Can anyone tell me if the new kit lens's image stabilization will work when mounted on the GH-1?

Thanks in advance!

For product specification, pricing, availability and business matters please visit my web site below as a matter of courtesy to our host.

http://www.transferconvert.co.uk/cinemania/

The vintage look digitally remastered...

I have a vimeo channel set up for the tests here:

https://vimeo.com/channels/rectilux (passwords are on the web site)

I also have a flickr account set up to view stills, which is the best way to evaluate sharpness etc

http://www.flickr.com/photos/125986580@N05/sets/72157646313357302/

I will shortly have a blog up and running, but you are very welcome to discuss these breakthough products here.

http://transferconvert.co.uk/cinemania/3ffpic09.png

Samyang 8mm 1:2.8 UMC Fish-eye is currently the smallest and the brightest Fish-eye lens compatible with compact cameras featuring APS-C sensor. It perfectly combines high optical value, impressive lens speed and exceptionally compact sizes.

Its sophisticated optical construction relies on the system of 10 lenses arranged in 8 groups. They include, among others, one aspherical (AS) lens and two lenses made of extra low dispersion glass (ED). This provides perfect sharpness for the entire field of view and maximum aperture of f/2.8. Obviously all surfaces of the lenses were covered with multi-layered UMC anti-reflective coatings adding to the high contrast and splendid light transmission.

Samyang 8mm 1:2.8 UMC Fish-eye will be marketed with Sony E (NEX) and Samsung NX mount. In both cases its maximum angle of view will amount to 180 degree, with the minimum focusing distance of 0.3 meters.

Release date and the expected price will be separately announced on a later date

Available at:

• http://www.ebay.com/sch/i.html?_trksid=p5197.m570.l1313&_nkw=Samyang+8mm&_sacat=0

The average resolution for a full frame lens is around 45-50lp/mm and a great m43 lens is around 77-82lp/mm. The resolution charts shows the lenses at around 2000 - 2600 lines resolution maximum in still photos. Using a full frame lens in m43 sensor is worse because the sensor magnify the center area so the lp/mm will be half compared to same lens in a FF camera, a focal reducer can help a lot.

So the still lenses can work good up to 4k resolution, sometimes lower resolution than 4k video, and maybe for 8k video there will be the need of new special lenses, high price.

Considering that the indie people can buy only low price lenses, so work with 8k video will not make sense. 4k video is the maximum resolution for our photo/still lenses, no matter they are m43, aps-c or ff lenses.

Example: the 12-35 lens at f4 is around 77lp/mm in the image center, the GH4 sensor in 4k is 8.1mm height, doing the maths this lens will resolve around 1250 lines in GH4 4k video.

The new full frame Sigma Art 20mm 1.4 can do around 47lp/mm, so it will resolve around 770 lines in GH4 4k video. With a focal reducer this can increase to around 1080 lines. Most good Full Frame lenses are around a 50lp/mm maximum, and this is stoped down to f5.6

In a full frame camera, considering the sensor 36 x 20,25mm, this same sigma lens can resolve around 1900 lines.

The RGB bayer pattern decreases the camera resolution a little bit, around 1,33x less than the pixel count, so a 2160p video will deliver a maximum 1620 lines. The GH2 is 1080p and is around 810 lines.

Lens resolution is a good reason for Panasonic release new cameras with the multi aspect sensor, a bigger sensor can use more image area form the lens and record higher resolution, more lp/mm. The GH4 sensor is 8.1mm height, 1250 lines with the 12-35 lens. The multiaspect sensor with 3840x2160 pixels for video would be 10,09mm height, and could record 1560 lines from the same lens.

All these maths shows that 4k video is the sweet spot resolution for a video camera and for the lenses we can buy, and all these maths are in image center, in corners the lenses resolution is worst.

Can some one make a guide to take a Chinon Auto MC 50mm f/1.7 apart? And screw it back together again?

My lens look like this now, im stuck here.

Is it worth the extra cash?

How is your experience? What sets are good for 4k?

I recently purchased the following lens from B&H:

http://www.bhphotovideo.com/c/product/1143786-REG/canon_0570c002_ef_50mm_f_1_8_stm.html

and the following adapter from Amazon:

http://www.amazon.com/gp/product/B003150B6O?psc=1&redirect=true&ref_=oh_aui_detailpage_o04_s00#Ask

Thing is, I can't get the lens to focus. Does it need to be activated by a Canon camera and then set to MF? Do I need an active adapter to use this lens? Did I totally screw up this purchase bundle?

Still pretty much a noobie on understanding lenses. Any and all help or explanations would be much appreciated!!

Specs

• 17 elements in 13 groups, including ED
• Vibration reduction allows 4.0-stop increase in shutter speed
• Nano Crystal Coat
• Aspherical lenses and ED glass elements
• Electromagnetic diaphragm mechanism
• Fluorine coat
• 480 gr
• $1070 price at http://www.amazon.com/gp/product/B010RAAOIK/

Specifications:

• Aperture - Max f/2.8, Min f/22
• Angle of View - 107° - 76°
• Minimum Focus Distance - 11" (27.94 cm)
• Magnification - 0.19x
• Maximum Reproduction Ratio -1:5.26
• 13 Groups, 15 Elements
• Dimensions - 3.54 x 5.25" (8.99 x 13.34 cm)
• Weight - 2.09 lb (950 g)

Available at:

• http://www.amazon.com/Tokina-AT-X-FX-16-28mm-Canon/dp/B003V1YGT6/
• http://www.amazon.com/Tokina-AT-X-16-28mm-FX-Nikon/dp/B003V1YGSW/

Reviews:

• http://www.focus-numerique.com/test-1641/objectif-test-tokina-atx-16-28mm-presentation-caracteristiques-1.html

So I have a brand new camera with the above lens. After one day of stills shooting I can't mount it properly any more. The bayonet is bent. It protrudes on one side of the normally flat ring part. On the camera's side everything is perfect. I ordered it in South Korea, so firstly, do you guys think that I maybe received a knock off? And secondly, is it possible to exchange just the bayonet of the lens without messing with the optics?

Thanks! Patrick

Which camera is better to work with this lenses? F3 is cheap at rentals, F55 is not but some people say that F55 got something like anamorphic mode and F3 not.

It's all about the squeeze, yes? I dont know much about this...

I found nice anamorphic video with lomo anamorphic lens and F3:

• 16-50mm F2-2.8 S
• 18 elements in 12 groups
• 82.6°- 31.4° Angle of View
• Optical Image Stabilizer
• Around $1200

Available at:

• http://www.amazon.com/Samsung-16-50mm-2-0-2-8-Series-Camera/dp/B00HV6KMQ8/
• http://www.adorama.com/ISG1650S.html

My first post on this forum - recently it kept popping up whilst researching legacy lenses for m43 so I figured there may be a few experts in here who could help me out.

I'd like to declick my OM primes (28 and 50) and whilst the procedure looks straightforward enough I'm having a problem at the first hurdle: taking the ring off. I've tried using a mini flat-headed screwdriver and pushing into the engraved lettering; I've tried pushing down on alternate sides and then around the ring; I've even put on some rubber gloves to get some purchase, but it won't budge.

Does anyone have any other tips that may help?

It looks like the topic of using 2/3" Eng lenses has died down a bit.

I recently was selling a Servo Powered Zoom Grip with Power Cable and a Battery, but no one seemed to want it ??

After reading numerous posts in the various forums and blogs about people burning out their servos trying to power their lenses, I thought for sure that someone would want to buy a replacement... but no bites.

I think people out there need them, but don't think they will have any luck finding one so don't bother looking in the first place.

Please check out my videos by following the links below. On is for the Grip that I was selling on eBay, and the other is about a lens that I'm selling.

One video explains why and how I built the adapter cables, and the other shows the features of the Fujinon lens that I'm selling. The features include examples of the zoom characteristics.

I would appreciate your feedback, especially about where I might find people who need replacement grips... Where can I find them??

Links:

Available at (around $1500):

• http://www.amazon.com/Samsung-50-150mm-Zoom-Camera-Black/dp/B00NYQY22Y/
• http://www.bhphotovideo.com/c/product/1081863-REG/samsung_ex_zs50150abus_50_150mm_f2_8_ed_ois.html

PR

Expanding upon Samsung’s premium line of “S” lenses, the new Samsung 50-150mm F2.8 S lens is the second in the series and affords photographers the opportunity to capture telephoto images with crisp clarity and tack sharp focus in a variety of scenarios. Its fast aperture provides excellent low light performance and beautiful bokeh, making it perfect for sports, nature and wedding photography. The lens features an Ultra-Precise Stepping Motor (UPSM), improved from the conventional Stepping Motor (SM), it is three times more precise in its ability to control and focus on subjects. Photographers can capture sharp photos at low shutter speeds using advanced multi-axis Optical Imaging Stabilization (OIS) with four-axis control and a six-axis sensor array. These sensors detect camera motion, and help the lens to make the precision corrections necessary.

The new telephoto lens features a dust and water resistant build making it both durable and reliable. All of the lens controls, focus, zoom and OIS, are located in a single “function zone” on the side of the lens, making it easy to control.

Thanks

Specifications

• 200–400 mm
• 4 stops IS
• F4-F32
• 9 blades
• 25 elements in 20 groups
• Minimum focus at 2m
• Magnification - 0.15x
• Ultrasonic ring AF
• Magnesium alloy barrel
• Sealed
• Filter thread - 52mm for drop in filter
• 3 position distance limiter
• Built-in 1.4x extender (8 elements in 4 groups)m making lens 280-560mm F5.6 lens with 0.21x max magnification
• 3620 g (7.98 lb)
• Diameter - 128 mm (5.04″)
• Length - 366 mm (14.41″)

Previews and samples:

• http://www.focus-numerique.com/canon-ef-200-400mm-4l-is-usm-extender-1-4x-12-999-euros-news-4250.html

Available at:

• http://www.adorama.com/CA2004004.html

Here are two examples in 4k of my baby Hypergonar (1.75x anamorphic lens, on C-mount Pentax Cosmicar 25mm 1.4 C-mount lens) , one with the new 4:3 24p mode on GH4, the other in 3:2 25p. More info on the Vimeo pages.

Thanks for watching, any comments welcome :)

Seb Farges

Any guidance is greatly appreciated. Thanks in advance