Computational Photography
Derek Smith • 23 June 2020

Computational Photography
How much do we allow our cameras to use computational technology to aid our lives?
We already take automatic exposure control for granted, and usually the camera makes a fairly good job of it. Automatic focus, again the camera usually makes a good guess, but sometimes we have to step in and point the camera focus point to the subject.
What about face, and eye detection? Most modern cameras have this now, and it’s something that a lot of photographers have come to rely on.
HDR – High Dynamic Range, again computational, usually a series of photos combined in camera (or sometimes a bracketed set of images to post process) to obtain the best from a scene with high contrast, dark shadows, and bright skies, or colours.
Focus Stacking – Ideal for macro photography, again some cameras will take a series of photos at varying focus points and allow the photographer to post process these in photo editing software. Some cameras will focus stack “in camera”, producing a final jpeg image without any intervention from the photographer other than arranging the scene, lighting the scene, and pressing the shutter.
Time lapse photography, again some cameras have this feature, and it can be of real benefit to some photographers.
Star trails – My camera has a “Live Composite” mode, I can set the camera on a tripod, select the settings for the scene, press the shutter, walk away and make myself a cup of tea while the camera does the job. The photo above was taken using this feature, the camera takes a series of images, only recording changes in the amount of light at each exposure.
Many smart phones have a lot of computational technology built-in, portrait modes with blurred backgrounds, night-time exposure, automatic flash, and HDR.
So, how far do we as photographers want our cameras to evolve? Purists may say that manual focusing, and manual exposure produce the best images, and want nothing to do with computers in our cameras. Is computational technology the way forward for camera manufacturers, and the general public who want to take quality photographs but don’t necessarily want to learn what an f-stop is?
Point, and shoot cameras are dead, ousted by the advent of a camera on a mobile phone, can modern day mirrorless cameras with sophisticated computational technology compete?
How much do we allow our cameras to use computational technology to aid our lives?
We already take automatic exposure control for granted, and usually the camera makes a fairly good job of it. Automatic focus, again the camera usually makes a good guess, but sometimes we have to step in and point the camera focus point to the subject.
What about face, and eye detection? Most modern cameras have this now, and it’s something that a lot of photographers have come to rely on.
HDR – High Dynamic Range, again computational, usually a series of photos combined in camera (or sometimes a bracketed set of images to post process) to obtain the best from a scene with high contrast, dark shadows, and bright skies, or colours.
Focus Stacking – Ideal for macro photography, again some cameras will take a series of photos at varying focus points and allow the photographer to post process these in photo editing software. Some cameras will focus stack “in camera”, producing a final jpeg image without any intervention from the photographer other than arranging the scene, lighting the scene, and pressing the shutter.
Time lapse photography, again some cameras have this feature, and it can be of real benefit to some photographers.
Star trails – My camera has a “Live Composite” mode, I can set the camera on a tripod, select the settings for the scene, press the shutter, walk away and make myself a cup of tea while the camera does the job. The photo above was taken using this feature, the camera takes a series of images, only recording changes in the amount of light at each exposure.
Many smart phones have a lot of computational technology built-in, portrait modes with blurred backgrounds, night-time exposure, automatic flash, and HDR.
So, how far do we as photographers want our cameras to evolve? Purists may say that manual focusing, and manual exposure produce the best images, and want nothing to do with computers in our cameras. Is computational technology the way forward for camera manufacturers, and the general public who want to take quality photographs but don’t necessarily want to learn what an f-stop is?
Point, and shoot cameras are dead, ousted by the advent of a camera on a mobile phone, can modern day mirrorless cameras with sophisticated computational technology compete?
Louth Photographic Society

At our meeting last night one of our members, Harry Kerman gave a talk on one of his favourite genres, flower photography. Harry's talk was accompanied by a slick, professional standard power point presentation, he also had his camera a Canon R6 II, a Sigma 105mm macro lens, a Lens Baby 56mm manual focus lens, and the standard 24-70mm zoom. Harry demonstrated his use of the equipment, which included backgrounds, a plamp to hold flowers in place, and a light box. After the break Harry presented some of his images, projected onto the screen, not all the images were "perfect" he wanted to show some of his mistakes so that we could learn from them, he also welcomed feedback from members, all of the flower images he showed were stunning, and you can see some of them on this post. It was an inspiring evening, providing many techniques, and creative ideas for members to emulate. Harry's passion for flower photography shone through during the whole talk, his clear narration, power point presentation, demonstrations, and images completed a very successful night. Thank you Harry for a fascinating evening, and to Richard Hildred for the refreshments during the break.

Good morning, All Last week at the club we held a retro night, with four members showing pre year 2000 transparencies. It turned out to be a really interesting evening, I didn't know Richard Hildred had started out at an early age photographing trains, it turned out himself and member Chris Birchmore were travelling on the Flying Scotsman in 1967 at the same time. There is a full report on the evening on our blog. This week, Wednesday 29th October, Harry Kerman, one of our members will be showing some of his projected images, and talking about his interest in flower photography. Don't forget Harry is now taking entries for our PDIOTY (Projected Digital Image Of The Year) competition. (closing date 12th November) Regards Graham

Last night was a nostalgic trip down memory lane, with four of our members presenting a slide show taken before year 2000. Now we all remember sitting in a darkened living room showing your latest holiday slides to friends, and neighbours, that click and whir as the slides changed, the stuck slide, the one that was upside down, or back to front, and uncle Jim dozing on the settee! It wasn't quite like that for last night's presentation, Richard Hildred began the evening with some amazing images of railways from British Rail days, we might ride one of the preserved heritage lines, and see the gleaming clean steam engines pulling a line of carriages, Richard's images returned us to the reality of steam powered passenger and freight operations, with the dirt, the grit, and grime of daily steam running, this image captures the essence of steam hauled mixed goods traffic, Richard's slide was in colour, but renders better here in monochrome. Next up was Tony Gaskins, many of his slides featured his first trip to the Maasai Mara game reserve, and the Ngorongoro Crater, Tony also showed slides from his trip to Canada, his slides and narration made for a great presentation. This image of a mother elephant, and calf was taken in the Ngorongoro Crater. After the break, Chris Birchmore presented many images from the Lincolnshire area, some of the disused, and crumbling buildings in the images made interesting subjects for photography, I have used this image of Bolingbroke castle, and from this viewpoint the church is clearly visible in this image, compared with today where only the church tower is visible. Graham Harrison was our last presenter, last but not least, the variety of images shown was remarkable, several from Wales, and quite a few that had been entered into club competitions previously, and were of high quality, as this image of a Flamingo shows. It was a fascinating, and interesting evening, thanks to each of our presenters, and to Dave Mann for the refreshments.

Good Afternoon, All, Last week at the club we held our monthly print competition, with the categories of "Mono" and "Open", judged by Diane Seddon. It was a very good evening with Diane critiquing our prints with helpful comments on how we could improve our images as well as praise. The results are on our website but well done to David Whitehouse for best print in the mono and Dave Turner for best print in the open. This week, Wednesday 22nd October, we go back in time to before the millennium with transparency slides to be shown by Tony Gaskins, Chris Birchmore, Richard Hildred and myself. You can start sending Harry your entries for the PDI of the year, all the rules etc are on our website, but the important thing is you can enter any PDI's as long as they have never been in a PDI of the year before. There are six subjects and an overall max of six PDI's, no more than three per subject. Regards Graham

A print competition was held last night with the categories of; "Monochrome" and "Open". Diane Seddon from Cleethorpes Camera Club was the judge for the evening, Diane is very skilled, and thorough in her judging, providing useful insight, and critique of the prints. Many of her comments centered around the best cropping of an image to optimise the subject within the frame, and giving the subject "room to breathe" in the framing. Congratulations to David Whitehouse placed first in the "Monochrome" category, with his superb rendering of a face sculpture, and Dave Turner placed first in the "Open" category with his stunning print of the sunrise over Whitby Harbour. Thanks to Diane Seddon for a great evening, and as she remarked at the end of the competition all the prints were of an extremely high standard. The Competition Page has been updated with the highest placed images, but currently the score sheets for the competition are unavailable.

Good Morning All Last week Dave Bennett came to the club again, it has been a while since we have seen his photography but well worth the wait. Dave's photographs were excellent and his story telling along with AV's made it a very good night. This week, Wednesday 15th October, we are holding a print competition, with the categories of "Mono" and "Open", our judge for the evening will be Diane Seddon AFIAP CPAGB BPE3* she is well qualified to judge our prints. The following week we are going to try a retro night again, with Transparencies taken prior to the year 2000, please let me know if you want to take part and have a time slot allotted, time will depend on the numbers wanting to take part. Regards Graham

Last night Dave Bennett came to the club to show us AV's and narrate other sets of photographs on a theme. Dave started with photos along the Humber and then carried on the evening with AV's on nature, flowers and transport as well as talks and photographs showing us Grimsby docks including detailed photographs of fish smoking and engineering. Dave's photography is of a very high standard with strong colours, lot's of use of depth of field and they tell a story. A great night, thank you Dave.

Good Morning All Last week at the club we held a local PDI competition with a category of "5 Minutes From Your Home", we had some very good entries in each category with myself, and Dave Turner judging on the night. All the results are on our website, but well done to Derek for his mobile phone picture of a remembrance seat in Horncastle and Harry for his hellebores in the "Open" category. This week, Wednesday 8th October, Dave Bennett is coming to the club to show us what he has been taking lately, Dave does quite a bit of AV so as usual it will be a very good night. A reminder, send your print titles for the next print competition to Dave Turner by midnight Wednesday and bring your prints in this Wednesday night as well please. If you have any more N&EMPF Exhibition PDI entries send them to me by midnight tomorrow (Monday) please. Regards Graham

Our PDI "Local" competition was held last night, with the categories of "5 Minutes From Your Home", and "Open". Dave Turner, one of our members began the evening with judging the "Open" category, always a difficult category in my opinion because of the variety of subjects entered into the competition. Dave had previewed the images on his home computer, and had notes on each of the images, he provided excellent feedback on each image. After the break, Graham Harrison began judging the "5 Minutes From Your Home" category, this was a very unusual subject category which stretched the creative ingenuity of members, and it was particularly interesting to see what members had submitted. Graham judged the entries very fairly, and provided very good critique of the images. The standard of images submitted was high, which makes judging a competition such as this difficult, and as always is subjective, but a big thank you to both judges, it was an interesting evening. The first placed images, from each category are shown on this post, "At the Going Down of the Sun" by Derek Smith, "5 minutes from your home", and "Hellebores" by Harry Kerman in the "Open" category. The website Competition Page has been updated with the top three placed images, and the scoresheets.

Good Morning All Last week at the club member Tony Gaskins gave us an excellent presentation of his recent trip to Kenya on safari. Tony showed us the animals and birds he had encountered on his trip. It was an evening of excellent wildlife photography as well as a very informative talk, thank you Tony. There is also a report on our website blog. This week, Wednesday 1st October, we are holding a local PDI competition, with the subject categories of "5 Minutes From Your Home" and "Open", Dave Turner has kindly offered to judge the Open with myself the subject, and you have until midnight tonight to enter. Dave Turner is also asking members to send him the titles of their prints for the next print competition, the categories for this are "Mono" and "Open". Regards Graham
