Showing posts with label photography. Show all posts
Showing posts with label photography. Show all posts

Wednesday 24 February 2010

New Lens

I've saved writing about the new lens I was given at Christmas until I've had a decent chance to use it.  I've wanted this for quite a while now, inspired by my friend Mim and her wonderful portrait photography <shameless plug>you can hire her by the way</shameless plug>.  I'm deliberately not showing off any of my pictures in this post until I've got a little better at using it.

My only other two lenses don't have a massive maximum aperture so it's great to finally have a fast lens in my arsenal.  The benefit of greater lens speed is to widen the aperture which allows for throwing the background of your subject out of focus.  This has the benefit of making the subject stand out and drawing the eye towards it.  It's particularly great for portrait work.

The other great plus to this particular lens is it's just about the smallest, cheapest, lightest lens Canon make.  This thing is tiny, weighs something like 130 grams and is less than 80 quid!  It's just about the best bang-for-your-buck you can get in my opinion.

Usage is obviously quite simple as it's fixed focal length so there's no zoom ring to worry about.  You only get a focusing ring and an auto/manual focus switch, no image stabilisation switch to worry about either.  It does feel very strange to use at the moment though, because of it's size and weight it gives the camera a completely different feel.  Not to mention that I'm used to zoom lenses so there's nothing to twist unless you're manually focusing.  You have to move yourself in order to frame the subject as you want and while none of these things are bad, it does give a different feel to the experience of taking pictures.  The results, though, speak for themselves, you can produce really great images from this lens which is a real shocker given the price.

Saturday 13 February 2010

High Dynamic Range (HDR)

Recently I've been playing around with creating HDR style images. I'll save the full technical explanation for someone else.  In my own simple words for the uninitiated, it's a post processing technique where you combine multiple images of the same scene taken at different exposures. The reason for doing this is that your camera is only capable of "seeing" a certain range of light and colours, you usually tell it which range to use i.e. whether you want an underexposed or overexposed image. Some scenes are too mixed in terms of different light levels, you could expose for the dark areas or the light but perhaps not both. This is where a technique such as HDR comes in handy, allowing you to retain the detail in the shady areas as well as the well lit areas for example.

HDR images can look like they're not photographs, perhaps computer generated, depending on the algorithm used to render the final image.  However, in the right hands they can look pretty cool, for example this one from the Flickr HDR Group:

I'm still very much learning, I've been working with these three images:

My best attempt so far is:

I think I've still got some way to go, but it's been fun trying and learning.

Wednesday 30 December 2009

Macro Extension Tubes

For Christmas I asked for (and was lucky enough to receive) a set of extension tubes for my camera. Having no experience with these before, I started off with the cheapest set I could find on Amazon. Whilst they're nowhere near as functional as the more expensive varieties available they are a decent starting point and would make a great present for any enthusiast.

For the uninitiated, Wikipedia has this to say about Extension Tubes:
An extension tube is an accessory for cameras with interchangeable lenses, used primarily for macro photography. The tube contains no optical elements; its sole purpose is to move the lens farther from the image plane. The farther away the lens is, the closer the focus, the greater the magnification.....


I don't mind using a cheap extension tube because it's just a hollow tube and has no effect on the quality of the image produced. The real disadvantage of this set and the reason they're at least £100 less expensive than the next set (and many hundreds of pounds cheaper than the Canon equivalent) is there are no electrical contacts, they're simply plain tubes. This means you're not able to control the aperture of the lens and must use manual focus; manual focus being no biggie since that's advisable with such a small depth of field.

Here are my first test images to see how they perform (click to see larger versions over on Flickr):
Two Pound CoinTwo Pound Coin





Both of these images were taken using my kit lens at 55mm and F5.6 hence the depth of field is so shallow on the magnified image with the tubes attached which also had a lot longer exposure in order to expose the image correctly.

For greater depth of field there are ways, not recommended by Canon I should add, you can change and lock the aperture of the lens before you add the extension tubes. This means if you're really desperate there's nothing stopping you getting a much better depth of field with these tubes at the expense of even longer exposure times of course.

For me, I think I shall experiment with these a little more. Should I catch the macro photography bug then I'll have to make a decision about whether to get a better set of extension tubes or even at some point treat myself to a proper macro lens. For now though, these will suffice quite nicely.

EDIT: My Amazon Review has now been published.

Thursday 26 March 2009

Light Box for Peanuts

PeanutHaha I'm funny, err yes well... I really have built a light box for peanuts inspired a while ago by Nick's tent. Although I have used it to take a peanut (right) it's built out of nothing more than stuff I had in the house already.

Aside from making it for next to nothing, I also wanted to allow it collapse so I don't have to store a huge empty box when it's not in use. Here's how I went about it, you'll be needing:

Light Box
Light Box
Light Box

  • For the box:
    • 1 cardboard box (say about 12"x18" but that can vary depending on your use)
    • 3 sheets of light diffuser (I used greaseproof paper, but tracing paper or white material will do nicely).
    • Velcro (just a short length, say 6")
    • A spine bar (long plastic paper binder thing)
    • Sticky tape

  • Tools:
    • Scissors
    • Craft knife

  • Camera Kit:
    • Camera and subject (D'uh)
    • Tripod
    • 2 or 3 lamps


Now it's time to get all Blue Peter...

Cut the box open at both ends. Seal one end back up again with a few little strips of velcro, leaving the other side open. I stuck packing tape onto the box first as the sticky velcro fixes better to that than cardboard. This will allow the finished box to collapse flat for storage. You should now have a box with a single opening so cut off any of the remaining flaps as you see fit, I just removed the top one and left the other three in place.

Cut three large holes, one on each side and one on the top, leaving a small border of about half an inch or so to fix to. Cut three sheets of your light diffuser about half an inch bigger than the holes in the box. Fix these over each hole with sticky tape.

I fixed a spine bar at the top back of the box. This will grip any sheets of paper/material you wish to use as a background to the photos you take in the box. So far though, as in the pictures above, I've found a simple sheet of white paper on the bottom has worked for the small objects I've taken (such as the peanut above). For best results, don't forget to white balance against your sheet of paper first.

Here's the velcro doing its job:


And the spine bar:

Friday 6 March 2009

Canon EOS 450d Updates

Further to my first post about my new camera and starter kit, I've just added a few more little bits to my starter collection. So here's what else I've got:
Card Reader (my Amazon review)
For years I've been using the older version of the reader I've just bought. They're both cheap as chips at under a fiver in spite of what price Amazon may have them up for now. However, the first worked so well and reliably I bought the new one. The difference? Simply that the new one reads SDHC where the old one didn't and I've just moved both my cameras onto SDHC now.

Blower
Not much to say here. Kept getting dusty/dirty lenses that I didn't want to wipe clean for fear of scratching. A blower appears to be the solution that works.

UV Filter (my Amazon review)
I already had one of these but got fed up of swapping between my two lenses so bought another. Sadly, they'd gone up in price quite a bit!

Remote Control (my Amazon review)
Probably the thing that spurred me on the most to order more stuff because I can't use 2 hands to take pictures right now. Also very useful for some ideas I have about getting close to some wild garden birds I'd like to capture.

This remote is made by a far Eastern company who have simply worked out how to interface to various makes of camera and put together their own set of controls. I would normally stick with Canon or other recognised makes but since this bit of kit has no bearing on the output of the camera I thought it worth a buy. Compared with a genuine Canon remote of the same price (the RC-1) it provides the same functionality but does it using a radio rather than an infra red link. This gives the advantages of using over much longer distances and without line of sight to the IR receiver on the camera. To get this capability from a Canon remote costs hundreds.

I've put more detail in my review on Amazon about this remote. However, in summary I would say you can tell it's cheap but it works well, not missed a click yet. It would probably work more effectively in the hands of a better photographer, but it does work.

Sunday 25 January 2009

Canon EOS 450d


I've recently had the dubious pleasure of turning 30 and having been considering investing in an SLR camera for quite some time decided this was the excuse I needed to splash out a bit. Amazon wish lists come in very handy, I just picked the stuff I wanted and saved to a list so people could just buy from that. My whole family were all very generous and all chipped in to get the following bits and pieces that now make up my starter SLR kit:

This is my first venture into the world of SLR so I'll spare trying to do a full review and leave that to the pros. If you're interested, you can see the specs over at Canon and three pro reviews from sites I would recommend are Camera Labs, DP Review, and Steve's Digicams.

It was never really going to be much of a contest for me as to which brand and camera to go for since I've been using Canon compacts for years. When the 450d came out it immediately caught my attention as a very decent starter SLR and had the much reviewed live view feature that being a regular digital compact user I would expect to see. Now I've been using it for a while though I find I hardly rely on live view at all instead preferring the view finder. For me this actually feels quite retro - how often do you see a compact user with the camera up to their eye? This has a lot to do with the view finder in an SLR being far superior to those on compacts but also the live view is a lot clunkier to use. Using the SLR has made me realise just how fantastic and how much is packed into a decent compact camera like my current Canon A650 IS.

At the moment the starter kit I've got is fairly minimal but does provide the flexibility to take a lot of different shots while I learn how to handle and get the best results from the camera. I'm using the UV filter as a lens protector for the kit lens with the polariser on the long lens mostly. They're not much of a pain to swap, however, I think I'll end up getting a second UV filter for the long lens and swap in the polariser as required. The SD card is great, the Extreme III series have given me no problems in this or other cameras, would certainly recommend. The bags too are great, cheaper and more flexible than the Canon supplied bags and having a larger and smaller bag offers some good flexibility.

I'd welcome comments on other accessories I could get in the future. On my immediate list will be that second UV filter, a lens blower and cleaner, a remote shutter release and a light box (probably to be home made). Longer term I will consider other lenses, speedlights, a tripod upgrade, and possibly a spare battery although battery life is good on the 450d.

You can see my various attempts wit he 450d over on my Flickr pages.

Thursday 20 November 2008

One A Day

I'm taking part in a little Flickr group project at the moment to take and upload one picture a day for a month. The group is called A month in my life... and was the idea of Mirriam, an old school friend I've recently got back in touch with through Flickr.

It's a great idea, I bought a new camera earlier in the year and only really used it in anger when Beth and I were on holiday in New York. Having to take one picture a day is forcing me to get off my back-side and look for interesting things to picture. I'm also finding I'm looking at the world slightly differently, stopping to appreciate and think about light and colour a lot more. If I take a picture of a boring subject I'm thinking about how I can make it more interesting while taking the picture but also with a few trivial editing techniques.

I've been going for 7 days now and so far I think my favourite shot of the ones I've taken is this one:
One a Day

I'd not heard of this one-a-day type idea before, but apparently people on Flickr commit to doing this for a whole year so it looks like I'm getting off lightly with just one month. There's plenty of interesting work going up in the group at the moment, with a lot more people about to start contributing through December. Should be exciting, I'm looking forward to seeing what everyone else comes up with too.