the Panasonic 20mm F1.7 or 25mm F1.7 locally? Those look pretty affordable.

Edited by QuietOC - 12 January 2019 at 18:03
A68 30M 35 50 60M 16-50 16-80 18-55 18-70 18-135 55-200 55-300
A6000 LA-EA1 6.5 16 20 30 50 60 16-50 18-55 55-210
600si: 20 24 28 50 100M 135 24-85 24-105 28-105 35-70 35-105 70-210 75-300 100-200
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Post Options Post Options   Quote koldtoft Quote  Post ReplyReply Direct Link To This Post Posted: 12 January 2019 at 16:10
Thanks again.

Ok, so I think I got it narrowed down to

the Zonlai 22mm F1.8 Large Aperture Manual Focus Lens, Prime Lens for Micro Four Third Digital Mirrorless Cameras

or

the Zhongyi Mitakon Speedmaster 25mm f/0.95 for Micro Four Thirds Cameras (MFT/M43)

So acording to this calculator i found, the Zonlai 22mm F1.8 will give me a bit more field of view but a bit less depth of field.

Do I have that right?

Zonlai 22mm F1.8
I will need to be 1.27 meters from the sensor to get my head and upper body in frame.


Zhongyi Mitakon Speedmaster 25mm f/0.95
I will need to be 1.45 meters from the sensor to get my head and upper body in frame.


Edited by koldtoft - 12 January 2019 at 16:36
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Post Options Post Options   Quote QuietOC Quote  Post ReplyReply Direct Link To This Post Posted: 12 January 2019 at 15:04
Originally posted by koldtoft koldtoft wrote:

Thank you guys for your excellent and in-depth answers.

@QuietOC
The Canon mount Sigma 18-35 F1.8 using the Metabones Speedbooster is a bit too expensive for me, so it's down to one of the two you recommended or this Zhongyi Mitakon Speedmaster options I found.

Prices are a bit random due to Danish import taxes.

Do you have any thoughts on which of these would be best suited for my needs, filming and shooting portrait style with bokeh on a GH4 in fairly tight quarters?
  1. At 220 USD - Zonlai 22mm F1.8

  2. At 418 USD - Zhongyi Mitakon Speedmaster 25mm f/0.95

  3. At 553 USD - SIGMA CON. 16MM F/1.4 DN DC FOR SONY E-MOUNT

Do you have any thoughts on which of these would be best suited for

You will need the Micro Four Thirds version of any of these. There's no way to adapt a Sony E-mount lens to your GH4.

I haven't used any of these, but I've read reviews. The Sigma 16 F1.4 will likely be the sharpest especially in the corners. It has quite a bit of distortion that should be automatically corrected in camera.

The 25mm F0.95 lenses seem more geared to portraiture than sharp edges. There are some C-mount that can be adapted too. It looks like you can get the native mount ones for $300 used on eBay.

I like my 25mm F1.8. I just bought a brand-new Neewer branded copy for $30. The 22mm is more expensive, but seems to be quite good.
A68 30M 35 50 60M 16-50 16-80 18-55 18-70 18-135 55-200 55-300
A6000 LA-EA1 6.5 16 20 30 50 60 16-50 18-55 55-210
600si: 20 24 28 50 100M 135 24-85 24-105 28-105 35-70 35-105 70-210 75-300 100-200
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Post Options Post Options   Quote koldtoft Quote  Post ReplyReply Direct Link To This Post Posted: 12 January 2019 at 14:27
Thank you guys for your excellent and in-depth answers.

@QuietOC
The Canon mount Sigma 18-35 F1.8 using the Metabones Speedbooster is a bit too expensive for me, so it's down to one of the two you recommended or this Zhongyi Mitakon Speedmaster options I found.

Prices are a bit random due to Danish import taxes.

Do you have any thoughts on which of these would be best suited for my needs, filming and shooting portrait style with bokeh on a GH4 in fairly tight quarters?
  1. At 220 USD - Zonlai 22mm F1.8

  2. At 418 USD - Zhongyi Mitakon Speedmaster 25mm f/0.95

  3. At 553 USD - SIGMA CON. 16MM F/1.4 DN DC FOR SONY E-MOUNT

Do you have any thoughts on which of these would be best suited for
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Post Options Post Options   Quote QuietOC Quote  Post ReplyReply Direct Link To This Post Posted: 12 January 2019 at 12:32
Originally posted by koldtoft koldtoft wrote:


So my question is.
Is this just what a 50mm lens does...

Yes, that's the angle-of-view of a 50 mm lens on a Four-Thirds sensor. It should be good for portraits, but not so good for filming yourself.

How much "better" would this be with a kamlan 28mm f/1.4 lens on the same GH4 camera?

It would be somewhat wider but not really wide. A moderate wide angle lens would be easier to use. Look for a lens in the 16-20 mm range for your GH4.

A common but somewhat expensive solution is adapting a Canon mount Sigma 18-35 F1.8 using the Metabones Speedbooster. This gives you a very bright wide to normal zoom. It is cheaper than buying the native F1.2 primes.

If you really want an inexpensive manual lens, the Zonlai 22mm F1.8 should be a better choice than the Kamlan 28mm. I have the 25mm F1.8, but I would recommend going wider.

25 mm is considered a normal prime on Four-Thirds. There are a few semi affordable manual 25mm F0.95 options if you want blurred backgrounds. These should be similar to the Sigma 18-35 F1.8 on the Speedbooster set to 35mm.

There are other options like the Sigma 16mm F1.4 and 19mm F2.8 primes. I forget what Olympus and Panasonic offer. The 19mm won't give you much background blur.

Edited by QuietOC - 12 January 2019 at 13:03
A68 30M 35 50 60M 16-50 16-80 18-55 18-70 18-135 55-200 55-300
A6000 LA-EA1 6.5 16 20 30 50 60 16-50 18-55 55-210
600si: 20 24 28 50 100M 135 24-85 24-105 28-105 35-70 35-105 70-210 75-300 100-200
 



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Post Options Post Options   Quote pegelli Quote  Post ReplyReply Direct Link To This Post Posted: 12 January 2019 at 12:23
Originally posted by koldtoft koldtoft wrote:


So my question is.
  • Is this just what a 50mm lens does or is there some camera setting I can change to improve this (zoom out / cover a larger area) without moving the camera back.
  • How much "better" would this be with a kamlan 28mm f/1.4 lens on the same GH4 camera?
  • Any other helpful/creative tips or how I can work around the problem?


Any help will be greatly appreciated. Thank you very much.


Welcome to Dyxum, and allthough this forum is dedicated to stills photography with Minolta and Sony cameras I'll try to answer your questions anyway:

1: This is what a 50 mm lens does on a M43 camera, it has the same Field of View as a 100 mm lens on an old 35 mm film camera (because the sensor is so much smaller than a 24 x 36 negative/colour slide

2: Yes, the vertical size shot from the same distance will be 68 cm vs. the 37 you get now.

3: No, not really other than buy a camera with a larger sensor or a lens with a shorter focal length. But if you do the first you will need to exchange your lens as well, because there are no larger sensor cameras which are compatible with the mount of your current lens.

Hope this helps
Mind the bandwidth of others, don't link pictures larger then 1024 wide or 960 pix high, see here
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koldtoft View Drop Down
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Post Options Post Options   Quote koldtoft Quote  Post ReplyReply Direct Link To This Post Posted: 12 January 2019 at 11:53
Hi everyone and happy 2019.

I am having a problem with my recently purchased Kamlan 50mm f1.1 Prime Portrait Lens. I am using it on a Panasonic Lumix GH4.

I am a novice, so please forgive me if I am using the terms wrong or explaining myself poorly.

My problem is that the lens seems to be "zoomed in" or " too much tele" or however you say it.

I was planning to film myself (vlog style) but in order to get my upper body and head in frame, I need to be 5-10 meters from the camera/lens. And since I also want some distance to the background behind me (to get that blurry background bokeh effect) it feels like a need an airplane hangar in order to have enough space, to get myself in-frame. (and I live in a small apartment)

As you can see from the below samples, the frame only covers an area (height) of about 30 centimeters or 12 inches when filmed/shot at a distance of 2 meters / 6,5 feet to the camera/lens.

Here is a 10sec 4K video sample, shot at a distance of 2 meters or 6,5 feet
https://www.youtube.com/watch?v=-1hjxC2prvY

Here is a photo sample, shot at a distance of 2 meters or 6,5 feet


So my question is.
  • Is this just what a 50mm lens does or is there some camera setting I can change to improve this (zoom out / cover a larger area) without moving the camera back.
  • How much "better" would this be with a kamlan 28mm f/1.4 lens on the same GH4 camera?
  • Any other helpful/creative tips or how I can work around the problem?


Any help will be greatly appreciated. Thank you very much.
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