« Posts tagged 6D

Waxing Crescent Moon

Waxing Crescent Moon 7-3-2014 Austin, TX 1920x1280

Waxing Crescent Moon 7-3-2014 Austin, TX. Taken hand held on a Canon 6D with a 70-200 f/4 is at 200mm, 1/200 shutter, iso 320 and f/4 1920×1280

Galveston Sunset

2560x1440 Galveston Sunset

2560×1440 Galveston Sunset

New Year’s

Sparklers taken with a long exposure. Canon 6D with 17-40 f/4 lens. Taken at 17mm,  ISO 100, f/8 for 15sec. RAW edited in LR.

Sparklers taken with a long exposure. Canon 6D with 17-40 f/4 lens. Taken at 17mm, ISO 100, f/8 for 15sec. RAW edited in LR.

Canon 6D with 17-40 f/4 lens. Taken at 31mm, f/4, ISO 6400 and shutter 1/80. RAW edited in LR

Canon 6D with 17-40 f/4 lens. Taken at 31mm, f/4, ISO 6400 and shutter 1/80. RAW edited in LR

Canon 6D with 17-40 f/4 lens. Taken at 31mm, f/4, ISO 6400 and shutter 1/80. RAW edited in LR

Canon 6D with 17-40 f/4 lens. Taken at 31mm, f/4, ISO 6400 and shutter 1/80. RAW edited in LR

Canon 6D with 17-40 f/4 lens. Taken at 31mm, f/4, ISO 6400 and shutter 1/80. RAW edited in LR

Canon 6D with 17-40 f/4 lens. Taken at 31mm, f/4, ISO 6400 and shutter 1/80. RAW edited in LR

Austin night at 6th

Canon 50D with 10-22mm lens at f9. ISO 400 and a 2.5 sec shutter. Single RAW edited in Lightroom. 1920x1080

Canon 50D with 10-22mm lens at f9. ISO 400 and a 2.5 sec shutter. Single RAW edited in Lightroom.
1920×1080

New York

Got to visit New York last week, more specifically Manhattan. I took along my Pentax k1000 and two Pentax lenses. The 50mm f/2 stayed on the K1000 but the modified 55mm f/2 Pentax lens was used on my Canon 6D along with a 17mm-40mm and a 50mm f/1.4. Even though I’ve modified both Pentax lenses to work on the 6D I think the 55mm is a little sharper and decided to leave it on the Canon. I also picked up a 52mm threaded lens hood for the 55mm.

Pentax k1000 and 50mm f/2 prime using kodak 400 film

Pentax k1000 and 50mm f/2 prime using kodak 400 film

Pentax k1000 and 50mm f/2 prime using kodak 400 film

Pentax k1000 and 50mm f/2 prime using kodak 400 film

911 memorial

Out of camera JPG using Standard picture style with some added sharpness in camera. Lens used was the Pentax 55m at f4 iso 2500 and a shutter of 1/500 on the 6D

Out of camera JPG using the Canon 6D standard picture style with some added sharpness in camera. Lens used was the Pentax 55m at f4 iso 2500 and a shutter of 1/500

Fun shot with my 50mm 1.4 at iso 12800 and 1/125. Lens was wide open at 1.4. Taken without looking from about waist level. Just a fire away and hope for the best type shot.

Fun shot with my 50mm 1.4 at iso 12800 and 1/125. Lens was wide open at 1.4. Taken without looking from about waist level. Just a fire away and hope for the best type shot.


Pentax k1000 and 50mm f/2 prime using kodak 400 film

Pentax k1000 and 50mm f/2 prime using kodak 400 film

Canon 6D using a modified Pentax 55m lens.

Canon 6D using a modified Pentax 55m lens. f/2.8 at 1/100 with an ISO of 500

In Camera Black and White on the Canon 6D. 17mm-40mm f/4 lens used at f/4, 17mm, 1/200 and an ISO of 500. This Picture can also be used as a Desktop. 1920x1280

In Camera Black and White on the Canon 6D. 17mm-40mm f/4 lens used at f/4, 17mm, 1/200 and an ISO of 500. This Picture can also be used as a Desktop. 1920×1280

Modifiying an old 55mm f2 Pentax Lens to work on a Full Frame Canon

SMC Pentax 55mm Lens with Aperture Lever intact before surgery.

SMC Pentax 55mm Lens with Aperture Lever intact before surgery.

First things first, attempt this modification at your own risk. If you break something or yourself don’t come crying to me.

I recently was given an old Pentax lens and wanted to use it on my Canon Cameras. Now, for APS-C Canon DSLR’s like the Rebel line this is not much of a issue. Purchasing a simple Pentax to EOS adapter for a few bucks makes this happen. However, If you want to use it on the the 5D or 6D Cameras you should stop before attaching the adapter. This is because while the Crop Sensor Cameras work fine, Full Frame Cameras like the 5D, 6D etc. have a larger mirror that will hit the Aperture lever/guard on the back of the lens. The solution? Simply put, cut off the Lever and Lever Guard. Now if you’re the live-life-dangerous type just Dremel the dang thing off and be done with it. But….If we can find the obsessive-compulsive with-in, we’ll need get a little more complicated and partially disassemble the lens and do it “Right”. Or At least what I would consider “right”. Partially disassembling will allow cutting off the parts needed with little risk to the lens.

Start By removing the 5 screws holding the rear mount inplace. Lift up and set aside.

Start by moving the Aperture ring to f22 (this will help later) then remove the 5 screws holding the rear mount in-place. Once the screws are removed just lift up on the rear mount and set aside.

Now before you remove the Aperture rind make sure you're on 22 and slowly but firmly pull back. You don't want to do this quick because a small ball baring is just under the 22 position. Don't lose this!

Now before you remove the Aperture ring make sure you’re on f22 and slowly but firmly pull back. You don’t want to do this quick because a small ball bearing is now just under the f22 position. The bearing is held in-place by only a small indention and the Aperture ring itself. Don’t lose this! When you’re putting the lens back together make sure the bearing is resting in the indention and firmly push the aperture ring back in-place at position f22

Don't lose this!

Don’t lose this!

Finally remove the 3 screws holding the Aperture lever to the lens.

Finally remove the 3 screws holding the Aperture lever to the lens and pull back.

Now the whole reason we took the lens apart was so we could safely cut the Lever off with little risk of damaging the lens.

Now we are free to cut away the lever.

One down, one to go.

One down, one to go.

I chose to use som cutters to slowl cut away the guard and when the guard was cut low enough I used a utility knife to shave the rest down.

I chose to use some cutters and slowly cut away the guard low enough so I could use a utility knife to slowly and carefully shave the rest down.

Pentax mod guard shave

Guard removed.

Guard removed.

After the Guard is removed reassemble the lens and attach the Pentax to EOS adapter. The adapter I'm using has an AF confirmation Chip per-installed but one with out the Chip should work just as well. The Chip doesn't automate anything but will allow the camera to beep when focus is achieved. Provided you have the shutter button halfway down while focusing. Last the adapter itself had to be be cut some but only the lock. If I didnt cut it down the lens would have still worked but was starting to where on the Mirror stop in the 6d so I just trimmed a little off.

After the Guard is removed reassemble the lens and attach the Pentax to EOS adapter. The adapter I’m using has an AF confirmation Chip pre-installed but one without the chip should work just as well. The Chip doesn’t automate anything but will allow the camera to beep when focus is achieved, provided you have the shutter button halfway down while focusing. Last, the adapter lock itself had to be be cut some but only the lock. If I didn’t cut it down the lens would have still worked but was starting to where on the Mirror stop inside the 6D so I just trimmed a little off and problem solved.

All is working well and no issues.

All is working well and no issues.

Downsides to modifying an old Pentax lens like this? Value of the lens is now suspect, as its only valuable to you and other Canon users looking to do the same thing. That said, if you reattach the modified lens to an old Pentax film camera the camera it will still work. You’ll still be able to take pictures like before but the camera will act like its always got a dept of field preview button pressed. This wont effect the pictures but will darken the viewfinder at higher f-stops. This happens now because the lever that was there before you so rudely cut it off allowed the camera to keep the aperture open all the way till the moment the shutter opened. This was to let the maximum amount of light into the viewfinder so you could see what you taking a picture of. Now If you stop the lens down you’re not only limiting the light going to the film but also the viewfinder. Again this wont effect the picture, just what you see though the viewfinder. Incidentally, this is also how it will work on your Canon camera as well.

6/27 Update: I got a chance to try this adapter out on some other Canon SLR’s. I found that the conformation chip on this particular adapter was not compatible with the T4i, T5i and the SL1. Not only was the chip not compatible, it prevented the cameras from working. The chip did not hurt the Cameras, it just put them into an error mode that went away when the chip was removed. As for my 50D and 6D I’ve experienced no errors and the lens and conformation chip work great.

Disney World

teppan edo

Magic Kingdom Fireworks castle

dumbo ride

Epcot night

Gift shop reflection

pirates of the caribbean

Disney monorail

Epcot Fireworks show

Epcot Fireworks

Magic Kingdom Fireworks