Author Topic: Dealing with constantly-loosening EF-mount adapter  (Read 3195 times)

Nikon1

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Re: Dealing with constantly-loosening EF-mount adapter
« Reply #15 on: August 29, 2021, 03:24:30 AM »
In case you are actually considering getting into Native C-Mount lenses, i went through my List of C-Mount Machine-Vision/ CCTV-Lenses and Searched up some Online Prices/ Places that sell those.  I only listed Lenses for 2/3" to match the Chronos 1.4 Sensor Size Specifically, and according to you initial Post Similar Focal Length to your Zoom Lenses. Listed are Focal Length from 8 to 16mm, sometimes i included shorter ones too.
 Big Advantage of those C-Mount Primes specifically for that Sensor Size is, that you usually can get much Faster and Smaller Lenses than with Canon Mounts. Most of the Lenses Listed below have an Aperture of f/2.8 or way faster.
 .  Most of those Lenses do come with some kind of Resolution Rating, but i personally would try to get something with a Higher Resolution Rating than what i actually need, because some of those Ratings are somewhat Questionable and sometimes more of a Sales Statement than Facts for Some Manufacturers. Note that the actual Wording for Resolution goes something like (rough translation from German by myself) "Minimal Pixel Size at 30% Contrast", which i quoted as "Pixel-Pitch" in this List. So dont just rely on those Resolution Statements and expect them to actually Match 2MP, if they are rated for that. They might in some/ most situations, but dont in others.
 Now, going way overkill with these Lenses Might also dont Make too much sense, as Budget probably also isnt infinite, so i just listed about everything that would make sense on Paper. Watch out for the Compatibility note i put on the End of the Post!
 .
 Let me know if you need something more Specific, or if that List helped you any. Can List Plenty more C-Mount Lenses, that might also make sense, if you ever plan to go with some other 1" Camera or even 4/3" like the 2.1.
 .
 Computar High-Res
 https://www.bhphotovideo.com/c/product/888985-REG/computar_M0814_MP2_2_3_Fixed_Lens.html
https://www.bhphotovideo.com/c/product/888992-REG/computar_M1214_MP2_2_3_Fixed_Lens.html

https://www.bhphotovideo.com/c/product/888996-REG/computar_M1614_MP2_2_3_Fixed_Lens.html

 Those are for 2/3“ and are recommended for a Pixel-Pitch of 4,4µm or less (the 1.4 has 6,6µm; so the lens should technically match the Camera Resolution).

 .

 Computar High-Res 5MP

 https://www.bhphotovideo.com/c/product/1653996-REG/computar_m0828_mpw3_c_mount_2_3_8mm.html

 https://www.bhphotovideo.com/c/product/1305341-REG/computar_m1224_mpw2_2_3_12mm_f2_4_5_0.html

 https://www.bhphotovideo.com/c/product/1626335-REG/computar_m1628_mpw3_c_mount_16mm_machine_vision.html

 These are Rated for 5MP Resolution 2/3” Sensors, recommended for a Pixel-Pitch of 3,4µm or less.

 Basically the Same Lenses like above, but should be Sharper, at the cost of a Smaller Aperture.

 .

 Computar High-Res 5MP for Outdoor use

 https://www.bhphotovideo.com/c/product/1305321-REG/computar_m0918fic_mp_2_3_9mm_f1_8_5_0.html

 https://www.bhphotovideo.com/c/product/1305405-REG/computar_m1218fic_mp_2_3_12mm_f1_8_5_0.html

https://www.bhphotovideo.com/c/product/1305343-REG/computar_m1616fic_mp_2_3_16mm_f1_8_5_0.html

 These are also Rated for 5MP @ 2/3” Sensor Size/ 3,4µm Pixel-Pitch, but are meant for Outdoor CCTV, which means they will provide the Same Sharpness also in IR-Lit Night-time Situations (given your Camera even captures them). Basically the Same Lenses, but corrected for a larger Spectral Range of Light, with a Larger Aperture than the above 5MP (Standard) Lenses. 
 .

 Common Vision Optics/Goyo Optical 2- /3- Megapixel Lenses

https://www.rmaelectronics.com/goyo-optical-gmthr38014mcn/ 

https://www.rmaelectronics.com/goyo-optical-gmxhr38014mcn/ 

https://www.rmaelectronics.com/goyo-optical-gmthr31214mcn/ 

 https://www.rmaelectronics.com/goyo-optical-gmxhr31218mcn/

 https://www.rmaelectronics.com/goyo-optical-gmthr31614mcn/

 https://www.rmaelectronics.com/goyo-optical-gmxhr31614mcn/

 These come in GMTHR- and GMXHR- Variants, but only difference I can find, is that the GMXHR- are rated 3MP according to my List, and the GMTHR- ones are only listed as 2MP Resolution, these are also cheaper by a little. The Website however says, both are 3MP, not sure what is correct here.

 .

 Common Vision Optics/Goyo Optical 5 Megapixel Lenses

 https://www.rmaelectronics.com/goyo-optical-gmb5hr38014mcn/

https://www.rmaelectronics.com/goyo-optical-gma5hr31218mcn/

 https://www.rmaelectronics.com/goyo-optical-gmr5hr31614mcn/

 Rated for 5MP @ 2/3” Sensor Size, so should be sharper than the 2-/3-MP ones above.

 .

 Common Vision Optics/Goyo Optical 12 Megapixel Lenses

https://www.rmaelectronics.com/goyo-optical-gm12hr39014mcn/ 

https://www.rmaelectronics.com/goyo-optical-gm12hr31216mcn/ 

https://www.rmaelectronics.com/goyo-optical-gm12hr312514mcn/ 

https://www.rmaelectronics.com/goyo-optical-gm12hr31814mcn/ 

 Rated for 12MP@ 2/3” Sensor Size, Should be the Sharpest, but not sure if you would even be able to tell much Difference on the Chronos 1.4 Sensor, because of the Low Sensor Resolution. Should however be Stellar Optics, and offer very short Minimum Focus Distance. Plenty of overkill for the 1.4 though.

 .

 Fujinon Lenses

https://www.bhphotovideo.com/c/product/1470037-REG/fujinon_hf9ha_1s_2_3_9mm_1_5_megapixel.html?sts=pi-ps&pim=Y

https://www.bhphotovideo.com/c/product/1470038-REG/fujinon_hf12_5ha_1s_2_3_12_5mm_1_5_megapixel.html

 https://www.bhphotovideo.com/c/product/1470032-REG/fujinon_hf16ha_1s_2_3_16mm_1_5_megapixel.html

 Rated for 1,5MP @ 2/3” Senor Size. Not sure if I would actually recommend buying those, as the Resolution barely matches, but still wanted to put them into this list here, as they also have an inexpensive 6mm Option, if you needed something even wider. (There is plenty of even Lower Resolution Lenses with C-Mounts but these at least match Resolution on Paper… How well they would perform in Reality would have to be tested?).

 .

 Fujinon 5MP Lenses

 https://www.bhphotovideo.com/c/product/404222-REG/Fujinon_HF125SA1_HF12_5SA_1_2_3_12_5mm_F1_4.html?sts=pi&pim=Y

https://www.bhphotovideo.com/c/product/404220-REG/Fujinon_HF16SA1_HF16SA1_2_3_16mm_F1_4.html

 Rated for 5MP @ 2/3” Sensor Size.

 .

 Kowa 2MP Vibration Resistant Lenses

 https://www.bhphotovideo.com/c/product/1648600-REG/kowa_lm8jcm_v_jcm_v_series_c_mount_8mm.html

https://www.bhphotovideo.com/c/product/1627903-REG/kowa_lm12jcm_v_2_3_megapixel_12mm_c_mount.html

https://www.bhphotovideo.com/c/product/1648576-REG/kowa_lm16jcm_v_jcm_v_series_c_mount_16mm.html

 Rated for 2MP  @ 2/3” Sensor Size, Lenses are Fixed Aperture for Less Moving Parts to increase Vibration Resistance.

 .

 Kowa 5MP Lenses

 https://www.bhphotovideo.com/c/product/1648422-REG/kowa_lm8jc3m2_c_mount_8mm_f_1_4_2_3.html

 https://www.bhphotovideo.com/c/product/1648404-REG/kowa_lm12jc5m2_c_mount_12mm_f_1_4_16_2_3.html

 https://www.bhphotovideo.com/c/product/1648573-REG/kowa_lm12jc5mc_c_mount_12mm_f_2_8_16_2_3.html

https://www.bhphotovideo.com/c/product/1648408-REG/kowa_lm16jc5m2_c_mount_16mm_f_1_4_16_2_3.html

 Rated for 5MP @ 2/3“ according to my List and also the Website, but according to Kowa´s naming Scheme the 8mm would only be rated for up to 3MP Resolution, not sure what is going on there. Should still all be well sharp enough for the Chronos 1.4.

 .

 Kowa 10MP Lenses

https://www.bhphotovideo.com/c/product/1648421-REG/kowa_lm8jc10m_c_mount_8mm_f_1_4_22_2_3.html

https://www.bhphotovideo.com/c/product/1058653-REG/kowa_lm12jc10m_c_mount_12mm_f_1_8_11_2_3.html

https://www.bhphotovideo.com/c/product/1058656-REG/kowa_lm16jc10m_c_mount_16mm_f_1_8_16_2_3.html

 Rated for up to 10MP @ 2/3“ Sensor Size.

 .

 Qioptiq MeVis-C

https://www.qioptiq-shop.com/en/Precision-Optics/LINOS-Machine-Vision-Solutions/LINOS-Machine-Vision-Lenses/MeVis-C.html

 12mm and 16mm Lenses are Rated for up to 14,5MP @ 2/3”, the Longer Focal Lengths of this Series are Rated for up to 30,7MP @ 1”.

 Sadly couldn’t find any Shop that would state a Price of those, on Request only, so these are going to cost you some Money.

 These should however be about the Best lenses for that Sensor Format you can get, about on par with decent Cine-Lenses in terms Of Image Quality, from what I heard from a friend that owns a kit of those.

 .

 Ricoh 2MP Standard Lenses with Short 0,1m Minimum Focus Distance

 https://www.baslerweb.com/en/products/vision-components/lenses/ricoh-lens-fl-cc0614a-2m-f1-4-f6mm-2-3/

 https://www.baslerweb.com/en/products/vision-components/lenses/ricoh-lens-fl-cc0814a-2m-f1-4-f8mm-2-3/

https://www.baslerweb.com/en/products/vision-components/lenses/ricoh-lens-fl-cc1214a-2m-f1-4-f12mm-2-3/

https://www.baslerweb.com/en/products/vision-components/lenses/ricoh-lens-fl-cc1614-2m-f1-4-f16mm-2-3/

 Rated for up to 2MP @ 2/3” Sensor Size, so Resolution should match the Chronos 1.4 Sensor.
 These Lenses Also Feature a Short 0,1m Minimum Focus Distance on rather Inexpensive Lenses, which could be useful, if you ever plan on doing any kind of Closeup / Wide-Angle Closeup Work with them. A lot of my Personal C-Mounts have MFD of 0,15 to 0,3m, which is really nice to have, as I rarely feel the Need to even get dedicated Macro Lenses.

 The 16mm one of this Series should also be available as FL-CC1614A-2M, but I couldn’t find it Online. The Version without the –A on the End has an Minimum Focus Distance of 25cm, which is still not too bad.

 These sadly seem to be out of stock everywhere I looked currently, and on-Request-Only Order.

 .

 Ricoh 5MP High-Res Lenses

https://aegoptics.com/product/fl-cc0814-5m-ricoh-lens/

https://aegoptics.com/product/fl-cc1614-5m-ricoh-lens/

 [Attention, these Lenses seem to have a huge Rear Element, that for sure should not fit the C- to CS-Mount Spacer, so you would need some other adapter to mount that one. Or just get an Longer Thread insert made for the Camera, that’s just a Ring with two Threads anyways.]

 Rated for 5MP @ 2/3” Sensor Size, should be Sharper than the 2MP Versions above, but less different Focal Length available. Bigger and heavier also.

 .

 Schneider-Kreuznach High Resolution Compact Prime Lenses

https://www.bhphotovideo.com/c/product/284176-REG/Schneider_21_1001919_21041823_2_3_8mm_F1_4.html/qa

 https://www.bhphotovideo.com/c/product/284177-REG/Schneider_21_1001951_21022892_2_3_12mm_F1_4.html

https://www.stemmer-imaging.com/en/products/series/schneider-kreuznach-23-lenses-3mp/

 These are rated for 3,5µm Minimum Pixel Size, and my List says 3 to 5 MP Maximum Resolution, whatever that means.

 Should be well corrected and Robust Lenses, with an Focus-Locking Mechanism that for sure shouldn’t come Loose.

 Available in Focal length: 4.8 mm, 8 mm, 12 mm, 17 mm, 23 mm, 35 mm

 But I was only able to track down Online Prices for the 8mm and 12mm Versions from a Quick Search.

 B&H lists those as “This item is noncancelable and nonreturnable.” Btw.

 .

 Tamron Standard C-Mount Lenses

https://www.vision-dimension.com/en/lenses/ccs-mount-lenses/monofocal-lenses/8-mm-c-mount-lens-tamron-219hb/554

https://www.vision-dimension.com/en/lenses/ccs-mount-lenses/monofocal-lenses/12-mm-c-mount-lens-tamron-25hb/555

 https://www.vision-dimension.com/en/lenses/ccs-mount-lenses/monofocal-lenses/16-mm-c-mount-lens-tamron-17hf/559

 These are Listed as “up to 1,3MP Resolution at 2/3” Sensor Size” in my List, Website says 1 to 2 MP Resolution, so I doubt that you would be able to get the Full Resolution Potential out of the Chronos 1.4 Sensor with those Lenses, so I would not recommend buying those. Especially, because they cost more new than some of the Other Options, which seem to be much Sharper just from the Mega-Pixel Ratings those are sold at. However, If you are Able to find those used, those are usually pretty cheap, so that might be an option if you don’t want to spend a lot of Money. But don’t expect crazy amazing results, if they even Rate it at 1MP, actual Resolution might be even worse.

https://industrialusa.com/products/tamron-219hb-reconditioned

 Maybe even Cheaper on Ebay and such, haven’t searched there yet, just did a very Quick Search.

 .

 Tamron High Resolution Lenses with Small Minimum Focus Distance

https://www.bhphotovideo.com/c/product/1042323-REG/tamron_m23fm06_c_mount_6mm_f_1_8_22_2_3.html

 https://www.bhphotovideo.com/c/product/1042324-REG/tamron_m23fm08_c_mount_8mm_f_1_8_22_2_3.html

https://www.bhphotovideo.com/c/product/1042325-REG/tamron_m23fm12_c_mount_12mm_f_1_8_22_2_3.html

https://www.bhphotovideo.com/c/product/1042326-REG/tamron_m23fm16_c_mount_16mm_f_1_8_22_2_3.html

 These are rated for a Minimum Pixel Pitch of 2,5µm. My List states a Resolution of 10MP @2/3” Sensor Size, but the Website does only mention a Maximum Resolution of up to 6MP on the Page of the 8mm Lens, so again not too sure what is correct here.
 Tamron also has an even more Expensive Series of C-Mount-Primes, which are Specifically Vibration-Resistant, didn’t list those here.

 .

 .

 An important thing to note is, that some of these Wide Angle-Lenses will not be Compatible with a Standard C-Mount to CS-Mount Spacer (the 5mm Ring that came with the Camera) because they have a Rear Element that Protrudes too far into the Mount. To make sure they fit the C-Mount Spacer Ring, I Recommend To contact the Seller or Manufacturer and ask, before you actually buy any of the 12mm or Shorter Focal Length, everything longer than 12mm should usually be fine (only lenses above 12mm Focal Length I know with Super Huge Rear Elements are Super-Fast C-Mounts like the 25mm 0,85 and such, but there are for sure other ones i dont know about.)
 
« Last Edit: August 29, 2021, 03:57:12 AM by Nikon1 »

Nikon1

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Re: Dealing with constantly-loosening EF-mount adapter
« Reply #16 on: August 29, 2021, 04:48:23 AM »
Also did some more digging online, searching for C-Mount to Canon Mount Adapters without those adjustment Screws, and the only two adapters i was able to find without those are these:
 https://fotodioxpro.com/products/efa-c-p
 https://www.adrianololli.com/articolo.asp?ID=2672
 Both only show a Single Image, that shows the C-Mount side, but if the Images are accurate, those should be a Solid one-Piece Construction. That might leave the Lens in a Weird Rotational Orientation, but will at least avoid the Constant loosening of the (on that Adapters apparently Missing) C-Mount Rotation Adjustment Screws.
 To be sure those are actually one-Piece Designs, might ask for more Images before actually ordering one of those.
 .
 Only other thing i can Recommend, is to think about using something like the Style of Adapters SergeyKashin Posted Images off. He said, he is selling those in an Other Thread, which he later deleted, so not sure, if he is still selling those. In that Same Thread Mostafa from Krontech also announced, that they are working on an official MFT-Mount Adapter/ -Plate just like SergeyKashin showed, but no official Release Date is known yet, from what i am aware. I also Posted a 3D-Printabe Mount of the Same Style in this Thread:
 https://forum.krontech.ca/index.php?topic=615.0
 Sadly, the original exact Macro tubes, for which Metal Mount the 3D-File was made is no longer Available as it seems, so that would maybe need to be modified.
 Otherwise you might just need to wait until Krontech releases their MFT-Mount or get something like the Adapter Plate that Turns the Chronos into an Native Canon Mount (Should be the Most Sturdy Connection, if you insist on using your Canon Mount Lenses).
 .
 Bayonet Style Mounts still will always have some kind of Play usually (some Amount of Lens Sag on very Heavy Lenses is usually noticeable on most adapters/ mounts), so if you absolutely need a Perfectly Straight Focal Plane and an Extremely robust and Reliable connection to the Camera, Screw Mount Lenses are usually the Way to go, which is also kind of the Reason, they even still exist and are still in such heavy use in Industrial Environments.
 As also Stated in my above Post, Native C-Mount lenses are also usually available with much faster Apertures.
 Or just go with native MFT Manual Prime Lenses, once the Mount adapter from Krontech is available, The MFT Mount System has some nice Lenses Too, but for the Chronos 1.4 you probably have more/ better Options with straight up C-Mount Machine Vision Glass.
« Last Edit: August 29, 2021, 04:50:20 AM by Nikon1 »

Nikon1

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Re: Dealing with constantly-loosening EF-mount adapter
« Reply #17 on: August 29, 2021, 11:44:43 AM »
Same problem here, but not solved yet. Anyone have a fix for that?

I have this adapter, btw.
EDIT: Nevermind, looked at the Post from clkdiv here again, and the Images on that amazon Page do show The Same Set screws on that seemingly same adapter i linked from the Fotodiox Page directly, so i guess the image just doesnt show that correctly. Or they do have them on some Versions/ Revisions of that Adapter and not on others, as the Locking Pin "Button" also seems to be different, but otherwise the Images are the Same? Might also be some kind of Photoshop involved here?
 Guess the only one is the Italian one then, but given that apparently EVERY other C-Mount to Canon Mount Adapter has those Set Screws on them, i am really not sure anymore, if that one does have them or not, and would absolutely request detailed Images from the Seller before ordering!
« Last Edit: August 29, 2021, 11:47:45 AM by Nikon1 »