K&R PhotoDigital 

This page has  K&R Facts, K&R Tests 

This is the PERFECT TIME
for you to drop off your

We offer fair trade-ins  for your Camera Gear
toward any upgrades or other gear

Rob, Wilma & Matt

                          K&R Test Box

K&R Photographics
KR PhotoDigital

 Test Box 

  At  K&R  I  use  this  test  Box  to  check  for  Color  Rendition,  Resolution,

Color  separation  and  overall  pleasing  effect  of  Cameras  &  Lenses

There are many factors that effect total image quality,
Not just the Sensor, or the body, or the lens or Manufacturer.
Factors such as Firmware, internal A_D Converters, Bit Depths, and Color Science all add up in the process of making the final RAW Images.

K&R Photographics / KR PhotoDigital has been in Business since July 4th, 1975
We are the ONLY locally owned & operated Camera Store in the Tri-State area

Hasselblad New Amazing X2D-100c Camera

A Great Gift

K&R GIFT Cards

K&R Gift Cards


$25 to $25,000

WHY Lens Calibrations

With MOST interchangable lens DSLR's there is a high probability that your various lenses will require "body to lens" calibration or "micro adjustments" so that the lens focuses properly with your "Autofocus" system.  WHY, (you say), because bodies & lenses are manufactured on a mass scale and all have a +/- tolerance.  Lens Calibrations can correct this using the camera &/or lens computers to compensate for these variances.  K&R will run tests and adjust to the closest settings possible with your equipment.  Each body & lens combo = 1 calibration, 1 body & 3 lenses Special for price of 1.
Please Note: Only camera bodies with "AF fine tuning" can be "calibrated".

K&R Front Focus

Front Focus

Front Focus can be seen in a lot of head shots when you focus on the eye and the nose is what is in focus.



Back or Rear Focus is usually seen when working with large apertures and focusing on a foreground element, and the focus ends up sharp on a background.

Best Focus

BEST focus

A properly calibrated autofocus gives you the freedom to shoot & develop quickly with confidence that your shots are actually focused where you set the AF point.

Lens Calibration

By K & R Photographics
Jan 28, 2022

Blurriness or unsharpness can ruin the best photographs, and you may not have the opportunity to capture the same picture again. Problems with sharpness may be related to your lens, and professionals will recommend having it calibrated. This is a crucial task if you want new and used cameras to perform their best.

A  Guide  to  Camera  Lens  Calibration
What  Is  It?

Many digital cameras use an auto-focusing feature that is activated by holding the shutter button halfway down or using back focus buttons. A sensor measures light levels through the lens with a process called phase detection. Inside most cameras are two prisms. These separate the image you see into two images, or use an image directly from the sensor in the case of mirrorless. There are various ways different cameras determine where the focus point should be - based on optics and sensor types. The auto-focus sensor then determines if they line up clearly and correctly and tells the camera how to adjust the camera's focus.
Auto-focus sensors may become unfocused from one another due to poor manufacturing, jostling around during travel, or if the camera is hit or dropped. Also, cameras and lenses from most manufacturers all have + and - tolerances that lead to errors in the Auto-Focus.  Any camera body may have different settings for Each lens that is used with it in the Micro-adjustments.  These settings are stored in the Camera not in the lens.

How  Is  It  Done?  
First, a camera repair professional will place the lens in front of powerful lights to expose an alignment tool at various distances depending on the focal length or lengths (for zooms) lenses. The alignment tool features several circles with alternating black and white lines or patches and a ruler to simulate the auto-focus feature. 
The technician will next take a photograph of the tool and reset the auto-focus so it has to adapt again to the shapes, patterns, depth, and colors. They’ll repeat this process until the auto-focus produces a crisp, clear photo of the alignment tool.
Technicians may also use computer-based software. As you go through a similar process as with the alignment tool, the computer—connected to the camera—reads photo clarity parameters and confirms if they’re accurate based on the photo that is taken. It will then guide you on the calibration changes to make on the camera's settings page.

Why  Is  It  Important?
A professionally calibrated lens is going to deliver the results you see in the viewfinder.  Whether you’re taking portraits or landscapes, this is crucial to color clarity and definition. Seeing the texture of a fabric or each leaf in a photograph of a tree drastically enhances the effect on a viewer.
Reliable calibration also saves you time. You won’t have to worry about front or rear focusing, constantly switching to manually adjusting the focus or having to re-shoot because of clarity issues.
So if you are using Auto-Focus and shooting at or near wide open f/stops then it is critically important to have your lenses and bodies calibrated together. This pertains to all DSLR bodies and also to mirrorless to a lesser degree.

K&R provides calibration services on any camera bodies that have this function in their menu systems. You can also do your own, provided you have patience and an alignment tool.  Older DSLRs without the function and all film cameras have to be calibrated physically using shims or other internal adjustments.
If you require camera maintenance services, reach out to K & R Photographics. This Fort Mitchell, KY, shop works with a variety of products, including Nikon® and Canon® cameras. They also carry a large selection of professional photo equipment, which you can learn about on their website. Call (859) 341-6986 to speak with a sales associate.


Our  Procedure  for  Used  EQUIPMENT

At K&R most of our used equipment is either trade-ins, upgrades or purchased from our wonderful clients when they no longer have a good use for the items. 
Before acquiring any used items of any type we give a thorough examination to determine condition and value,  Then after procurement, cameras & lenses are thoroughly cleaned, checked for any flaws.  Condition & correct operation are then rechecked. On Cameras & lenses we always record the number of actuations if available.
Other types of equipment are given a similar type of cleaning & checking, like lighting, printers, grip and other studio or lab items.
K&R Warrants almost of our used  equipment for 30 days, so that you know everything is in the condition specified.  In many instances we can also offer extended warranties.
Only then do we assign a fair value for resale based on averages of real trade in values and real "Sold" values for like equipment with the same type of condition.

Looking for used?  Just ask us because not everything is listed, or we may have it in process, or in the warehouse.  Large lab or studio equipment is too big for us to display.

Put me on Your List for Equipment
I am Looking to Buy. 
New or Used 

Just let us know what and we will  check our inventory for new or used or any other help you need.  Thanks, Rob

Contact Us

With your list of items you want or are looking for, and we will contact you..


538-542 Terry Lane,
Crescent Springs, KY  41017


Email: wilma@KRPhotodigital.com   Office:   1-859-341-6986        

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