Canon 200d - Samyang Lenses Issue

I’d had a few issues with my Samyang 14mm F/2.8 lens. the “trident-shaped” glare to images (on my Canon 200d). (see image 1) prompted me to contact Samyang.

So, off it went to Samyang’s (Intro 2020) Service HQ UK. After inspection they concluded that there were problems with the lens – but as it was out of warranty, they could replace it with a shiny bright MkII version (complete with focus lock) for a reduced price.

However, after play-testing, images appear to have a curious (different) mis-shape to them (see image 2). I was assured by Intro 2020 that the MkII is a great lens, and I have contacted them, but while i await their reply, is there anything else i can try to be sure. could this be the camera itself? or have i just been unlucky with two lenses?



please note: both of these crops are from centre of the images.

going to try the 18-55mm kit lens tonight to try and eliminate the camera as a potential cause.

 

seems that even stopped down to F/4 there's still something going on.

am wondering if any of the following Canon 200d settings are likely to help, and if so, what should i opt for?

♦ Mirror Lock
♦ Lens Electronic MF
♦ Lens aberration correction ► Peripheral illum / Chromatic aberr / Distortion / Diffraction
♦ White Balance
♦ Colorspace
♦ Auto Lighting Optimizer
♦ Long Exp Noise Reduction
♦ High Speed ISO NR

or anything else "on camera" that may help?

 

I am guessing that the images that you have posted are of stars?

If so, how are you focusing? Is this a manual focus, or an auto focus lens?

Gary

 

yes, they're stars. manual focus. touchscreen zoom to establish focus is crisp.

 

tested the Canon 18-55mm kit lens - it produces nice round solid stars @ F/3.5.

 

Okay. So I would turn off all in camera corrections, and just test the camera and lens combination. I asked about your focusing in case you were just turning the focusing to the infinity mark.

My guess is either you have another subpar lens, or it is just the nature of this lens.

I have come close to buying Samyang lenses before because of the competitive pricing. I see that some people get a good copy, and others seem to have to go through one, two, three, or more copies before they get a good copy. That is what put me off this brand.

I saw your post over on Stargazers lounge as well.

Gary

 

thanks. really good to know.
will await Samyang response. my guess is they'll just exchange it again - without even checking the replacement model.

 

hi Gary

Samyang's UK Service People have come back to me for more info.