About Us
The Professional's Source Since 1973
  • Help
  • 800.606.6969
Hello, Log InAccount & Orders
My Cart
Video Chat with a Photography Expert - Live

Carson SM-44 4.5x SensorMag Magnifier

BH #CASM44 • MFR #SM-44
 76 reviews
Carson SM-44 4.5x SensorMag Magnifier
Key Features
  • Use for Cleaning DSLR Sensors
  • Magnifier Has Adjustable Focus
  • Two Diameter Settings
  • Six LEDs Supply Illumination
The SM-44 4.5x SensorMag Magnifier with Dust Blaster from Carson Optical helps you to clean a DSLR's image sensor. The 4.5x-magnification lens is strong enough to help spot small particles and debris. The SensorMag's lens rests inside the camera's bayonet and features adjustable focus to accommodate different size cameras and flange depths. It also swings 45° out of the way to gain access to the sensor. There are two diameter settings to fit various camera bodies. Illumination is via six LEDs that operate on two included CR2032 batteries. The 1.8 ounce magnifier stores in its own zippered pouch.
In Stock
$24.99
Ask Our Experts
800.606.6969

Carson SM-44 Overview

The SM-44 4.5x SensorMag Magnifier with Dust Blaster from Carson Optical helps you to clean a DSLR's image sensor. The 4.5x-magnification lens is strong enough to help spot small particles and debris. The SensorMag's lens rests inside the camera's bayonet and features adjustable focus to accommodate different size cameras and flange depths. It also swings 45° out of the way to gain access to the sensor. There are two diameter settings to fit various camera bodies. Illumination is via six LEDs that operate on two included CR2032 batteries. The 1.8 ounce magnifier stores in its own zippered pouch.

Compatibility
This magnifier is not suitable for mirrorless cameras and should only be used with DSLRs.
UPC: 750668010056

Carson SM-44 Specs

Magnification4.5x
Lens ConstructionAcrylic
Linear Field of ViewNot Specified by Manufacturer
Dioptric Correction RangeNot Applicable
PowerTwo CR2032 batteries
Dimensions2.0 x 2.5 x 2.25" (5.1 x 6.4 x 5.7 cm)
Weight1.8 oz (51.0 g)
Packaging Info
Package Weight0.31 lb
Box Dimensions (LxWxH)3.7 x 3.6 x 2.95"

Carson SM-44 Reviews

It works !

By Richie
Rated 5 out of 5
Date: 2023-02-26

I bought one of these many years ago to use on my DSLR's but never used it and just kept it somewhere. Yesterday on my R5 pictures, I thought I saw a UFO on one corner, and a Balloon on the other corner! I thought to myself, this can't be... they can't be coming together to invade us all at once! So I took lots of pictures at the skies above me, so I can have an idea when they will land on earth, or when they get shot by the US military to protect us... Alas, these two things on my screen never moved, even when I shoot my wall... so I thought I was just being paranoid. I went to my backyard and dug up my plastic barrel where this thing called Carson Sensor Magnifier was stored, it's been there for more than a decade, luckily the batteries did not leak, but the light was now very weak. A new pair of CR2032 batteries made this thing work ! Now I see two dust particles on my R5's sensor, it was difficult at first because I just held it on my hand while the camera was on a tripod. The technique is to move the magnifier towards the sensor, or move back up a little to see a clear picture of the sensor. Now I see a clear picture, I did not see a balloon or a UFO ! Time to order some sensor fluid though as my Dust wand kit's sensor fluid has evaporated!

NOT for SONY E-mount

By Erik
Rated 1 out of 5
Date: 2022-08-17

Dang it! I didn't see previous reviewer who found the same thing. Would be fine for any camera where sensor has a long flange-back distance (that is, sensor is set way back in the body). Sony sensor is close to mount, which means that one can unscrew the focus device ALL the way till it falls out and it's STILL not far enough from the sensor to focus on the E-Mount sensor. So basically you are going to have to freehand hold this floating above the camera body in one hand as you work on the dust with the other hand. Cannot rest it on the body and have it focus. Other bodies? Probably a 5/5. Sony A7? 1/5.

Does its job

By George
Rated 4 out of 5
Date: 2022-05-23

I purchased this in conjunction with a sensor cleaning kit so I could do close examination of the sensor. The U interface has 'feet' that ride on the inside diameter of the lens flange on the camera. The fit is a bit large for my Nikon Z 7 II, but at this price point it's worth the compromise.

Really helps see dirt on the sensor

By Neil
Rated 4 out of 5
Date: 2022-05-10

I recommend this as a good product for the money. This works the way it is supposed to and really helps. The focusing mechanism could have a little more range. Great packaging with a nice case. I don't use the ability to swing the lens out of the way as I don't think it gives you enough room to maneuver.

A7C Sensor Cleaning View

By Larry
Rated 5 out of 5
Date: 2022-03-31

There was a problem getting the correct focal length for examining the Sony A7C Sensor. I used a Fotasy T2-FE E mount adapter which I placed the Carson SM-44 on top of. This gives the correct focal length and works great. Make sure everything is very clean before getting near the sensor. The Type 3 Sensor Swabs, Rocket blower and Aeroclipse cleaning solution I ordered at B&H did the job.

Does not fit the mount very well

By Thomas
Rated 3 out of 5
Date: 2022-02-14

The light is bright but the mechanism that's supposed to secure the Sensor Mag to the camera mount is a waste.

Nice tool to have.

By Christopher
Rated 5 out of 5
Date: 2023-02-26

Very useful tool to have. Nice magnification. Led lights are bright. Nice little hard shell canvas zipper storage case.

Very happy with this device!

By Maksim
Rated 5 out of 5
Date: 2023-02-19

This is the best solution I have found on the market for monitoring the condition of a camera sensor. It is very convenient to adjust the distance from the lens to the sensor. There is a uniform illumination of the sensor. All this helps to quickly see any contamination on the sensor. The device helps me diagnose the condition of the sensor before and after cleaning. Great for mirrorless cameras. I recommend!

See any errors on this page? Let us know

YOUR RECENTLY VIEWED ITEMS

Will this work on Sony A77II and A99II? Is there ...

Will this work on Sony A77II and A99II? Is there a video besides one on this page that shows how to install on lens mount?
Asked by: George
I have tried it. The instructions say there should be a tight fit but it just sets on top of mount not in the mount and when mirror is up it interferes. I've checked YouTube for specific videos using the device specifically on the Sony A77M2 and 99M2 and there are none.
Answered by: George
Date published: 2020-08-05

Will this work with any of L-Mount alliance ...

Will this work with any of L-Mount alliance camera bodies, or is the L-mount too wide to securely seat the device?
Asked by: Peter J
The Carson SM-44 4.5x SensorMag Magnifier is not compatible with any L-Mount alliance camera bodies or any other mirrorless cameras.
Answered by: Lawrence
Date published: 2021-12-29

question

Will this unit adapt to and work with the Leica M10?
Asked by: Olivier C.
Yes, this will work with the Leica M10.
Answered by: Rob
Date published: 2019-08-02

Has anyone used this product with the Sony A6000 ...

Has anyone used this product with the Sony A6000 series of Mirrorless Cameras? or can the Manufacturer or B+H comment.
Asked by: Tony
I have had several people use this and has been perfect for making sure to have a beautifully clean sensor.
Answered by: Zachariah
Date published: 2021-02-22

will it fit on the Nikon Z cameras? I understand ...

will it fit on the Nikon Z cameras? I understand it said Nikon cameras but thought that might be F mount.
Asked by: john
I haven't used it on z mount.
Answered by: munish
Date published: 2020-03-26

Would this work for a S35 PL-Mount camera, like ...

Would this work for a S35 PL-Mount camera, like an Alexa Mini?
Asked by: Andrew
The Alexa Mini is more similar to a mirrorless camera rather than a DSLR so the Carson SM-99 version would be recommended instead. Please take a look at the following link: https://bhpho.to/3lHiAk7
Answered by: Dan
Date published: 2023-02-17

Since this isn't suppose to work with a ...

Since this isn't suppose to work with a mirrorless camera, if I use an extension tube between this and the camera, would that allow it to work properly?
Asked by: Frederick
I purchased this item to assist in cleaning my DSLR sensor however it was not worth it. It is just one more of those items you don't need in photography. I used it once and it now in my box of items that was advertised as must have. My advise is spend your money on cleaning materials and a magnifying glass. I'm am certain you have a good light source for inspecting your sensor. I hope this was helpful.
Answered by: Lester
Date published: 2021-11-19

Is this suitable for use on a full frame Canon ...

Is this suitable for use on a full frame Canon mirrorless camera (e.g EOS R)?
Asked by: Jon
Yes, I use it on the 5D Mk IV
Answered by: Anonymous
Date published: 2020-01-14
  • y_2023, m_5, d_31, h_22CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.35
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_10
  • loc_en_US, sid_851383, prod, sort_[SortEntry(order=HAS_STAFF_ANSWERS, direction=DESCENDING)]
  • clientName_bhphotovideo