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Ikelite Canon 100D / Rebel SL1 : review ?

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Oh, sorry I misspelled length and wrote lens instead !

 

I understand you shot both tokina 10-17mm and canon 10-18mm

at 10mm. Like Phil wrote, I am wondering what it looks like at 17 and

18mm with the same setup.

 

 

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I have a question for the group participants.

 

If there was a dome available for this housing that did not vignette with the Tokina 10-17 and the Canon 10-18 that provided sharper corners, provided a wider angle of view than the standard dome but did not have a zoom control would you be interested in purchasing it? Is zoom really that important for the extreme wide angle of these two lenses?

 

I appreciate your comments.

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I do not own this housing, but the vignetting with the 10-17 is definitely a limitation.

If I were to buy the housing, I would like to have such a port.

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After some research I have determined that it is not economically feasible to incorporate a zoom control and place the dome in the proper position as the nodal point dictates. There is just not enough room between the housing and the back of the dome.

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I have a question for the group participants.

 

If there was a dome available for this housing that did not vignette with the Tokina 10-17 and the Canon 10-18 that provided sharper corners, provided a wider angle of view than the standard dome but did not have a zoom control would you be interested in purchasing it? Is zoom really that important for the extreme wide angle of these two lenses?

 

I appreciate your comments.

 

I would be interested. Do I NEED it? No....would I buy it? Most definitely. Once I had the $$$, of course ;)

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Amigos,

 

My opinion on WA lens choices is this:

 

* If you absolutely NEED or WANT the full 10mm of the popular Tokina 10-17mm lens then Bill's dome is tops...........Preset the lens at 10mm and go for it......But zooming the Tokina in to about 11-12mm in the standard Ikelite dome isn't bad either....

 

* The popular Sigma 15mm Fisheye on a cropped sensor SLR like the Canon Rebel SL1 / 100D is still very nice too........A friend will be shooting his Sigma 15mm in the Philippines on his Canon SL1 early September.

 

* The Canon 8-15mm F4L lens is super spectacular and can be used in the Ikelite dome preset at one focal length......I shot it at 12mm in the Ikelite dome and was very happy with the results. Bill may make a "tuned" version of his dome for this lens too.

 

* Finally, the inexpensive Canon 10-18mm IS STM rectilinear lens will be a great choice for Canon Rebel SL1 / 100D shooters..........It's a great surface lens and while not as wide as the fisheye choices will work well for land and UW shooters wanting to own one WA lens.....

 

Sample pics below from some of the fisheye choices.........First 4 pics Tokina 10mm in Bill's dome, then Sigma 15mm Fisheye (1 shot) and then a Canon 8-15mm Fisheye at 12mm (1 shot).

 

Also some more photos at this link. Same group of WA lenses and even some Canon 18-55mm IS STM "kit" lens shots.......A darn capable little camera....

 

http://www.ikelite.com/support/galleries/canon-100d-david-haas.html

 

dhaas

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Edited by dhaas
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I've pushed about 1000 images through the SL-1 in the Ikelite housing now and prefer it to my Canon 40D and 50D.. the camera does everything my old ones do, but better.. the screen on back for settings is wonderful, and it carries way better than my other systems do. The vignetting on the Tokina 10-17mm is unfortunate, but not a deal killer for me.. (I guess my composition isn't so tight that a little crop is OK :-). What I'm seeing is the throat of the port- not the shade, so I'm not sure how it can be solved, but I'm all ears. My main concern was pressing two buttons to change aperture -but it is not a problem even for small hands because the housing is so tiny. My last trip I took both systems and never used anything but the SL-1.. for me personally, the electronic TTL is a key feature though.. I know a lot of you like manual strobe settings but I will never shoot manual again. The SL-1 battery hasn't been a problem, but it can't last as long, so I would not want the onboard flash going off every time (e.g. fiber optic)

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file:///Users/steve/Desktop/sl-1%20images/IMG_8649-2.jpg

file:///Users/steve/Desktop/sl-1%20images/IMG_8649.jpg


this is the vignette with the Tokina 10-17mm set at 10mm, and focused a few inches from the dome.. TTL with a DS-161

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Below are two pictures taken with the ikelite housing and the Tokina 10-17 lens set at 10mm. The first picture is taken with the ikelite dome and the second one is taken prototype precision dome. Both pictures were taken from the same location, withe the camera mounted on a tripod with 18" between the front of the dome and the same subject. I have full size images but I loaded these into the editor and re-sized them only. I hope to be able to get some pictures with both domes at 12mm soon.


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If that dome becomes available at a decent price point I would certainly be interested.

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Below are two pictures taken with the ikelite housing and the Tokina 10-17 lens set at 10mm. The first picture is taken with the ikelite dome and the second one is taken prototype precision dome. Both pictures were taken from the same location, withe the camera mounted on a tripod with 18" between the front of the dome and the same subject. I have full size images but I loaded these into the editor and re-sized them only. I hope to be able to get some pictures with both domes at 12mm soon.

 

How would the coverage compare if the test photos were taken underwater? Would it change much from a surface test?

 

John MCracken

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Posted Today, 06:15 PM

blibecap, on 14 Jul 2014 - 1:07 PM, said:snapback.png

 

Below are two pictures taken with the ikelite housing and the Tokina 10-17 lens set at 10mm. The first picture is taken with the ikelite dome and the second one is taken prototype precision dome. Both pictures were taken from the same location, withe the camera mounted on a tripod with 18" between the front of the dome and the same subject. I have full size images but I loaded these into the editor and re-sized them only. I hope to be able to get some pictures with both domes at 12mm soon.

 

 

How would the coverage compare if the test photos were taken underwater? Would it change much from a surface test?

 

John MCracken

 

The pictures were taken underwater. The domes would not effect the picture in the air except for the vignetting. If you will notice the ikelite has a smaller field of view than the prototype dome. You can tell this by the distance between the white Velcro strips on the background as well as the apparent size of the background.

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If you conserved the sensor plane distance to target rather than distance from front of dome would you get the same difference in coverage? If so you may have made a breakthrough. Many of us use wide ports rather than hemispheres with fisheye lenses and may have been getting more subject magnification without knowing it.

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Bill, thank you for showing us your prototype results. It looks good !

 

Steve, your crabe picture is really good. I think this example is very well

suited for a quick "content aware filler" processing in photoshop for the

corners.

 

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post-47362-0-64435800-1405356485.jpg

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If you conserved the sensor plane distance to target rather than distance from front of dome would you get the same difference in coverage? If so you may have made a breakthrough. Many of us use wide ports rather than hemispheres with fisheye lenses and may have been getting more subject magnification without knowing it.

 

The distance from the sensor to the subject did not change as the housing was mounted on a tripod with a quick disconnect. The tripod was never removed from the pool and did not move during the session so the distance from the sensor to the subject remained constant. The subject / target was suspended in front of the tripod. The reference distance from the front of the dome to the subject of 18" is just a reference distance.

 

If you research the subject you will find that it is known that a full hemispherical dome will provide a wider coverage than a smaller section of a larger dome. Yes if you have a wide angle lens fish-eye or rectilinear and you are not using a full hemispherical dome you are not getting the maximum view.

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The distance from the sensor to the subject did not change as the housing was mounted on a tripod with a quick disconnect. The tripod was never removed from the pool and did not move during the session so the distance from the sensor to the subject remained constant. The subject / target was suspended in front of the tripod. The reference distance from the front of the dome to the subject of 18" is just a reference distance.

 

If you research the subject you will find that it is known that a full hemispherical dome will provide a wider coverage than a smaller section of a larger dome. Yes if you have a wide angle lens fish-eye or rectilinear and you are not using a full hemispherical dome you are not getting the maximum view.

Thanks! One learns something new every day! I recall a thread from a few years back where it was shown (here on WP) that diopters reduced angle of view but not without them, which I assume is the case here since you were using a FE lens.

 

I found the thread I was thinking of:

http://wetpixel.com/forums/index.php?showtopic=28444&page=5

See post 98 for example. This led to quite a bit of discussion in the thread.

Edited by Tom_Kline

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Any new experiences with this setup anyone wants to add?

 

Very interested in more info about the dome or modifications to avoid the vignetting using the Tokina 10-17mm in post #61. blibecap; how much for the custom dome?

Edited by Raptor^

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Just thought I'd share some surprising test shots taken with the Tamron 60mm F/2 Macro inside the dome port.

http://blog.housingcamera.com/product-reviews/shooting-macro-dome-port

I was glad to see how well it functioned and allowed a lot of possibilities for shooting, ranging from medium shots to very close macro shots.

Taken with the SL1 in an Ikelite housings, with a YS-D1 connected via sync cord and S2000 triggered optically from the YS-D1.

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Just thought I'd share some surprising test shots taken with the Tamron 60mm F/2 Macro inside the dome port.

http://blog.housingcamera.com/product-reviews/shooting-macro-dome-port

I was glad to see how well it functioned and allowed a lot of possibilities for shooting, ranging from medium shots to very close macro shots.

Taken with the SL1 in an Ikelite housings, with a YS-D1 connected via sync cord and S2000 triggered optically from the YS-D1.

 

 

Just curious.

The images you posted seem a bit soft. Is that a characteristic of the camera? I am considering this camera for travel as I am tired of lugging my full sized DSLR around the world. But I want to know that crisp and sharp photos are possible with this camera. I am very uneducated with this technology, as of now.

 

And, I am interested in when a dome will be available for the 10-17 without vignetting,as it is one of my favorite lenses.

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And, I am interested in when a dome will be available for the 10-17 without vignetting,as it is one of my favorite lenses.

 

Bill Libecap already has such a dome. It's the precision 5" dome, available directly from him at uwcamerastuff.com or also available from bluewaterphotostore.com

 

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Maybe someone who has seen/handled this housing can answer this for me. Given the technical capability, would it be possible to make an adapter to fit a standard or modular dome port to this housing ?

This camera/housing seems to tick most of the boxes for me (especially with a mini-dome) except that I have a couple of over/under and snells window shots I'd like to try and get if the situation arises. It seems a bit silly to have both this and my existing 40D setup just in case. Any thoughts ?

 

Steve.

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The part you are looking for is in the pictures below. I made a prototype to use the modular port system on the housing. You have to unscrew the current port to put this one in then you can use the modular port system. The big problem is you do not have zoom or focus controls.

 

Although it could be done I don't see the reason to make the standard ikelite port system work on this housing.

 

 

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Edited by blibecap

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That's interesting. Is that something you sell and/or is it part of your mini-dome setup for this housing ?

Hmmm. If I sell this and that and those and ......

 

Steve.

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Hi Steve

Sorry for the delayed reply, I have had some personal problems here that have keep me to busy. The SL1 to ikelite modular port adapter is something custom that I made up. If you are interested in one drop me a message and I can make one up for you.

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