The Bosch CS-Mount 9-40mm 5MP Varifocal Lensis designed to provide improved image resolution and sharpness and good depth of field. It can efficiently avoid the diffraction issues which can occur with megapixel sensors. This lens offers long and reliable operation with almost no maintenance.

Compact and rugged, the Varifocal SR Lens is designed for 1/2.5" format sensors and features SR-iris control. This lens comes with a standard CS mount and the iris control connection is a 4-pin standard plug that fits directly into the camera's iris output. The lens delivers good optical quality thanks to its megapixel resolution, contrast reproduction, and coating.

The mechanical construction is designed to withstand both frequent iris control operations and the environmental stress of security installations. This lens is a flexible, high-quality, reliable lens that will complement an HD camera's performance.

For 1/2.5" Format Sensors    SR Megapixel Optical Resolution    CS-Mount    SR-Iris    High-Quality Optics    Reliable, Robust Construction    Avoids Diffraction

Related Questions and Answers

Q: 1. Is there any difference between this lens and "Voigtlander Heliar 40mm f/2.8 Aspherical Lens" for leica cameras?

A: The main difference would be how these lenses would focus. The Voigtlander Heliar 40mm f/2.8 Aspherical Lens would have a manual focus ring on it, while the VM 40mm f/2.8 Heliar Lens for Sony E-Mount requires a Voigtlander VM-E Close Focus Adapter for VM-Mount Lens to Sony E-Mount Camera in order to achieve focus.

Q: 2. how do I get the adapter for this lens, how much length does it add to the lens?

A: The adapter is, Voigtlander VM-E Close Focus Adapter for VM-Mount Lens to Sony E-Mount CameraB&H # VOSCAMLE Mfr # BD272Aa href= http://bhpho.to/1cZVfta. target= _blank http://bhpho.to/1cZVfta./aAnd it is about 4mm thick.

Q: 3. When setting the aperture manually on this lens, do I have to make any aperture settings on the sony a7 series camera as well?

A: Not sure I completely understand this question, but when mounting this lens to an A7 (with the Voigtland close focus adaptor) you need to set the camera to 'shoot without lens'. The lens itself is completely manual.

Q: 4. Will this have a fisheye distortion at it's widest angle zoom? need to replace a gopro with something that doesn't fisheye and was looking at one of the marshall cameras and this lens.

A: This lens is at the border of starting to get distortion.

Q: 5. are there any other options for the adapter, or is the Voigtlander VM-E the only one?

A: There are other companies offer M to E helicoid adaptors. Shoten is the only one that comes to mind. Supposedly quite a bit cheaper, 6mm extension instead of 4mm of the Voigtlander and no infinity lock.I have read good things about it but, I bought the Voigtlander to use the 40mm on my a6000 and have no reason to compare alternatives... yet.

Q: 6. Just making sure as I want to be 100%, does this come with the adapter or do I need to purchase it separately?

A: The adapter would need to be purchased separately. Additionally this lens has no focusing mechanism so it requires an adapter with a helicoid such as the one linked below.I have read decent reviews of other brands that have released similar adapters but bought Voigtlander.

Q: 7. I purchased this lens for my Marshall compact broadcast camera and I am having a hard time focusing. I have it ZOOMED IN to around 70mm and no matter what I do with the FOCUS RING, it will not get into focus. It seems to *almost* get into focus, but the ring doesn't move far enough or something. Can someone please help me with this? Perhaps it's something easy that I'm overlooking. I should mention that if I zoom all the way to 80mm, I am able to focus no problem. But I need to zoom out a bit to around 70mm.. and when I zoom out to anything other than the full 80mm, it doesn't want to focus no matter what. Thank you.

A: This is a CS mount lens. Please verify that the camera you are connecting this to is a cs mount camera.

Q: 8. What is the inner thread size on the flat lens hood?

A: The thread size for this lens is 37mm.

Q: 9. Does this work with the Techart Pro VII? https://www.bhphotovideo.com/c/product/1722621-REG/techart_pro_lm_ea9_leica_m_mount_le

A: Yes, the Voigtlander VM 40mm f/2.8 Heliar Lens for Sony E-Mount should be compatible for use with the Techart PRO Leica M-Mount Lens to Sony E-Mount Camera Autofocus Adapter (Version II).

Q: 10. the lens is labled 5-50mm "IR" Varifocal lens... what does the IR stand for? Is this an infrared lens?

A: The Marshall Electronics 3MP CS-Mount 5-50mm IR Varifocal Lens BH #MAVSM5504 is an IR corrected lens which employs low dispersion glass (LD glass) which is a type of glass that greatly reduces Chromatic Aberration. Chromatic Aberration is a type of distortion in which there is a failure of a lens to focus all colors to the same convergence point or image plane. Infrared or IR Corrected Lenses should be used on both color and monochrome cameras in all lighting conditions to achieve a crisp sharp image at all times.